Support debug/pprof/symbol call to enable remote jeprof

[CalvinNeo]

What is changed and how it works?

Issue Number: Close #xxx

What's Changed:

Related changes

• PR to update pingcap/docs/pingcap/docs-cn:
• Need to cherry-pick to the release branch

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Release note

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Lloyd-Pottiger

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[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-08-23 09:31:21.380439081 +0000 UTC m=+517076.514889315: ☑️ agreed by Lloyd-Pottiger.

[CalvinNeo]

Note, we still have to set

export MALLOC_CONF="prof:true,prof_active:false"

in scripts/run_tiflash.sh

before a newer version of tiup than 1.16 is released.

[JaySon-Huang]

why do we need a "sleep" here?

[CalvinNeo]

Wait for a failed MsgSnapshot

[CalvinNeo]

Sleep 10s on proxy's side

perl /DATA/disk3/calvin_81/disk1/tiflash/tics2/contrib/tiflash-proxy/proxy_components/proxy_server/src/status_server/jeprof.in --raw "http://127.0.0.1:5765/debug/pprof/heap"

stdout

!!!!! CMD is curl -s --fail 'http://127.0.0.1:5765/debug/pprof/heap' > /DATA/disk1/calvin/jeprof/.tmp.tiflash.1724656693.127.0.0.1.pprof.heap
Fetching /pprof/heap profile from http://127.0.0.1:5765/debug/pprof/heap to
  /DATA/disk1/calvin/jeprof/tiflash.1724656693.127.0.0.1.pprof.heap
Wrote profile to /DATA/disk1/calvin/jeprof/tiflash.1724656693.127.0.0.1.pprof.heap

Proxy's log

[2024/08/26 15:18:13.222 +08:00] [INFO] [profile.rs:111] ["!!!!!! start_one_heap_profile start"] [thread_id=670]
[2024/08/26 15:18:23.223 +08:00] [INFO] [profile.rs:115] ["!!!!!! start_one_heap_profile end"] [thread_id=670]