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From Christian Posta <christian.po...@gmail.com>
Subject Re: SystemUsage questions
Date Fri, 25 Jan 2013 11:58:07 GMT
To add:

scheduled messages don't use their own store. they are currently unbounded,
but this has been resolved here:
https://issues.apache.org/jira/browse/AMQ-4068


On Fri, Jan 25, 2013 at 4:24 AM, Gary Tully <gary.tully@gmail.com> wrote:

> the defaults increased for 5.7 and there are additional warnings but i
> think there is still some room for improvement. maybe peek at a 5.8 snap.
>
> also, pending messages in a transaction do now respect the limits.
>
>
> On 25 January 2013 08:20, SuoNayi <suonayi2006@163.com> wrote:
>
> > Hi, I know that SystemUsage is used to control memory usage(to cache
> > messages) ,
> > disk space usage for messages storage in the broker and we can allocate
> > memory
> > usage for each destination while others can not be assigned
> independently.
> > I just noticed that there is no SystemUsage section present but the
> memory
> > usage limit is enabled for queues in activemq.xml on my production
> brokers.
> > In this case broker will create a default SystemUsage with 64M memory
> usage
> > limit.But the memory usage limit for queues is 512M, and that's bigger
> > than the
> > memory usage limit of the broker.So in fact the memory usage limit for
> > queues
> > is only 64M rather than 512M and I do expect there are some warning/error
> > logs
> > to indicate unreasonable configuration but not.If there are no jiras
> about
> > the
> > problem should I raise one now?
> >
> >
> > By the way,Does the temp store for non-persistent messages, pending
> > transactional
> > messages and schedule messages respect the limit of SystemUsage?
> > I know that pending transactional  messages are kept in memory can cause
> > OOM and
> > later release will save them into the temp store.Is it implemented since
> > 5.6?
> >
> >
> > Thanks,
> > SuoNayi
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
>
> --
> http://redhat.com
> http://blog.garytully.com
>



-- 
*Christian Posta*
http://www.christianposta.com/blog
twitter: @christianposta

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