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From fredrikjonson <...@git.apache.org>
Subject [GitHub] activemq-artemis pull request: Change on buffer timeout...
Date Mon, 29 Jun 2015 06:47:30 GMT
Github user fredrikjonson commented on the pull request:

    https://github.com/apache/activemq-artemis/pull/54#issuecomment-116482583
  
    I'm curious, could you share how you are running the p/c-tool to compare between amq5
and aremis? And how would one determine where the cause of the observed performance difference
is located?
    
    It seems to me that the current default values for journal-buffer-timeout would theoretically
allow a worst case latency for lingering packages of 3,3 ms on NIO, and 0.5 ms on AIO. (Right?)
That is not bad at all, and quite far away from the 1-2 seconds you're reporting (per 1000
msg). Especially for a throughput test where the transfer pattern - many messages at once
with little to no delay between them - really should be a perfect match for buffered disk
IO.


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