apis: fix resctrl qos defaults

[saintube]

Signed-off-by: saintube saintube@foxmail.com

Ⅰ. Describe what this PR does

Fixes the kubebuilder tags of Resctrl QoS to suppress BE pods' cache allocation and memory bandwidth by default.

Ⅱ. Does this pull request fix one issue?

Currently, the parameters of Resctrl QoS have been set kubebuilder tags +kubebuilder:default=xxx, which always sets some values (e.g. 100%) for the corresponding fields in NodeSLO if we do not specify these fields explicitly. This troubles the Resctrl settings for BE pods since when we only specify ResctrlQOS.Enable=true, the real default values of BE pods (e.g. 30%) are overwrited.

Ⅲ. Describe how to verify it

0. Prepare an Intel bare-metal machine that enables Intel RDT (L3 CAT & MBA) in the kernel command line.
1. Edit slo-controller-config and enable ResctrlQOS for BE pods.
2. Check /sys/fs/resctrl/BE/schemata if the L3 cache allocation and memory bandwidth are limited to 30%.

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[saintube]

cc @zwzhang0107 @jasonliu747

[codecov]

Codecov Report

Base: 68.64% // Head: 68.59% // Decreases project coverage by -0.05% ⚠️

Coverage data is based on head (a42637e) compared to base (a6559fb).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #731      +/-   ##
==========================================
- Coverage   68.64%   68.59%   -0.06%     
==========================================
  Files         205      205              
  Lines       23342    23342              
==========================================
- Hits        16024    16012      -12     
- Misses       6208     6219      +11     
- Partials     1110     1111       +1     

Flag	Coverage Δ
unittests	68.59% <ø> (-0.06%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/koordlet/runtimehooks/reconciler/reconciler.go	71.57% <0.00%> (-9.48%)	⬇️
pkg/util/httputil/reverseproxy.go	84.30% <0.00%> (-0.80%)	⬇️

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[zwzhang0107]

also check other default values

[jasonliu747]

/lgtm

[jasonliu747]

记得 charts 也要更新一下

[saintube]

also check other default values

Done.

[saintube]

记得 charts 也要更新一下

haode

[zwzhang0107]

/lgtm

[hormes]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes, jasonliu747

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