[jadmin] Re: JAVA MEMORY

[Gaston Dombiak]

Hey Gln,

Hmm, I've been running Openfire (formerly Wildfire) with 54K concurrent users 
and the server was only consuming 1GB. Each user had between 20-40 contacts 
in his roster. All users had a vCard with an avatar. As Alexander said, you 
should be totally fine with 300 users even with 256MB. 

Percentage of memory going up is not uncommon in Java since the Garbage Collector 
may decide to perform a full GC once you are running low on memory. Anyway, 
you should not be reaching 100% with only 300 users even if they are generating 
lots of traffic. Running out of memory means that there is a memory leak 
somwhere in your setup. So my question is which plugins are you running? 

BTW, I'm not monitoring this mailing list as frequent as our support forums. 
To get a faster response please post your questions to: http://www.igniterealtime.org/forum/forum.jspa?forumID=40

Regards,

  -- Gato

> hi, i have a somewhat similar problem. we have about 300 users and
> about 2gb of ram, i've allocated 1gb of ram for java memory and about
> 85% of it is being used. is this normal? isn't it too big? also,
> before i increased the java memory allocation from 256mb to 1gb, the
> server hangs up almost everyday because it was reaching 100%
> utilization of the allocated size. now, it doesn't hang up that often
> but it still hangs up about once a week. thanks.
> 
> ----- Original Message -----
>> From: "Matt Tucker" <matt at jivesoftware.com>
>> To: "Jabber server administration list" <jadmin at jabber.org>
>> Sent: Thursday, March 08, 2007 10:48 AM
>> Subject: RE: [jadmin] JAVA MEMORY
>> Thomas,
>> 
>> 256 MB of RAM isn't a lot for a server machine. :) How many users do
>> you have? If it's not that many, most likely Java is just using up
>> that much memory until it's next garbage collection.
>> 
>> Regards,
>> Matt
>> -----Original Message-----
>> From: jadmin-bounces at jabber.org
>> [mailto:jadmin-bounces at jabber.org] On Behalf Of Thomás
>> Sent: Thursday, March 08, 2007 6:59 AM
>> To: jadmin at jabber.org
>> Subject: [jadmin] JAVA MEMORY
>> 90.5% of my java memory is being used in wildfire .. What does it
>> mean ? Is this normal ?? how to decrease this use of memory ??
>> 
>> I've got 256 of Ram and enough space in my HD.
>> 
>> Tks
>> 
>> --
>> Antonio Thomás M. K. Oliveira
>> Analista de Sistema - Prefeitura Municipal de Itajubá
>> http://www.itajuba.mg.gov.br Tel. (35) 3692.1731
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