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From Christian Posta <christian.po...@gmail.com>
Subject Re: SystemUsage questions
Date Fri, 25 Jan 2013 12:07:46 GMT
Sorry, i mean to say "scheduled messagaes do use their own store, not temp
store"


On Fri, Jan 25, 2013 at 4:58 AM, Christian Posta
<christian.posta@gmail.com>wrote:

> 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
>



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

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