[Run3 PromptReco] DTTrigProd::beginRun() uses 7.3 MB memory per stream

[makortel]

From #46040 (comment)

The DTTrigProd::beginRun() uses 7.3 MB memory per stream (1 thread/stream profile vs 4 thread/stream profile. For an 8-thread/stream PromptReco this would correspond to 58 MB in total.

Does all of it need to be replicated among streams? Are the "TU"s being modified during the event processing?

Avoiding the replication could save 51 MB memory in PromptReco

[makortel]

assign L1Trigger/DTTrigger

[makortel]

type performance-improvements

[cmsbuild]

New categories assigned: l1

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

[cmsbuild]

cms-bot internal usage

[cmsbuild]

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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