Makefile: add more bench-* targets for performance suite

[Somesh42]

Summary

Extends the existing make bench-put / scripts/benchmark_test.sh path from #16467
instead of introducing a separate benchmark suite tool.

• Add make targets for additional workloads: bench-range, bench-txn-put,
  bench-stm, bench-lease-keepalive, bench-watch, bench-watch-latency
• Keep the same lifecycle as bench-put: build etcd, install benchmark if needed,
  start a temporary local etcd, run the workload with --report-perfdash, tear down
• Improve scripts/benchmark_test.sh so it resolves the benchmark binary from
  PATH, $(go env GOPATH)/bin, or ./bin/tools/benchmark
• Document the new targets in tools/benchmark/README.md

This is a follow-up to maintainer feedback that new performance work should expand
the existing benchmarking workflow rather than add another runner.

Fixes: (open/link related issue if any; otherwise reference #16467)

Test plan

• make bench-put ARGS='--total=1000'
• make bench-range ARGS='--total=1000'
• make bench-txn-put ARGS='--total=1000'
• make bench-stm ARGS='--total=1000'
• make bench-lease-keepalive ARGS='--total=1000'
• Confirm each run starts/stops local etcd and emits perfdash-compatible output
• Confirm benchmark is found when installed under $(go env GOPATH)/bin but not on PATH

[kubernetes-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: Somesh42
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[kubernetes-prow]

Hi @Somesh42. Thanks for your PR.

I'm waiting for a etcd-io member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work.

Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[serathius]

Not needed.

[serathius]

Don't want

[Somesh42]

@serathius removed the benchmark_test.sh changes.

[serathius]

Think we can add all benchmarks, however I think they need to be redesigned and updated to be more reflecting for performance dimensions we care about. See #16467 (comment) section about etcd SLI

/ok-to-test

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 69.68%. Comparing base (74aba8c) to head (19b0fc9).
⚠️ Report is 155 commits behind head on main.

Additional details and impacted files

see 37 files with indirect coverage changes

@@            Coverage Diff             @@
##             main   #22158      +/-   ##
==========================================
- Coverage   69.77%   69.68%   -0.09%     
==========================================
  Files         449      449              
  Lines       38208    38188      -20     
==========================================
- Hits        26660    26613      -47     
- Misses      10122    10140      +18     
- Partials     1426     1435       +9     

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[Somesh42]

/test pull-etcd-markdown-lint
/test pull-etcd-grpcproxy-integration-amd64

[Somesh42]

Think we can add all benchmarks, however I think they need to be redesigned and updated to be more reflecting for performance dimensions we care about. See #16467 (comment) section about etcd SLI

/ok-to-test

Thanks @serathius.. makes sense.
Happy to keep these make targets as a first step to expose the existing
benchmarks through the same benchmark_test.sh path as bench-put.

For follow-up, I'll look at #16467 (SLI section) and propose dedicated
benchmark scenarios that map to the performance dimensions we care about,
rather than treating the current subcommands as the final suite.
Fixed the markdown lint failure in the README.

[Somesh42]

All required checks are green now (including markdown-lint and the earlier grpcproxy flake).
Ready for review/approval when you have a moment @serathius