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RE: [grouper-users] gsh xmlimport memory usage

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  • From: Chris Hyzer <>
  • To: Colin Hudler <>
  • Cc: "" <>
  • Subject: RE: [grouper-users] gsh xmlimport memory usage
  • Date: Thu, 17 Dec 2009 16:48:48 -0500
  • Accept-language: en-US
  • Acceptlanguage: en-US

Is this a 32bit machine or 64? 2gig might be the max that Java can use.

We are planning to rewrite the import/export, and I hope to improve
performance in the rewrite. In the meantime, maybe if this is not a 64 bit
machine, you could try from another machine which is 64 bit. Or maybe you
could export twice and partition the stems so that you have two files (or
more) of half the size (or less). Kind of a pain I know, but just
brainstorming here.


-----Original Message-----
From: Colin Hudler

Sent: Thursday, December 17, 2009 10:18 AM

Subject: Re: [grouper-users] gsh xmlimport memory usage

The backup file is 256M. Memberships are 1507480, in 90908 groups. The
subject source is
edu.internet2.middleware.grouper.subj.GrouperJndiSourceAdapter, but
maybe I will change it and compare.

Tom Zeller wrote:
> What is the filesize of backup.xml ? How many memberships do you have ?
> I've been able to xmlimport with Xmx=1024m, and we have ~1 million
> memberships (select count(*) from grouper_memberships), and our xml
> export is ~175MB.
> What source adapters are you using ?
> This doesn't answer your question, of course.
> TomZ
> On Thu, Dec 17, 2009 at 9:00 AM, Colin Hudler
> <>
> wrote:
>> Hi,
>> Congrats on the fantastic new release, nice stuff. I am doing upgrade
>> rehearsals under Method 1,
>> "./bin/ -xmlimport GrouperSystem backup.xml"
>> But it always uses all of the memory. I increased it to 4GB, but it still
>> actually commits that much. Before moving on to method 2, I thought I'd
>> ask, is there anything I can do reduce it?
>> Obviously, this is the actual error:
>> java.lang.OutOfMemoryError: Java heap space

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