pd: set madvdontneed=1 to shrink RSS after GC

[lhy1024]

Signed-off-by: lhy1024 admin@liudos.us

What problem does this PR solve?

speed up ram gc

What is changed and how it works?

tidb has similar param: https://github.com/pingcap/tiup/blob/master/embed/templates/scripts/run_tidb.sh.tpl

Check List

Release notes:

NONE

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• AstroProfundis

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[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Base: 57.19% // Head: 51.85% // Decreases project coverage by -5.34% ⚠️

Coverage data is based on head (2000e8d) compared to base (0599e0d).
Patch has no changes to coverable lines.

❗ Current head 2000e8d differs from pull request most recent head 7264518. Consider uploading reports for the commit 7264518 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2019      +/-   ##
==========================================
- Coverage   57.19%   51.85%   -5.34%     
==========================================
  Files         313      312       -1     
  Lines       33513    33502      -11     
==========================================
- Hits        19166    17371    -1795     
- Misses      12100    13889    +1789     
+ Partials     2247     2242       -5     

Flag	Coverage Δ
tiup	16.15% <ø> (ø)
unittest	?

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

Impacted Files	Coverage Δ
components/dm/ansible/worker.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/meta/err.go	0.00% <0.00%> (-76.19%)	⬇️
pkg/cluster/api/error.go	0.00% <0.00%> (-75.00%)	⬇️
pkg/crypto/rand/passwd.go	0.00% <0.00%> (-75.00%)	⬇️
pkg/telemetry/node_info.go	0.00% <0.00%> (-70.73%)	⬇️
pkg/utils/error.go	0.00% <0.00%> (-64.29%)	⬇️
components/dm/ansible/import.go	0.00% <0.00%> (-61.28%)	⬇️
pkg/telemetry/scrub.go	12.31% <0.00%> (-60.00%)	⬇️
pkg/cluster/executor/local.go	0.00% <0.00%> (-59.38%)	⬇️
pkg/cluster/ansible/inventory.go	0.00% <0.00%> (-58.01%)	⬇️
... and 43 more

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[AstroProfundis]

@lhy1024 please sign the CLA so that we can merge this PR.

[AstroProfundis]

@lhy1024 It seems the CI tests are keep failing

[lhy1024]

@lhy1024 It seems the CI tests are keep failing

There are some logs about this fail. How will I get them?

[AstroProfundis]

There are some logs about this fail. How will I get them?

You may try to find them in the assets of Github Actions run. The stdout shows that PD fails to start in certain tests.

[lhy1024]

There are some logs about this fail. How will I get them?

You may try to find them in the assets of Github Actions run. The stdout shows that PD fails to start in certain tests.

Sorry, I am referring to how should I get the log that appears in the github action, such as /home/tidb/deploy/pd-2379/log, which appears Error: failed to start pd: failed to start: n5 pd-2379.service, please check the instance's log(/home/tidb/ deploy/pd-2379/log) for more detail.: timed out waiting for port 2379 to be started after 2m0s .

[AstroProfundis]

Ummm, I reviewed the workflow and seems the log uploading has been broken for long...

Maybe you can try to reproduce that on local server? Just follow the steps in .github/workflows/integrate-cluster-cmd.yaml should be fine.

[nexustar]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 7264518