Optimize SiStripMonitorTrack to perform less string operations.

[dmitrijus]

Forward port of #8266 to 7_5_X

https://hypernews.cern.ch/HyperNews/CMS/get/swDevelopment/3171.html
(cherry picked from commit 345c6c7)

[cmsbuild]

A new Pull Request was created by @dmitrijus (Dmitrijus) for CMSSW_7_5_X.

Optimize SiStripMonitorTrack to perform less string operations.

It involves the following packages:

DQM/SiStripCommon
DQM/SiStripMonitorCluster
DQM/SiStripMonitorDigi
DQM/SiStripMonitorTrack
Validation/TrackerRecHits

@cmsbuild, @danduggan, @nclopezo, @deguio can you please review it and eventually sign? Thanks.
@venturia, @VinInn, @threus, @wmtford this is something you requested to watch as well.
You can sign-off by replying to this message having '+1' in the first line of your reply.
You can reject by replying to this message having '-1' in the first line of your reply.
If you are a L2 or a release manager you can ask for tests by saying 'please test' in the first line of a comment.
@nclopezo you are the release manager for this.
You can merge this pull request by typing 'merge' in the first line of your comment.

[deguio]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs unless changes or unless it breaks tests. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @nclopezo, @ktf, @smuzaffar

[davidlange6]

@cmsbuild, please test

[cmsbuild]

The tests are being triggered in jenkins.

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs unless changes or unless it breaks tests. This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @nclopezo, @ktf, @smuzaffar

[cmsbuild]

+1
Tested at: e3a8723
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8352/3566/summary.html

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-8352/3566/summary.html
There are some workflows for which there are errors in the baseline:
401.0 step 1
The results for the comparisons for these workflows could be incomplete
This means most likely that the IB is having errors in the relvals

[davidlange6]

@nclopezo - seems the tests on this PR finished, but the bot didn't notice as they are still pending

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_5_X IBs unless changes (tests are also fine). This pull request requires discussion in the ORP meeting before it's merged. @davidlange6, @nclopezo, @ktf, @smuzaffar

[nclopezo]

@davidlange6 It was because you merged it while the bot was stuck. So it didn't check this PR when it woke up again. Anyway, I forced it to check this one again.

[davidlange6]

@nclopezo - ah - so the bot was stuck most of the night - I had not realized at the time