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SMA performance optimisation question - time to start

Leigh_KildayLeigh_Kilday Member Ninja IT Monkey ✭✭✭✭
in SMA
We are using SMA, and our runbooks are exclusively PowerShell Scripts. From what I have found, using PowerShell Scripts instead of Workflows is the only suggestion for optimising the time to start.

I'm a bit disappointed by the average time to start for most of our runbooks. Our Production instance has 2 app servers load-balanced and we are not using the WAP at all. The average time to start for some runbooks is anywhere from 1:1 to 8:1 of the execution duration (time to start - time to finish).

I haven't looked into the volume of jobs over time yet, but runbook executions are <100 per day so I doubt it'd be overloaded. SMA servers are 8GB, 2 core @ 2.66GHz and never push their resources very hard.

I can't think of anything unique about the runbooks that start faster on average compared with those that start slower. Almost all create a remote session on the SCSM primary workflow server, and one of them is invoked by a Cireson PowerShell activity, while the others are invoked either by an SCSM workflow or a SMA RB activity. We have Log Verbose set on all runbooks because we are executing so few we aren't concerned about the associated DB growth.

However, I doubt any of that has an effect on the time to start; more likely the execution time.

Does anybody know how to speed this up?

Best Answers

  • Leigh_KildayLeigh_Kilday Member Ninja IT Monkey ✭✭✭✭
    Answer ✓
    The answer for us was to alter the sandbox values. As of this time I haven't been able to inspect the sandboxes to dig deeper, but we dramatically improved our time-to-start by running each runbook in its own sandbox.

    There are settings in the Orchestrator.Settings.Config under The values used to configure the Activator which I assume has something to do with the time-to-start, but I've not played around with those values yet.

Answers

  • Matt_MedleyMatt_Medley Member Advanced IT Monkey ✭✭✭
    Hey Leigh, are these runbook activities referencing any .NET libraries? 
  • Leigh_KildayLeigh_Kilday Member Ninja IT Monkey ✭✭✭✭
    Hi Matt, no not directly. We have built our own module to simplify the scripts in CPAs and SMA runbooks, but they're just over the top of SMLets and the native CMDLets.
  • Leigh_KildayLeigh_Kilday Member Ninja IT Monkey ✭✭✭✭
    Answer ✓
    The answer for us was to alter the sandbox values. As of this time I haven't been able to inspect the sandboxes to dig deeper, but we dramatically improved our time-to-start by running each runbook in its own sandbox.

    There are settings in the Orchestrator.Settings.Config under The values used to configure the Activator which I assume has something to do with the time-to-start, but I've not played around with those values yet.
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