[14_0_X] optimize and protect DisplacedRegionSeedingVertexProducer against busy events

[mandrenguyen]

backport of #44829

[cmsbuild]

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

It involves the following packages:

• RecoTracker/DisplacedRegionalTracking (reconstruction)

@cmsbuild, @mandrenguyen, @jfernan2 can you please review it and eventually sign? Thanks.
@dgulhan, @mtosi, @GiacomoSguazzoni, @JanFSchulte, @VinInn, @gpetruc, @mmusich, @missirol, @rovere, @felicepantaleo, @VourMa this is something you requested to watch as well.
@rappoccio, @sextonkennedy, @antoniovilela you are the release manager for this.

cms-bot commands are listed here

• Backported from optimize and protect DisplacedRegionSeedingVertexProducer against busy events #44829

[cmsbuild]

cms-bot internal usage

[mandrenguyen]

please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-109ae3/39153/summary.html
COMMIT: 0938409
CMSSW: CMSSW_14_0_X_2024-04-29-1100/el8_amd64_gcc12
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week1/cms-sw/cmssw/44865/39153/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• You potentially removed 3 lines from the logs
• Reco comparison results: 47 differences found in the comparisons
• DQMHistoTests: Total files compared: 49
• DQMHistoTests: Total histograms compared: 3432929
• DQMHistoTests: Total failures: 9
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 3432900
• DQMHistoTests: Total skipped: 20
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 48 files compared)
• Checked 206 log files, 170 edm output root files, 49 DQM output files
• TriggerResults: no differences found

[mandrenguyen]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_14_0_X IBs (tests are also fine) 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, @rappoccio, @sextonkennedy (and backports should be raised in the release meeting by the corresponding L2)

[francescobrivio]

@mandrenguyen is this a PR that we want to include in the next patch as well?

[mandrenguyen]

@mandrenguyen is this a PR that we want to include in the next patch as well?

IFF it's not going to slow down this urgent patch, then indeed this should be included.

[antoniovilela]

+1