[Run3 PromptReco] `GenericTriggerEventFlag::initRun()` uses 54.7 MB memory per stream

[makortel]

From #46040 (comment)

The GenericTriggerEventFlag::initRun() is called by 22 DQM modules (from their bookHistograms() or beginRun member functions), and ends up using 54.7 MB memory per stream in total (compare 1 thread/stream profile and 4 threads/streams profile). For an 8-thread PromptReco job this would correspond to 437 MB.

Most of the memory is held by l1t::L1TGlobalUtil::retrieveL1Setup().

Does everything need to be replicated among the modules that use GenericTriggerEventFlag?

Does everything need to be replicated among streams? Avoiding replication across streams (if possible) would potentially reduce the PromptReco job memory by 383 MB.

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A new Issue was created by @makortel.

@Dr15Jones, @antoniovilela, @makortel, @mandrenguyen, @rappoccio, @sextonkennedy, @smuzaffar can you please review it and eventually sign/assign? Thanks.

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[makortel]

assign CommonTools/TriggerUtils

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New categories assigned: hlt,l1

@aloeliger,@epalencia,@Martin-Grunewald,@mmusich you have been requested to review this Pull request/Issue and eventually sign? Thanks

[makortel]

assign dqm

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New categories assigned: dqm

@antoniovagnerini,@nothingface0,@rvenditti,@syuvivida,@tjavaid you have been requested to review this Pull request/Issue and eventually sign? Thanks

[makortel]

type performance-improvements