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Expose Pressure Stall Information as metrics #3052

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dqminh opened this issue Jan 27, 2022 · 3 comments · May be fixed by #3083
Open

Expose Pressure Stall Information as metrics #3052

dqminh opened this issue Jan 27, 2022 · 3 comments · May be fixed by #3083

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@dqminh
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dqminh commented Jan 27, 2022

Pressure Stall Information is exposed per cgroup in cgroupv2. It's a good way to understand contention due to lack of resources ( cpu, memory, io ). For example

# /sys/fs/cgroup/system.slice/cpu.pressure
some avg10=0.00 avg60=0.00 avg300=0.00 total=306212315
full avg10=0.00 avg60=0.00 avg300=0.00 total=246733962

It would be great to expose this data source in cadvisor as metrics.
@dqminh dqminh changed the title Exopse Pressure Stall Information as metrics Expose Pressure Stall Information as metrics Jan 27, 2022
@mrunalp
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mrunalp commented Jan 28, 2022

This is something @bobbypage and I talked about adding recently. Also, adding @kolyshkin here.

@dqminh
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dqminh commented Jan 28, 2022

I added support for runc here opencontainers/runc#3358, so once that goes in we can update libcontainer in cadvisor and expose the metrics here.

@bobbypage
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That would be awesome to have support in libcontainer and use it in cAdvisor. Thanks @dqminh !

@dqminh dqminh linked a pull request Mar 23, 2022 that will close this issue
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@ShadowJonathan ShadowJonathan mentioned this issue Nov 24, 2023
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Support for exposing PSI metrics dqminh/cadvisor
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@mrunalp @dqminh @bobbypage