[Building Sakai] How much RAM for small installation?

[Bryan Bakotich]

Thanks for the suggestions!

I just got the instance up and running this weekend. Once we get some users
in the system and have a normal load on it I will post back with the tweaked
jvm settings.

-Bryan

On Mon, Oct 11, 2010 at 2:55 AM, Gilgamesh Nootebos <G.Nootebos at uva.nl>wrote:

> Hi Bryan,
>
> Run your desired setup but with lots of RAM and check how much is used,
> don't forget to tweak it to as low as you dare to go.
>
> to Really fine tune the settings you have to find out about:
> - how many threads you want to run. each thread has it's own stack.
> - 32 or 64bit. Objects are bigger on 64bit.
> - PermGen and CodeCache are outside the heap
>
> See http://stackoverflow.com/questions/3646483/java-memory-usage-on-linux for
> a little bit more detail.
>
> Kind regards,
> Gilgamesh Nootebos
> _____
>
> *Universiteit van Amsterdam
> *Informatiseringscentrum - Onderwijs- & Onderzoeksdienstengroep
>
> Gilgamesh Nootebos
> *Java Ontwikkelaar
> *
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>
>
> On Fri, Oct 8, 2010 at 06:00, Matthew Jones <jonespm at umich.edu> wrote:
>
>> On our dev server (Custom 2.6) with a max of about 10-20 people hitting
>> it, I've never had a running okay with about 1.5gig of ram. This has a lot
>> of contrib tools though and I really don't know how low it could go. If you
>> use something like the cafe build [1] [2] and only include the tools you
>> need (or just remove some you don't), you could probably get by with under a
>> gigabyte. Sakai, for sure, loves memory though.
>>
>> (dev server settings)
>> /usr/local/jdk/bin/java -server -Xms1500m -Xmx1500m -XX:NewSize=400m
>> -XX:MaxNewSize=400m -XX:PermSize=256m -XX:MaxPermSize=256m
>>
>> [1] https://source.sakaiproject.org/svn/cafe/
>> [2] http://confluence.sakaiproject.org/display/BOOT/Programmer's+Cafe<http://confluence.sakaiproject.org/display/BOOT/Programmer%27s+Cafe>
>>
>> On Thu, Oct 7, 2010 at 10:07 PM, Anand Mehta <anand.mehta at yahoo.com>wrote:
>>
>>> I'd suggest at least -Xmx2048m -XX:MaxPermSize=512m to avoid any
>>> performance issues.
>>>
>>> Thanks,
>>> Anand
>>>
>>>
>>> ------------------------------
>>> *From:* Bryan Bakotich <bakotibj at plu.edu>
>>> *To:* sakai-dev at collab.sakaiproject.org
>>> *Sent:* Thu, October 7, 2010 8:59:34 PM
>>> *Subject:* [Building Sakai] How much RAM for small installation?
>>>
>>> Hi all,
>>>
>>> I'm setting Sakai up for a non-profit that estimates they will only have
>>> about 40-50 users. How much RAM do you think an installation that small
>>> would need? Do you think it would need much more than the recommended for a
>>> dev server (-Xms512m -Xmx1024m)?
>>>
>>> I am setting it up on a server from their hosting service where the
>>> monthly fee goes up depending on how much RAM you need. Trying to keep it as
>>> low as possible. Thanks for any insight.
>>>
>>> I will be installing 2.7.x using a MySQL db on Debian OS if that makes
>>> any difference.
>>>
>>> -Bryan
>>>
>>> --
>>> Bryan Bakotich
>>> Open Source Implementation Specialist
>>> Digital Media Center, Information & Technology Services
>>> Pacific Lutheran University
>>> Tacoma, WA 98447-0013
>>> Phone: 253-536-5021
>>>
>>>
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>>
>>
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>
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-- 
Bryan Bakotich
Open Source Implementation Specialist
Digital Media Center, Information & Technology Services
Pacific Lutheran University
Tacoma, WA 98447-0013
Phone: 253-536-5021
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