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[grouper-users] PSP speed issues

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  • From: Philip Harle <>
  • To: "" <>
  • Subject: [grouper-users] PSP speed issues
  • Date: Tue, 6 Sep 2016 13:02:03 +0000
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Last year we migrated (via a fresh install) our instance of Grouper to
version 2.2.2. Since then we have experienced a significant degradation
around the speed of provisioning with the PSP. We've been using the PSP to
incrementally provision groups since the upgrade, and accepted the reduced

However, as we've recently loaded all student data for our new academic year
into Grouper, the PSP has been working through over a quarter of a million
changes. This is taking between 1 and 4 seconds for each change, and we're
estimating that this could take anywhere up to 2 weeks to work through all
the changes. The server itself isn't stressed and is showing low CPU and RAM
usage. I've attached a small snippet of the grouper_error.log showing the
groups currently being provisioned. Some of these are being published to our
Active Directory, others are Grouper-only.

We're aware of performance issues with the PSP and the advice to upgrade to
PSPNG in 2.3, unfortunately this isn't feasible for us at the moment. Hence,
are there any configuration settings we should investigate/change in an
effort to give some improved performance with the current PSP in the meantime?


Phil Harle
IT Service
Newcastle University

Attachment: grouper_error.log
Description: grouper_error.log

  • [grouper-users] PSP speed issues, Philip Harle, 09/06/2016

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