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Re: /proc/sys/vm/bdflush



On Thu, 21 Nov 2002 11:15:13 +0100, "Ralf Hildebrandt"
<Ralf Hildebrandt charite de> said:
> Our current problem: Load is low, but ever so often the system decides
> to do some serious disk I/O which causes all processes to wait for
> disk I/O -- load explodes (rises linear up into the 20-30ies) just to
> fall linearly (spelling?) right after that.
> 
Are you using Cyrus? If so, what is your prefork set to in imapd.conf?

We saw what you're seeing, and tracked it down to Cyrus' scheduled event
handling in large prefork pools.





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