On Sun, 18 Jan 2009, Rainer Gerhards wrote: > On Sat, 2009-01-17 at 16:55 -0800, [email protected] wrote: > >> >> what I think that you are seeing is that the default rsyslog memory queue >> only uses as much ram as it needs to hold the data (even though it's >> described as a array it seems to grow dynamicly, I'm not sure about it >> shrinking) > > If you use "fixedarray" mode, the pointer array is allocated statically, > no matter how many messages are in the queue. HOWEVER, this is only the > pointers, so quite few memory. Actual messages are dynamically allocated > and freed when processed - in any mode.
that makes sense. It would be interesting to see what would happen to the enqueue/dequeue timings if the message memory was staticly allocated from what I remember seeing of the memory footprint it does appear as if you allocate the max size for the message each time, not the minimum sized needed to hold the message if that shows a noticable difference it may be worth allocating the memory in chunks substantially larger than a single message David Lang _______________________________________________ rsyslog mailing list http://lists.adiscon.net/mailman/listinfo/rsyslog http://www.rsyslog.com
