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sys-kernel/coreos-modules: enable PSI (Pressure Stall Information)

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Enable Kernel config for PSI (Pressure Stall Information), which might
help system administrators to detect bottleneck in cpu, memory and io
in an easy way.

```
$ zgrep -i _psi /proc/config.gz
CONFIG_PSI=y

$ ls -l /proc/pressure/
-r--r--r--. 1 root root 0 Oct  7 11:56 cpu
-r--r--r--. 1 root root 0 Oct  7 11:56 io
-r--r--r--. 1 root root 0 Oct  7 11:56 memory
$ cat /proc/pressure/cpu
some avg10=0.13 avg60=0.68 avg300=0.28 total=1195993
$ cat /proc/pressure/io
some avg10=0.00 avg60=1.11 avg300=0.68 total=2828208
full avg10=0.00 avg60=0.91 avg300=0.56 total=2334731
$ cat /proc/pressure/memory
some avg10=0.00 avg60=0.00 avg300=0.00 total=0
full avg10=0.00 avg60=0.00 avg300=0.00 total=0
```

See also https://www.kernel.org/doc/html/latest/accounting/psi.html ,
https://facebookmicrosites.github.io/psi/docs/overview

Fixes https://github.com/flatcar-linux/Flatcar/issues/162
This commit is contained in:
Dongsu Park 2020-10-07 13:59:27 +02:00
parent aee9d1bc02
commit 8881733152
1 changed files with 2 additions and 0 deletions
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2
sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-5.9 vendored
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@ -726,6 +726,8 @@ CONFIG_PRINTK_TIME=y
# CONFIG_PRINT_QUOTA_WARNING is not set
CONFIG_PROC_KCORE=y
CONFIG_PROFILING=y
CONFIG_PSI=y
# CONFIG_PSI_DEFAULT_DISABLED is not set
CONFIG_QED=m
CONFIG_QEDE=m
CONFIG_QEDF=m