Add script to merge the JSON files produced by the FastTimerService [14.0.x]

[fwyzard]

PR description:

Add script to merge the content of multiple "resources.json" files produced by the FastTimerService, and print the result to standard output.

Usage: mergeResourceJson.py FILE [FILE ...]

Example:

mergeResourceJson.py step*/pid*/resources.json > resources.json

PR validation:

Tested producing 8 JSON files and merging them.

If this PR is a backport please specify the original PR and why you need to backport that PR. If this PR will be backported please specify to which release cycle the backport is meant for:

Backport of #44836 to 14.0.x for timing studies.

[cmsbuild]

A new Pull Request was created by @fwyzard for CMSSW_14_0_X.

It involves the following packages:

• HLTrigger/Timer (hlt)

@cmsbuild, @mmusich, @Martin-Grunewald can you please review it and eventually sign? Thanks.
@missirol, @Martin-Grunewald, @silviodonato this is something you requested to watch as well.
@sextonkennedy, @rappoccio, @antoniovilela you are the release manager for this.

cms-bot commands are listed here

• Backported from Add script to merge the JSON files produced by the FastTimerService #44836

[cmsbuild]

cms-bot internal usage

[fwyzard]

backport #44836

[fwyzard]

please test

Just for the signatures

[fwyzard]

@cms-sw/orp-l2 please merge this for the next 14.0.x release at your convenience.

[mmusich]

+hlt

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_14_0_X IBs after it passes the integration tests and once validation in the development release cycle CMSSW_14_1_X is complete. This pull request will now be reviewed by the release team before it's merged. @antoniovilela, @sextonkennedy, @rappoccio (and backports should be raised in the release meeting by the corresponding L2)

[antoniovilela]

+1

[antoniovilela]

merge

• added script.

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-e2af56/39078/summary.html
COMMIT: 91eeaca
CMSSW: CMSSW_14_0_X_2024-04-24-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/44842/39078/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 87 lines from the logs
• Reco comparison results: 39 differences found in the comparisons
• DQMHistoTests: Total files compared: 48
• DQMHistoTests: Total histograms compared: 3319088
• DQMHistoTests: Total failures: 0
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3319068
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 47 files compared)
• Checked 202 log files, 165 edm output root files, 48 DQM output files
• TriggerResults: no differences found