Open bobrik opened 5 years ago
We borrowed idle_regexp for our internal system and it looks like the regexp hides some legitimate stacks in softirq context.
idle_regexp
Current filter produces the following flamegraph:
If I make idle_regexp match nothing, I can see much more interesting stuff:
The trace comes from on Intel Skylake.
@brendangregg ^^
@brendangregg can you take a look into the idle regex used to filter idle stacks? There's a clear example of the stack filtering differences in https://github.com/Netflix/flamescope/issues/143
We borrowed
idle_regexp
for our internal system and it looks like the regexp hides some legitimate stacks in softirq context.Current filter produces the following flamegraph:
If I make
idle_regexp
match nothing, I can see much more interesting stuff:The trace comes from on Intel Skylake.