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From Patrik Nordwall <patrik.nordw...@gmail.com>
Subject Re: Performance of persistent messages
Date Tue, 13 Oct 2009 09:28:58 GMT

I think (hope) I have found the root of problem.
I found a test program in SonicMQ documentation:
http://communities.progress.com/pcom/servlet/JiveServlet/download/10720-3-10090/mq_tuning_76.pdf

It tests performance of  RandomAccessFile.getFD().sync()
Is that relevant for ActiveMQ persistence performance?

When running this on the test server I got 145 syncs/second. It should be
mid-range SAN, but it must be something wrong with it.
I tested on high-end SAN and got 2300 syncs/second.

/Patrik
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