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From Rob Davies <rajdav...@gmail.com>
Subject Re: OOM with high KahaDB index time
Date Fri, 12 Feb 2010 18:57:34 GMT
could you provide a test case ?

cheers,

Rob
On 11 Feb 2010, at 21:41, rideallday wrote:

>
> Umm, actually I'm still seeing issues with high Index times for  
> topics.
>
> My test case is:
>
> Send a huge amount of messages into the broker. Let several hundred  
> thousand
> accumulate. Then start consumers and see how long it takes to drain  
> the
> queues and topics.
>
> The result is:
>
> For queues- excellent. Performance is amazing. A few 1000ms Journal  
> append
> messages, but recovery performance exceeds my requirements.
> For topics- Index updates in the 2-700ms range. This happens every  
> second or
> so and locks the consumer, so recovery is extremely slow.
>
> This is very similar behaviour to what I saw with Topics and Queues  
> before
> Rob applied the fix for cursors in KahaDB.
>
> Is it possible that the fix needs to be also applied to topics?
>
> I'm using 5.4 snapshot from Feb 1.
> -- 
> View this message in context: http://old.nabble.com/OOM-with-high-KahaDB-index-time-tp27217704p27555173.html
> Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>

Rob Davies
http://twitter.com/rajdavies
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