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Memory requirements for installing ZenPacks

Subject:	Memory requirements for installing ZenPacks
Author:	Luke Lofgren
Posted:	2017-06-27 08:47

I've spent the last week(!) trying to install the Impact ZenPack (using the specialized instructions) in a NON-Production environment that has a restore of our production environment. We're doing 5.2.4, and have about 10k devices. Unfortunately the ZenPack installation appears to need 14+ GB of memory to run the process to update things so that the initial set of needed information is available. I say 14+ GB because that's the most I've been able to provide so far. I'm going to bring in a 48 GB VM just to execute the update process, but this post is mostly to ask that ZenPack creators consider how they design memory usage for implementation when there are 1000's of devices and 100,000's of objects, and potentially 1,000,000's of relationships already in a system. This also bodes to how feasible it will be if we have to rebuild all that at some point.

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Luke Lofgren
Infrastructure Architect
Acxiom Corporation (home based associate)
Waterford PA
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Subject:	RE: Memory requirements for installing ZenPacks
Author:	Luke Lofgren
Posted:	2017-06-27 16:37

19 GB is apparently how much memory the "specialized" method of running the Impact initial update required -- and it was in a "fast" final step as well that it ballooned to that:
2017-06-27 20:08:53,422 INFO zen.ImpactGraphReset: Checking for nodes only in Impact
[========================================|] 100% complete (859834/859834 = Unknown per minute)
2017-06-27 20:33:29,687 INFO zen.ImpactGraph: No nodes deleted.

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