diff --git a/Performance.md b/Performance.md
index f705430..bf90691 100644
--- a/Performance.md
+++ b/Performance.md
@@ -1,3 +1,15 @@
+## Memory usage
+
+Memory usage of 3 instances of `nnn` under general usage.
+
+<pre>
+$ top -bn 1 -p (pidof nnn | tr ' ' ',') | grep "^ "
+  PID USER      PR  NI    VIRT   <b> RES</b>    SHR S  %CPU %MEM     TIME+ COMMAND
+ 1054 vaio      20   0   14796   <b>3572</b>   2512 S   0.0  0.0   0:00.62 nnn -firs
+ 1005 vaio      20   0   14720   <b>3308</b>   2496 S   0.0  0.0   0:00.01 nnn -firs
+  942 vaio      20   0   14732   <b>3268</b>   2448 S   0.0  0.0   0:00.05 nnn -firs
+</pre>
+
 ## Comparison
 
 Stripped binary (or script) size and memory usage of `nnn` and some other popular FMs (which existed before `nnn`) while viewing a directory with 13.5K files (0 directories), sorted by size/du: