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From "James A. Robinson" <>
Subject Re: Storage Leak - How to analyse
Date Thu, 14 Apr 2016 13:16:13 GMT
You might see if you can get debugging output similar to what KahaDB offers:

I had a similar situation and the KahaDB debugging showed that the problem
due to un-acked persistent messages sprinkled throughout the older data
effectively forcing them to stay open and uncollected (one un-acked message
in a
file that might have dozens or hundreds of siblings was enough to force
to keep the file around).


On Thu, Apr 14, 2016 at 6:07 AM AlexanderMQ <> wrote:

> Hi,
> I have a fairly simple production installation running consisting of
> ActiveMQ 5.11.1 using levelDB. Everything configuration is kept like out of
> the box, only storeUsage limit is set to 20GB.
> Since a while I see storage leak, every day the reported store percentage
> used is raising by 4%, while number of messages in all queues is very low
> (<1000) and their size is 2k in average, topics are not used.
> A simple restart of ActiveMQ fixes the problem.
> ActiveMQ log shows only compacting leveldb index every 10s. I'm using a JDK
> 1.8u51 32 Bit.
> What is the best approach to tackle this?
> Alex
> --
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