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< title > Glances< / title >
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:Author: Alessio Sergi
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< body >
< div class = "document" id = "glances" >
< h1 class = "title" > Glances< / h1 >
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< p > This manual describes < em > Glances< / em > version 2.0.1.< / p >
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< p > Copyright © 2012-2014 Nicolas Hennion < < a class = "reference external" href = "mailto:nicolas@nicolargo.com" > nicolas@ nicolargo.com< / a > > < / p >
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< p > June 2014< / p >
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< div class = "contents topic" id = "table-of-contents" >
< p class = "topic-title first" > Table of Contents< / p >
< ul class = "simple" >
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< li > < a class = "reference internal" href = "#introduction" id = "id5" > Introduction< / a > < / li >
< li > < a class = "reference internal" href = "#usage" id = "id6" > Usage< / a > < ul >
< li > < a class = "reference internal" href = "#standalone-mode" id = "id7" > Standalone Mode< / a > < / li >
< li > < a class = "reference internal" href = "#client-server-mode" id = "id8" > Client/Server Mode< / a > < / li >
< li > < a class = "reference internal" href = "#web-server-mode" id = "id9" > Web Server Mode< / a > < / li >
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< / ul >
< / li >
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< li > < a class = "reference internal" href = "#command-reference" id = "id10" > Command Reference< / a > < ul >
< li > < a class = "reference internal" href = "#command-line-options" id = "id11" > Command-Line Options< / a > < / li >
< li > < a class = "reference internal" href = "#interactive-commands" id = "id12" > Interactive Commands< / a > < / li >
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< / ul >
< / li >
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< li > < a class = "reference internal" href = "#configuration" id = "id13" > Configuration< / a > < / li >
< li > < a class = "reference internal" href = "#anatomy-of-the-application" id = "id14" > Anatomy Of The Application< / a > < ul >
< li > < a class = "reference internal" href = "#legend" id = "id15" > Legend< / a > < / li >
< li > < a class = "reference internal" href = "#header" id = "id16" > Header< / a > < / li >
< li > < a class = "reference internal" href = "#cpu" id = "id17" > CPU< / a > < / li >
< li > < a class = "reference internal" href = "#load" id = "id18" > Load< / a > < / li >
< li > < a class = "reference internal" href = "#memory" id = "id19" > Memory< / a > < / li >
< li > < a class = "reference internal" href = "#network" id = "id20" > Network< / a > < / li >
< li > < a class = "reference internal" href = "#disk-i-o" id = "id21" > Disk I/O< / a > < / li >
< li > < a class = "reference internal" href = "#file-system" id = "id22" > File System< / a > < / li >
< li > < a class = "reference internal" href = "#sensors" id = "id23" > Sensors< / a > < / li >
< li > < a class = "reference internal" href = "#processes-list" id = "id24" > Processes List< / a > < / li >
< li > < a class = "reference internal" href = "#monitored-processes-list" id = "id25" > Monitored Processes List< / a > < / li >
< li > < a class = "reference internal" href = "#logs" id = "id26" > Logs< / a > < / li >
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< / ul >
< / li >
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< li > < a class = "reference internal" href = "#other-outputs" id = "id27" > Other Outputs< / a > < / li >
< li > < a class = "reference internal" href = "#api-documentation" id = "id28" > API Documentation< / a > < / li >
< li > < a class = "reference internal" href = "#support" id = "id29" > Support< / a > < / li >
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< / ul >
< / div >
< div class = "section" id = "introduction" >
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< h1 > < a class = "toc-backref" href = "#id5" > Introduction< / a > < / h1 >
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< p > Glances is a cross-platform curses-based system monitoring tool which
aims to present a maximum of information in a minimum of space, ideally
to fit in a classical 80x24 terminal or higher to have additional
information. It can adapt dynamically the displayed information depending
on the terminal size.< / p >
< p > Glances can also work in client/server mode. Remote monitoring could be
done via terminal or web interface.< / p >
< p > Glances is written in Python and uses the < a class = "reference external" href = "https://code.google.com/p/psutil/" > psutil< / a > library to get
information from your system.< / p >
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< p > Console (80x24)< / p >
< img alt = "images/screenshot.png" src = "images/screenshot.png" / >
< p > Full view (> 80x24)< / p >
< img alt = "images/screenshot-wide.png" src = "images/screenshot-wide.png" / >
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< p > Web interface (Firefox)< / p >
< img alt = "images/screenshot-web.png" src = "images/screenshot-web.png" / >
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< / div >
< div class = "section" id = "usage" >
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< h1 > < a class = "toc-backref" href = "#id6" > Usage< / a > < / h1 >
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< div class = "section" id = "standalone-mode" >
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< h2 > < a class = "toc-backref" href = "#id7" > Standalone Mode< / a > < / h2 >
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< p > Simply run:< / p >
< pre class = "code console literal-block" >
< span class = "generic prompt" > $< / span > glances
< / pre >
< / div >
< div class = "section" id = "client-server-mode" >
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< h2 > < a class = "toc-backref" href = "#id8" > Client/Server Mode< / a > < / h2 >
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< p > If you want to remotely monitor a machine, called < tt class = "docutils literal" > server< / tt > , from
another one, called < tt class = "docutils literal" > client< / tt > , just run on the server:< / p >
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< pre class = "code console literal-block" >
< span class = "generic output" > server$ glances -s< / span >
< / pre >
< p > and on the client:< / p >
< pre class = "code console literal-block" >
< span class = "generic output" > client$ glances -c @ server< / span >
< / pre >
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< p > where < tt class = "docutils literal" > @ server< / tt > is the IP address or hostname of the server.< / p >
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< p > In server mode, you can set the bind address < tt class = "docutils literal" > < span class = "pre" > -B< / span > ADDRESS< / tt > and listening
TCP port < tt class = "docutils literal" > < span class = "pre" > -p< / span > PORT< / tt > .< / p >
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< p > In client mode, you can set the TCP port of the server < tt class = "docutils literal" > < span class = "pre" > -p< / span > PORT< / tt > .< / p >
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< p > You can also set a password to access to the server < tt class = "docutils literal" > < span class = "pre" > --password< / span > < / tt > .< / p >
< p > Default binding address is < tt class = "docutils literal" > 0.0.0.0< / tt > (Glances will listen on all the
network interfaces) and TCP port is < tt class = "docutils literal" > 61209< / tt > .< / p >
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< p > In client/server mode, limits are set by the server side.< / p >
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< p > Glances is < tt class = "docutils literal" > IPv6< / tt > compatible. Just use the < tt class = "docutils literal" > < span class = "pre" > -B< / span > ::< / tt > option to bind to
all IPv6 addresses.< / p >
< p > As an experimental feature, if Glances server is not detected by the
client, the latter will try to grab stats using the < tt class = "docutils literal" > SNMP< / tt > protocol:< / p >
< pre class = "code console literal-block" >
< span class = "generic output" > client$ glances -c @ snmpserver< / span >
< / pre >
< p > Known issues: grab using SNMP is only validated for GNU/Linux with SNMP
v2/2c server.< / p >
< / div >
< div class = "section" id = "web-server-mode" >
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< h2 > < a class = "toc-backref" href = "#id9" > Web Server Mode< / a > < / h2 >
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< p > If you want to remotely monitor a machine, called < tt class = "docutils literal" > server< / tt > , from any
device with a web browser, called < tt class = "docutils literal" > client< / tt > , just run on the server:< / p >
< pre class = "code console literal-block" >
< span class = "generic output" > server$ glances -w< / span >
< / pre >
< p > and on the client enter the following URL in your favorite web browser:< / p >
< pre class = "literal-block" >
http://@ server:61208
< / pre >
< p > where < tt class = "docutils literal" > @ server< / tt > is the IP address or hostname of the server.< / p >
< p > The Glances web interface follows responsive web design principles.< / p >
< p > Screenshot from Chrome on Android< / p >
< img alt = "images/screenshot-web2.png" src = "images/screenshot-web2.png" / >
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< / div >
< / div >
< div class = "section" id = "command-reference" >
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< h1 > < a class = "toc-backref" href = "#id10" > Command Reference< / a > < / h1 >
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< div class = "section" id = "command-line-options" >
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< h2 > < a class = "toc-backref" href = "#id11" > Command-Line Options< / a > < / h2 >
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< table class = "docutils option-list" frame = "void" rules = "none" >
< col class = "option" / >
< col class = "description" / >
< tbody valign = "top" >
< tr > < td class = "option-group" >
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< kbd > < span class = "option" > -h< / span > , < span class = "option" > --help< / span > < / kbd > < / td >
< td > show this help message and exit< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > -V< / span > , < span class = "option" > --version< / span > < / kbd > < / td >
< td > show program's version number and exit< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > -b< / span > , < span class = "option" > --byte< / span > < / kbd > < / td >
< td > display network rate in byte per second< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > -B < var > BIND_ADDRESS< / var > < / span > , < span class = "option" > --bind < var > BIND_ADDRESS< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > bind server to the given IPv4/IPv6 address or hostname< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > -c < var > CLIENT< / var > < / span > , < span class = "option" > --client < var > CLIENT< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > connect to a Glances server by IPv4/IPv6 address or
hostname< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > -C < var > CONF_FILE< / var > < / span > , < span class = "option" > --config < var > CONF_FILE< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > path to the configuration file< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > --disable-bold< / span > < / kbd > < / td >
< td > disable bold mode in the terminal< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --disable-diskio< / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > disable disk I/O module< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > --disable-fs< / span > < / kbd > < / td >
< td > disable file system module< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --disable-network< / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > disable network module< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --disable-sensors< / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > disable sensors module< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --disable-process< / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > disable process module< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > --disable-log< / span > < / kbd > < / td >
< td > disable log module< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --output-csv < var > OUTPUT_CSV< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > export stats to a CSV file< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > -p < var > PORT< / var > < / span > , < span class = "option" > --port < var > PORT< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > define the client/server TCP port [default: 61209]< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > --password< / span > < / kbd > < / td >
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< td > define a client/server password from the prompt or
file< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > -s< / span > , < span class = "option" > --server< / span > < / kbd > < / td >
< td > run Glances in server mode< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --snmp-community < var > SNMP_COMMUNITY< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > SNMP community< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --snmp-port < var > SNMP_PORT< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > SNMP port< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --snmp-version < var > SNMP_VERSION< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > SNMP version (1, 2c or 3)< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --snmp-user < var > SNMP_USER< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > SNMP username (only for SNMPv3)< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > --snmp-auth < var > SNMP_AUTH< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > SNMP authentication key (only for SNMPv3)< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > -t < var > TIME< / var > < / span > , < span class = "option" > --time < var > TIME< / var > < / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > set refresh time in seconds [default: 3 sec]< / td > < / tr >
< tr > < td class = "option-group" colspan = "2" >
< kbd > < span class = "option" > -w< / span > , < span class = "option" > --webserver< / span > < / kbd > < / td >
< / tr >
< tr > < td > < / td > < td > run Glances in Web server mode< / td > < / tr >
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< tr > < td class = "option-group" >
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< kbd > < span class = "option" > -1< / span > , < span class = "option" > --percpu< / span > < / kbd > < / td >
< td > start Glances in per CPU mode< / td > < / tr >
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< / tbody >
< / table >
< / div >
< div class = "section" id = "interactive-commands" >
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< h2 > < a class = "toc-backref" href = "#id12" > Interactive Commands< / a > < / h2 >
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< p > The following commands (key pressed) are supported while in Glances:< / p >
< dl class = "docutils" >
< dt > < tt class = "docutils literal" > a< / tt > < / dt >
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< dd > < p class = "first" > Sort process list automatically< / p >
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< ul class = "last simple" >
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< li > If CPU iowait < tt class = "docutils literal" > > 60%< / tt > , sort processes by I/O read and write< / li >
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< li > If CPU < tt class = "docutils literal" > > 70%< / tt > , sort processes by CPU usage< / li >
< li > If MEM < tt class = "docutils literal" > > 70%< / tt > , sort processes by memory usage< / li >
< / ul >
< / dd >
< dt > < tt class = "docutils literal" > b< / tt > < / dt >
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< dd > Switch between bit/s or Byte/s for network I/O< / dd >
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< dt > < tt class = "docutils literal" > c< / tt > < / dt >
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< dd > Sort processes by CPU usage< / dd >
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< dt > < tt class = "docutils literal" > d< / tt > < / dt >
< dd > Show/hide disk I/O stats< / dd >
< dt > < tt class = "docutils literal" > f< / tt > < / dt >
< dd > Show/hide file system stats< / dd >
< dt > < tt class = "docutils literal" > h< / tt > < / dt >
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< dd > Show/hide the help screen< / dd >
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< dt > < tt class = "docutils literal" > i< / tt > < / dt >
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< dd > Sort processes by I/O rate< / dd >
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< dt > < tt class = "docutils literal" > l< / tt > < / dt >
< dd > Show/hide log messages< / dd >
< dt > < tt class = "docutils literal" > m< / tt > < / dt >
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< dd > Sort processes by MEM usage< / dd >
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< dt > < tt class = "docutils literal" > n< / tt > < / dt >
< dd > Show/hide network stats< / dd >
< dt > < tt class = "docutils literal" > p< / tt > < / dt >
< dd > Sort processes by name< / dd >
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< dt > < tt class = "docutils literal" > q< / tt > < / dt >
< dd > Quit< / dd >
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< dt > < tt class = "docutils literal" > s< / tt > < / dt >
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< dd > Show/hide sensors stats< / dd >
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< dt > < tt class = "docutils literal" > t< / tt > < / dt >
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< dd > View network I/O as combination< / dd >
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< dt > < tt class = "docutils literal" > u< / tt > < / dt >
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< dd > View cumulative network I/O< / dd >
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< dt > < tt class = "docutils literal" > w< / tt > < / dt >
< dd > Delete finished warning log messages< / dd >
< dt > < tt class = "docutils literal" > x< / tt > < / dt >
< dd > Delete finished warning and critical log messages< / dd >
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< dt > < tt class = "docutils literal" > z< / tt > < / dt >
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< dd > Show/hide processes stats< / dd >
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< dt > < tt class = "docutils literal" > 1< / tt > < / dt >
< dd > Switch between global CPU and per-CPU stats< / dd >
< / dl >
< / div >
< / div >
< div class = "section" id = "configuration" >
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< h1 > < a class = "toc-backref" href = "#id13" > Configuration< / a > < / h1 >
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< p > < strong > Caution! Glances version 1.x configuration files are not compatible
with the version 2.x.< / strong > < / p >
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< p > No configuration file is mandatory to use Glances.< / p >
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< p > Furthermore a configuration file is needed to set up limits, disks or
network interfaces to hide and/or monitored processes list.< / p >
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< p > By default, the configuration file is under:< / p >
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< table class = "docutils field-list" frame = "void" rules = "none" >
< col class = "field-name" / >
< col class = "field-body" / >
< tbody valign = "top" >
< tr class = "field" > < th class = "field-name" > Linux:< / th > < td class = "field-body" > < tt class = "docutils literal" > /etc/glances/glances.conf< / tt > < / td >
< / tr >
< tr class = "field" > < th class = "field-name" > *BSD and OS X:< / th > < td class = "field-body" > < tt class = "docutils literal" > /usr/local/etc/glances/glances.conf< / tt > < / td >
< / tr >
< tr class = "field" > < th class = "field-name" > Windows:< / th > < td class = "field-body" > < tt class = "docutils literal" > < span class = "pre" > %APPDATA%\glances\glances.conf< / span > < / tt > < / td >
< / tr >
< / tbody >
< / table >
< p > On Windows XP, the < tt class = "docutils literal" > %APPDATA%< / tt > path is:< / p >
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< pre class = "literal-block" >
C:\Documents and Settings\< User> \Application Data
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< / pre >
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< p > Since Windows Vista and newer versions:< / p >
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< pre class = "literal-block" >
C:\Users\< User> \AppData\Roaming
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< / pre >
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< p > You can override the default configuration, located in one of the above
directories on your system, except for Windows.< / p >
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< p > Just copy the < tt class = "docutils literal" > glances.conf< / tt > file to your < tt class = "docutils literal" > $XDG_CONFIG_HOME< / tt > directory,
e.g., on Linux:< / p >
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< pre class = "code console literal-block" >
< span class = "generic output" > mkdir -p $XDG_CONFIG_HOME/glances
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cp /usr/share/doc/glances/glances.conf $XDG_CONFIG_HOME/glances/< / span >
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< / pre >
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< p > On OS X, you should copy the configuration file to
< tt class = "docutils literal" > ~/Library/Application Support/glances/< / tt > .< / p >
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< / div >
< div class = "section" id = "anatomy-of-the-application" >
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< h1 > < a class = "toc-backref" href = "#id14" > Anatomy Of The Application< / a > < / h1 >
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< div class = "section" id = "legend" >
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< h2 > < a class = "toc-backref" href = "#id15" > Legend< / a > < / h2 >
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< div class = "line-block" >
< div class = "line" > < tt class = "docutils literal" > GREEN< / tt > stat counter is < tt class = "docutils literal" > " OK" < / tt > < / div >
< div class = "line" > < tt class = "docutils literal" > BLUE< / tt > stat counter is < tt class = "docutils literal" > " CAREFUL" < / tt > < / div >
< div class = "line" > < tt class = "docutils literal" > MAGENTA< / tt > stat counter is < tt class = "docutils literal" > " WARNING" < / tt > < / div >
< div class = "line" > < tt class = "docutils literal" > RED< / tt > stat counter is < tt class = "docutils literal" > " CRITICAL" < / tt > < / div >
< / div >
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< p > < em > Note< / em > : only stats with colored background will be logged in the alert
view.< / p >
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< / div >
< div class = "section" id = "header" >
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< h2 > < a class = "toc-backref" href = "#id16" > Header< / a > < / h2 >
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< img alt = "images/header.png" src = "images/header.png" / >
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< p > The header shows the hostname, OS name, release version, platform
architecture and system uptime (on the upper right corner).
Additionally, on GNU/Linux, it also shows the kernel version.< / p >
< p > In client mode, the server connection status is displayed.< / p >
< p > Connected:< / p >
< img alt = "images/connected.png" src = "images/connected.png" / >
< p > Disconnected:< / p >
< img alt = "images/disconnected.png" src = "images/disconnected.png" / >
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< / div >
< div class = "section" id = "cpu" >
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< h2 > < a class = "toc-backref" href = "#id17" > CPU< / a > < / h2 >
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< p > Short view:< / p >
< img alt = "images/cpu.png" src = "images/cpu.png" / >
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< p > If enough horizontal space is available, extended CPU information are
displayed.< / p >
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< p > Extended view:< / p >
< img alt = "images/cpu-wide.png" src = "images/cpu-wide.png" / >
< p > To switch to per-CPU stats, just hit the < tt class = "docutils literal" > 1< / tt > key:< / p >
< img alt = "images/per-cpu.png" src = "images/per-cpu.png" / >
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< p > The CPU stats are shown as a percentage and for the configured refresh
time. The total CPU usage is displayed on the first line.< / p >
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< div class = "line-block" >
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< div class = "line" > If user|system CPU is < tt class = "docutils literal" > < 50%< / tt > , then status is set to < tt class = "docutils literal" > " OK" < / tt > < / div >
< div class = "line" > If user|system CPU is < tt class = "docutils literal" > > 50%< / tt > , then status is set to < tt class = "docutils literal" > " CAREFUL" < / tt > < / div >
< div class = "line" > If user|system CPU is < tt class = "docutils literal" > > 70%< / tt > , then status is set to < tt class = "docutils literal" > " WARNING" < / tt > < / div >
< div class = "line" > If user|system CPU is < tt class = "docutils literal" > > 90%< / tt > , then status is set to < tt class = "docutils literal" > " CRITICAL" < / tt > < / div >
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< / div >
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< p > < em > Note< / em > : limit values can be overwritten in the configuration file under
the < tt class = "docutils literal" > [cpu]< / tt > and/or < tt class = "docutils literal" > [percpu]< / tt > sections.< / p >
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< / div >
< div class = "section" id = "load" >
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< h2 > < a class = "toc-backref" href = "#id18" > Load< / a > < / h2 >
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< img alt = "images/load.png" src = "images/load.png" / >
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< p > On the < em > No Sheep< / em > blog, < em > Zachary Tirrell< / em > defines the load average < a class = "footnote-reference" href = "#id3" id = "id1" > [1]< / a > :< / p >
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< blockquote >
" In short it is the average sum of the number of processes
waiting in the run-queue plus the number currently executing
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over 1, 5, and 15 minutes time periods." < / blockquote >
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< p > Glances gets the number of CPU core to adapt the alerts.
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Alerts on load average are only set on 15 minutes time period.
The first line also displays the number of CPU core.< / p >
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< div class = "line-block" >
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< div class = "line" > If load average is < tt class = "docutils literal" > < 0.7*core< / tt > , then status is set to < tt class = "docutils literal" > " OK" < / tt > < / div >
< div class = "line" > If load average is < tt class = "docutils literal" > > 0.7*core< / tt > , then status is set to < tt class = "docutils literal" > " CAREFUL" < / tt > < / div >
< div class = "line" > If load average is < tt class = "docutils literal" > > 1*core< / tt > , then status is set to < tt class = "docutils literal" > " WARNING" < / tt > < / div >
< div class = "line" > If load average is < tt class = "docutils literal" > > 5*core< / tt > , then status is set to < tt class = "docutils literal" > " CRITICAL" < / tt > < / div >
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< / div >
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< p > < em > Note< / em > : limit values can be overwritten in the configuration file under
the < tt class = "docutils literal" > [load]< / tt > section.< / p >
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< / div >
< div class = "section" id = "memory" >
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< h2 > < a class = "toc-backref" href = "#id19" > Memory< / a > < / h2 >
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< p > Glances uses two columns: one for the < tt class = "docutils literal" > RAM< / tt > and one for the < tt class = "docutils literal" > SWAP< / tt > .< / p >
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< img alt = "images/mem.png" src = "images/mem.png" / >
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< p > If enough space is available, Glances displays extended information for
the < tt class = "docutils literal" > RAM< / tt > :< / p >
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< img alt = "images/mem-wide.png" src = "images/mem-wide.png" / >
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< p > Alerts are only set for used memory and used swap.< / p >
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< div class = "line-block" >
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< div class = "line" > If used memory|swap is < tt class = "docutils literal" > < 50%< / tt > , then status is set to < tt class = "docutils literal" > " OK" < / tt > < / div >
< div class = "line" > If used memory|swap is < tt class = "docutils literal" > > 50%< / tt > , then status is set to < tt class = "docutils literal" > " CAREFUL" < / tt > < / div >
< div class = "line" > If used memory|swap is < tt class = "docutils literal" > > 70%< / tt > , then status is set to < tt class = "docutils literal" > " WARNING" < / tt > < / div >
< div class = "line" > If used memory|swap is < tt class = "docutils literal" > > 90%< / tt > , then status is set to < tt class = "docutils literal" > " CRITICAL" < / tt > < / div >
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< / div >
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< p > < em > Note< / em > : limit values can be overwritten in the configuration file under
the < tt class = "docutils literal" > [memory]< / tt > and/or < tt class = "docutils literal" > [memswap]< / tt > sections.< / p >
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< / div >
< div class = "section" id = "network" >
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< h2 > < a class = "toc-backref" href = "#id20" > Network< / a > < / h2 >
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< img alt = "images/network.png" src = "images/network.png" / >
< p > Glances displays the network interface bit rate. The unit is adapted
dynamically (bits per second, kbits per second, Mbits per second, etc).< / p >
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< p > Alerts are only set if the maximum speed per network interface is available
(see sample in the configuration file).< / p >
< p > < em > Note< / em > : it is possibile to define a list of network interfaces to hide
and per-interface limit values in the < tt class = "docutils literal" > [network]< / tt > section of the
configuration file.< / p >
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< / div >
< div class = "section" id = "disk-i-o" >
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< h2 > < a class = "toc-backref" href = "#id21" > Disk I/O< / a > < / h2 >
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< img alt = "images/diskio.png" src = "images/diskio.png" / >
< p > Glances displays the disk I/O throughput. The unit is adapted dynamically.< / p >
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< p > There is no alert on this information.< / p >
< p > < em > Note< / em > : it is possible to define a list of disks to hide under the
< tt class = "docutils literal" > [diskio]< / tt > section in the configuration file.< / p >
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< / div >
< div class = "section" id = "file-system" >
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< h2 > < a class = "toc-backref" href = "#id22" > File System< / a > < / h2 >
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< img alt = "images/fs.png" src = "images/fs.png" / >
< p > Glances displays the used and total file system disk space. The unit is
adapted dynamically.< / p >
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< p > Alerts are set for used disk space.< / p >
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< div class = "line-block" >
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< div class = "line" > If used disk is < tt class = "docutils literal" > < 50%< / tt > , then status is set to < tt class = "docutils literal" > " OK" < / tt > < / div >
< div class = "line" > If used disk is < tt class = "docutils literal" > > 50%< / tt > , then status is set to < tt class = "docutils literal" > " CAREFUL" < / tt > < / div >
< div class = "line" > If used disk is < tt class = "docutils literal" > > 70%< / tt > , then status is set to < tt class = "docutils literal" > " WARNING" < / tt > < / div >
< div class = "line" > If used disk is < tt class = "docutils literal" > > 90%< / tt > , then status is set to < tt class = "docutils literal" > " CRITICAL" < / tt > < / div >
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< / div >
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< p > < em > Note< / em > : limit values can be overwritten in the configuration file under
the < tt class = "docutils literal" > [filesystem]< / tt > section.< / p >
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< / div >
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< div class = "section" id = "sensors" >
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< h2 > < a class = "toc-backref" href = "#id23" > Sensors< / a > < / h2 >
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< p > Glances can displays the sensors information using < cite > lm-sensors< / cite > ,
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< cite > hddtemp< / cite > and < cite > batinfo< / cite > < a class = "footnote-reference" href = "#id4" id = "id2" > [2]< / a > .< / p >
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< p > All of the above libraries are available only on Linux.< / p >
< p > As of lm-sensors, a filter is being applied in order to display
temperature only.< / p >
< img alt = "images/sensors.png" src = "images/sensors.png" / >
< p > There is no alert on this information.< / p >
< p > < em > Note< / em > : limit values can be overwritten in the configuration file under
the < tt class = "docutils literal" > [sensors]< / tt > section.< / p >
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< / div >
< div class = "section" id = "processes-list" >
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< h2 > < a class = "toc-backref" href = "#id24" > Processes List< / a > < / h2 >
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< p > Compact view:< / p >
< img alt = "images/processlist.png" src = "images/processlist.png" / >
< p > Full view:< / p >
< img alt = "images/processlist-wide.png" src = "images/processlist-wide.png" / >
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< p > Three views are available for processes:< / p >
< ul class = "simple" >
< li > Processes summary< / li >
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< li > Optional monitored processes list (see below)< / li >
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< li > Processes list< / li >
< / ul >
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< p > The processes summary line display:< / p >
< ul class = "simple" >
< li > Tasks number (total number of processes)< / li >
< li > Threads number< / li >
< li > Running tasks number< / li >
< li > Sleeping tasks number< / li >
< li > Other tasks number (not running or sleeping)< / li >
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< li > Sort key< / li >
< / ul >
< p > By default, or if you hit the < tt class = "docutils literal" > a< / tt > key, the processes list is
automatically sorted by:< / p >
< ul class = "simple" >
< li > < tt class = "docutils literal" > CPU< / tt > if there is no alert (default behavior)< / li >
< li > < tt class = "docutils literal" > CPU< / tt > if a CPU or LOAD alert is detected< / li >
< li > < tt class = "docutils literal" > MEM< / tt > if a memory alert is detected< / li >
< li > < tt class = "docutils literal" > Disk I/O< / tt > if a CPU iowait alert is detected< / li >
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< / ul >
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< p > The number of processes in the list is adapted to the screen size.< / p >
< dl class = "docutils" >
< dt > < tt class = "docutils literal" > CPU%< / tt > < / dt >
< dd > % of CPU used by the process< / dd >
< dt > < tt class = "docutils literal" > MEM%< / tt > < / dt >
< dd > % of MEM used by the process< / dd >
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< dt > < tt class = "docutils literal" > VIRT< / tt > < / dt >
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< dd > Total program size - Virtual Memory Size (VMS)< / dd >
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< dt > < tt class = "docutils literal" > RES< / tt > < / dt >
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< dd > Resident Set Size (RSS)< / dd >
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< dt > < tt class = "docutils literal" > PID< / tt > < / dt >
< dd > Process ID< / dd >
< dt > < tt class = "docutils literal" > USER< / tt > < / dt >
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< dd > User ID< / dd >
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< dt > < tt class = "docutils literal" > NI< / tt > < / dt >
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< dd > Nice level of the process (niceness other than 0 is highlighted)< / dd >
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< dt > < tt class = "docutils literal" > S< / tt > < / dt >
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< dd > Process status (running process is highlighted)< / dd >
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< dt > < tt class = "docutils literal" > TIME+< / tt > < / dt >
< dd > Cumulative CPU time used< / dd >
< dt > < tt class = "docutils literal" > IOR/s< / tt > < / dt >
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< dd > Per process I/O read rate (in Byte/s)< / dd >
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< dt > < tt class = "docutils literal" > IOW/s< / tt > < / dt >
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< dd > Per process I/O write rate (in Byte/s)< / dd >
< dt > < tt class = "docutils literal" > COMMAND< / tt > < / dt >
< dd > Process command line (process name is highlighted)< / dd >
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< / dl >
< p > Process status legend:< / p >
< dl class = "docutils" >
< dt > < tt class = "docutils literal" > R< / tt > < / dt >
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< dd > Running< / dd >
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< dt > < tt class = "docutils literal" > S< / tt > < / dt >
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< dd > Sleeping (may be interrupted)< / dd >
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< dt > < tt class = "docutils literal" > D< / tt > < / dt >
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< dd > Disk sleep (may not be interrupted)< / dd >
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< dt > < tt class = "docutils literal" > T< / tt > < / dt >
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< dd > Traced / Stopped< / dd >
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< dt > < tt class = "docutils literal" > Z< / tt > < / dt >
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< dd > Zombie< / dd >
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< / dl >
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< p > < em > Note< / em > : limit values can be overwritten in the configuration file under
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the < tt class = "docutils literal" > [process]< / tt > section.< / p >
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< / div >
< div class = "section" id = "monitored-processes-list" >
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< h2 > < a class = "toc-backref" href = "#id25" > Monitored Processes List< / a > < / h2 >
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< p > The monitored processes list allows user, through the configuration file,
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to group processes and quickly show if the number of running processes is
not good.< / p >
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< img alt = "images/monitored.png" src = "images/monitored.png" / >
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< p > Each item is defined by:< / p >
< ul class = "simple" >
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< li > < tt class = "docutils literal" > description< / tt > : description of the processes (max 16 chars).< / li >
< li > < tt class = "docutils literal" > regex< / tt > : regular expression of the processes to monitor.< / li >
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< li > < tt class = "docutils literal" > command< / tt > (optional): full path to shell command/script for extended
stat. Should return a single line string. Use with caution.< / li >
< li > < tt class = "docutils literal" > countmin< / tt > (optional): minimal number of processes. A warning will
be displayed if number of processes < count.< / li >
< li > < tt class = "docutils literal" > countmax< / tt > (optional): maximum number of processes. A warning will
be displayed if number of processes > count.< / li >
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< / ul >
< p > Up to 10 items can be defined.< / p >
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< p > For example, if you want to monitor the Nginx processes on a Web server,
the following definition should do the job:< / p >
< pre class = "literal-block" >
[monitor]
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list_1_description=Nginx server
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list_1_regex=.*nginx.*
list_1_command=nginx -v
list_1_countmin=1
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list_1_countmax=4
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< / pre >
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< p > If you also want to monitor the PHP-FPM daemon processes, you should add
another item:< / p >
< pre class = "literal-block" >
[monitor]
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list_1_description=Nginx server
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list_1_regex=.*nginx.*
list_1_command=nginx -v
list_1_countmin=1
list_1_countmax=4
list_1_description=PHP-FPM
list_1_regex=.*php-fpm.*
list_1_countmin=1
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list_1_countmax=20
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< / pre >
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< p > In client/server mode, the list is defined on the server side.
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A new method, called < cite > getAllMonitored< / cite > , is available in the APIs and
get the JSON representation of the monitored processes list.< / p >
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< p > Alerts are set as following:< / p >
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< div class = "line-block" >
< div class = "line" > If number of processes is 0, then status is set to < tt class = "docutils literal" > " CRITICAL" < / tt > < / div >
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< div class = "line" > If number of processes is min < current < max, then status is set to < tt class = "docutils literal" > " OK" < / tt > < / div >
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< div class = "line" > Else status is set to < tt class = "docutils literal" > " WARNING" < / tt > < / div >
< / div >
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< / div >
< div class = "section" id = "logs" >
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< h2 > < a class = "toc-backref" href = "#id26" > Logs< / a > < / h2 >
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< img alt = "images/logs.png" src = "images/logs.png" / >
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< p > A log messages list is displayed in the bottom of the screen if (and
only if):< / p >
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< ul class = "simple" >
< li > at least one < tt class = "docutils literal" > WARNING< / tt > or < tt class = "docutils literal" > CRITICAL< / tt > alert was occurred< / li >
< li > space is available in the bottom of the console/terminal< / li >
< / ul >
< p > Each alert message displays the following information:< / p >
< ol class = "arabic simple" >
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< li > start datetime< / li >
< li > duration if alert is terminated or < cite > ongoing< / cite > if the alert is still in
progress< / li >
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< li > alert name< / li >
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< li > {min,avg,max} values or number of running processes for monitored
processes list alerts< / li >
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< / ol >
< / div >
< / div >
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< div class = "section" id = "other-outputs" >
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< h1 > < a class = "toc-backref" href = "#id27" > Other Outputs< / a > < / h1 >
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< p > It is possible to export statistics to CSV file.< / p >
< pre class = "code console literal-block" >
< span class = "generic prompt" > $< / span > glances --output-csv /tmp/glances.csv
< / pre >
< p > CSV files have two lines per stats:< / p >
< ul class = "simple" >
< li > Stats description< / li >
< li > Stats (comma separated)< / li >
< / ul >
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< / div >
< div class = "section" id = "api-documentation" >
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< h1 > < a class = "toc-backref" href = "#id28" > API Documentation< / a > < / h1 >
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< p > Glances uses a < a class = "reference external" href = "http://docs.python.org/2/library/simplexmlrpcserver.html" > XML-RPC server< / a > and can be used by another client software.< / p >
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< p > API documentation is available at
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< a class = "reference external" href = "https://github.com/nicolargo/glances/wiki/The-Glances-2.x-API-How-to" > https://github.com/nicolargo/glances/wiki/The-Glances-2.x-API-How-to< / a > .< / p >
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< / div >
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< div class = "section" id = "support" >
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< h1 > < a class = "toc-backref" href = "#id29" > Support< / a > < / h1 >
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< p > To report a bug or a feature request use the bug tracking system at
< a class = "reference external" href = "https://github.com/nicolargo/glances/issues" > https://github.com/nicolargo/glances/issues< / a > .< / p >
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< p > Feel free to contribute!< / p >
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< table class = "docutils footnote" frame = "void" id = "id3" rules = "none" >
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< colgroup > < col class = "label" / > < col / > < / colgroup >
< tbody valign = "top" >
< tr > < td class = "label" > < a class = "fn-backref" href = "#id1" > [1]< / a > < / td > < td > < a class = "reference external" href = "http://nosheep.net/story/defining-unix-load-average/" > http://nosheep.net/story/defining-unix-load-average/< / a > < / td > < / tr >
< / tbody >
< / table >
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< table class = "docutils footnote" frame = "void" id = "id4" rules = "none" >
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< colgroup > < col class = "label" / > < col / > < / colgroup >
< tbody valign = "top" >
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< tr > < td class = "label" > < a class = "fn-backref" href = "#id2" > [2]< / a > < / td > < td > < a class = "reference external" href = "https://github.com/nicolargo/batinfo" > https://github.com/nicolargo/batinfo< / a > < / td > < / tr >
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< / tbody >
< / table >
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< / div >
< / div >
< / body >
< / html >
