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From Dave Colasurdo <davec...@earthlink.net>
Subject Re: Geronimo disk footprint growth at startup
Date Fri, 19 Aug 2005 00:50:17 GMT
Hiram Chirino wrote:

> 
> By default we use 2 x 20 meg journal files.
> The logs need to hold a good working set of the in flight persistent  
> messages that are flowing through the system.  It's optimum if  message 
> that was written to the log file is held long enough so that  ack for 
> that message can be written to the log file (basically before  we 
> checkpoint the message to the jdbc store).  that allows us to  avoid 
> moving most of the messages that are flowing through the system  to jdbc 
> which is quite slow by comparison.
> 
> And since activemq supports moving allot of msg/sec and the message  can 
> be quite large, 2 x 20 meg log files is a quite conservative  setting.  
> Now if your not using JMS at all, I would guess that's too  much!
> 

Any chance of changing this behavior such that the the 40M growth is 
only incurred when JMS is actually being used (i.e. lazy creation of the 
logs based on the first JMS use)?

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