Date: Thu, 15 Jan 2004 01:12:24 +0100
From: Haakon Riiser <hakonrk@ulrik.uio.no>
To: linux-kernel@vger.kernel.org
Subject: Re: Busy-wait delay in qmail 1.03 after upgrading to Linux 2.6
Message-ID: <20040115001224.GA1018@s.chello.no>
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[Giuliano Pochini]

> 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.

Just recompiled it, and it made no difference -- it still reports
100% CPU usage while doing disk I/O.

-- 
 Haakon
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