[14.1.X] make AlcaBeamMonitor hoard less memory

[mmusich]

backport of #46451

PR description:

This PR is meant to partially address #42995 by means of storing the vertex position and errors for the vertices of interest in a dedicated struct within BeamSpotInfo instead of copying the raw reco::Vertex objects directly in it.

PR validation:

cmssw compiles, see validation in the master PR #46451

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:

Verbatim backport of #46451 for 2024 ppRef and HIon operations.

[mmusich]

type performance-improvements

[cmsbuild]

A new Pull Request was created by @mmusich for CMSSW_14_1_X.

It involves the following packages:

• DQM/BeamMonitor (db, dqm)

@antoniovagnerini, @atpathak, @cmsbuild, @consuegs, @francescobrivio, @nothingface0, @perrotta, @rvenditti, @syuvivida, @tjavaid can you please review it and eventually sign? Thanks.
@JanChyczynski, @PonIlya, @francescobrivio, @mmusich, @rsreds, @yuanchao this is something you requested to watch as well.
@antoniovilela, @mandrenguyen, @rappoccio, @sextonkennedy you are the release manager for this.

cms-bot commands are listed here

• Backported from make AlcaBeamMonitor hoard less memory #46451

[cmsbuild]

cms-bot internal usage

[mmusich]

@cmsbuild, please test

[cmsbuild]

+1

Size: This PR adds an extra 16KB to repository
Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-7a45ed/42328/summary.html
COMMIT: 50e9dc0
CMSSW: CMSSW_14_1_X_2024-10-21-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/46465/42328/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially added 1 lines to the logs
• Reco comparison results: 2 differences found in the comparisons
• DQMHistoTests: Total files compared: 45
• DQMHistoTests: Total histograms compared: 3438304
• DQMHistoTests: Total failures: 3
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3438281
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 44 files compared)
• Checked 195 log files, 166 edm output root files, 45 DQM output files
• TriggerResults: no differences found

[mmusich]

@cms-sw/db-l2 @cms-sw/dqm-l2 I think we're expecting a patch for HI data-taking soon. It would be great to get this in, please have a look.

[antoniovagnerini]

+1

[perrotta]

+db

• Verbatim backport of make AlcaBeamMonitor hoard less memory #46451
• IB tests already succeeded in CMSSW_14_2_X_2024-10-21-2300 for several OS

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_14_1_X IBs (tests are also fine) and once validation in the development release cycle CMSSW_14_2_X is complete. This pull request will now be reviewed by the release team before it's merged. @mandrenguyen, @sextonkennedy, @rappoccio, @antoniovilela (and backports should be raised in the release meeting by the corresponding L2)

[mandrenguyen]

+1