[Building Sakai] 2.9.1 Performance Issues
Curtis Van-Osch
curtis.van-osch at hec.ca
Wed Jul 24 08:25:47 PDT 2013
Thanks Sam and David,
I've integrated those patches, but upon inspecting a heap dump in
Eclipse MAT, it looks like our Delegated Access cache is filling the memory!
I've opened an issue in jira here:
https://jira.sakaiproject.org/browse/DAC-56
I'm hoping it's just a question of setting better ehcache settings...
Curtis
-------- Message original --------
Sujet: Re: [Building Sakai] 2.9.1 Performance Issues
De : David Horwitz <david.horwitz at uct.ac.za>
Pour : Sam Ottenhoff <ottenhoff at longsight.com>
Copie à : Curtis Van-Osch <curtis.van-osch at hec.ca>, sakai-dev Developers
<sakai-dev at collab.sakaiproject.org>
Date : 2013-07-24 04:54
> You might want to look at this fix too:
>
> https://jira.sakaiproject.org/browse/SAK-23524 (Roster)
>
> its a similar pattern to the GB one bellow and caused us some pain.
>
> D
>
> On Tue, 2013-07-23 at 16:56 -0400, Sam Ottenhoff wrote:
>> I haven't observed any issues that would explain gigantic memory
>> usage CPU spiked at 100%. I would try to get a heap dump into
>> Eclipse MAT as soon as possible.
>>
>>
>> --Sam
>>
>>
>> On Tue, Jul 23, 2013 at 4:53 PM, Curtis Van-Osch
>> <curtis.van-osch at hec.ca <mailto:curtis.van-osch at hec.ca>> wrote:
>>
>> Hello,
>> We at HEC Montréal recently upgraded to Sakai 2.9.1 (last
>> monday). Everything went well, but we have been experiencing
>> performance issues ever since. Memory usage hovers between 6.5
>> and 8 gigabytes, and CPU usage often spikes to 100%
>>
>> our JAVA_OPTS="-d64 -server -Xmx10g -Djava.awt.headless=true
>> -Xms512m -XX:MaxPermSize=768m -XX:PermSize=256m
>> -Duser.language=fr -Duser.region=CA"
>>
>> We're planning on inspecting a heap dump tomorrow morning, and
>> we're looking at applying this Gradebook patch
>> <https://jira.sakaiproject.org/browse/SAK-23385> (SAK-23385).
>>
>> Does anyone have any other ideas for diagnosing performance issues?
>>
>> --
>> <http://www.hec.ca>
>>
>> Curtis Van Osch Analyste-Programmeur Direction des technologies
>> de l'information
>> hec.ca <http://www.hec.ca>
>> Agréments 3000, chemin de la Côte‑Sainte‑Catherine,
>> Montréal (Québec) H3T 2A7 Téléphone : 514 340-6000, poste 2029
>>
>>
>>
>> recyclez Pensons à l'environnement avant d'imprimer
>>
>>
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--
<http://www.hec.ca>
Curtis Van Osch
Analyste-Programmeur
Direction des technologies de l'information
hec.ca <http://www.hec.ca>
Agréments
3000, chemin de la Côte‑Sainte‑Catherine, Montréal (Québec) H3T 2A7
Téléphone : 514 340-6000, poste 2029
recyclez
Pensons à l'environnement
avant d'imprimer
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