Re: Busy-wait delay in qmail 1.03 after upgrading to Linux 2.6

From: Giuliano Pochini
Date: Wed Jan 14 2004 - 05:29:29 EST




On Wed, 14 Jan 2004, Haakon Riiser wrote:
> For example, another problem I encountered while
> upgrading to 2.6 was that disk intensive jobs, such as updating
> the slocate database, made ascpu report 100% CPU usage. I just
> ran top (procps 2.0.16) beside it, and it reported approximately
> 10% CPU usage, which is no more than 2.4 used.

It makes sense, since HZ is 10 times higher in 2.6. Did you
recompile ascpu ? Check if ascpu assumes HZ is 100. In that
case it may overstimate the cpu time by a factor 10.


--
Giuliano.
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