Difference between revisions of "Development"

Revision as of 02:43, 18 March 2014

Huge thanks to BrendanGregg for so much of the dtrace magic.

dtrace the kernel while running a command:

dtrace -x stackframes=100 -n 'profile-997 /arg0/ {
   @[stack()] = count(); } tick-60s { exit(0); }' -o out.stacks

it will run for 60 seconds.

Convert it to a flamegraph

./stackcollapse.pl out.stacks > out.folded
./flamegraph.pl out.folded > out.svg

This is rsync -ar /usr/ /BOOM/deletea/ running;

rsync flamegraph

Or running bonnie++ in various stages;

@@ Line 24: / Line 24: @@
 Or running '''bonnie++''' in various stages;
-<gallery>
+<gallery mode="packed-hover">
-File:create.svg|Create files in sequential order [[File:create.svg]]|alt=[[File:create.svg]]
+File:create.svg|Create files in sequential order|alt=[[File:create.svg]]
 File:stat.svg|Stat files in sequential order|alt=Stat files in sequential order
 File:delete.svg|Delete files in sequential order|alt=Delete files in sequential order
 </gallery>