linux-kernel - Re: msleep() an load average

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Message-ID: <4DC1568B.2080004@gmail.com>
Date:	Wed, 04 May 2011 15:37:15 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	"Eibach, Dirk" <Eibach@...ys.de>
CC:	linux-kernel@...r.kernel.org
Subject: Re: msleep() an load average

On 05/04/2011 02:11 PM, Eibach, Dirk wrote:
> while(1) msleep_interruptible(1000);
> 
> I appreciate their admiration, but still there are doubts in my mind: Is
> this code really any better?

Try to send it a signal, it will eat 100% of CPU without sleeping.

> Is the loadavg metric broken beyond repair?

No, this is expected behaviour. Uninterruptible sleeps count as I/O load.

regards,
-- 
js
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