On 05/17/2011 07:45 AM, Andrey Vorobiev wrote:

2011-05-17 18:55:51 NOVST LOG: checkpoint starting: xlog
2011-05-17 18:57:20 NOVST LOG: checkpoint complete: wrote 62861 buffers
(24.0%); 0 transaction log file(s) added, 0 removed, 0 recycled;
write=89.196 s, sync=0.029 s, total=89.242 s

Increase your checkpoint_segments. If you see "checkpoint starting: xlog" instead of "checkpoint starting: time", you don't have enough checkpoint segments to handle your writes. Checkpoints *will* degrade your throughput.

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Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 800 | Chicago IL, 60604
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stho...@peak6.com

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