we tried to write to a socket before and the buffer was full
so the write failed. then we'd want to know if it was ready for writing
again i guess.... anyway i'm not so sure that happens a lot so i took it
out and i guess we'll see what happens. also added more udp/loop
debugging statements.
were somewhat of an artifact from bygone days and the
select() call when done right seems to not use any more
cpu. plus it should work well with apple os x and cygwin etc.
sigtimedwait() was cutting it, it was queueing up too
many DUPLICATE signals and overflowing the rt signal queue.
now gb has its own real-time signal queueing logic that
just sets the bit of the FDs that need attention.
i think threaded reads/writes are better now too but
the performance graph is broken so i need to fix that first.
the threads page looks good though. overhaul this hopefully
is a massive and stable performance improvement.
lots of core fixes.
took out ppthtml powerpoint convert, it hangs.
dynamic rdbmap to save memory per coll.
fixed disk page cache logic and brought it
back.
so it does not silently kill the gb
process because we no longer have a handler
for it because it was bogging down the cpu
because it went off every time a udp datagram
was sent/received and it seemed to have a ton
of overhead with it. SIGIO used to be sent
when the signal queue was full so we'd resort
to polling the file descriptors, so i'm not
sure how this will affect us. also updated
Threads.cpp to use getpidtid() instead of
getpid() to get the thread id when using
pthreads, not the process id. using pthreads
is now default behaviour even though they suck.
we used to use clone() but the newer stuff doesn't
allow us to override errno_location anymore.
