linux-kernel - Re: top displaying 9999% CPU usage

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Message-ID:  <4703932C.6060900@ums.usu.ru>
Date:	Wed, 03 Oct 2007 19:03:40 +0600
From:	"Alexander E. Patrakov" <patrakov@....usu.ru>
To:	linux-kernel@...r.kernel.org
Cc:	elendil@...net.nl
Subject:  Re: top displaying 9999% CPU usage

Frans Pop wrote:
> I saw top occasionally displaying 9999% CPU usage for a process. The
> first few times it was amarokapp, this last time it was kontact.
> Both applications were basically idle.
> The "cc1" is a kernel compile (rc9 + CFS :-).
> 
> I cannot remember seeing this before, but as I also don't run top that
> frequently I cannot be sure its a recent regression.

Try to capture the i/o log with the following command:

strace -o top.log top

This will show for sure whether the kernel gives out incorrect data or 
top misinterprets them.

-- 
Alexander E. Patrakov

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