linux-kernel - Re: Few interrupts with NO

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Message-id: <46B7AD4C.1020806@shaw.ca>
Date:	Mon, 06 Aug 2007 17:22:52 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Few interrupts with NO_HZ

Jan Engelhardt wrote:
> Hi,
> 
> 
> this more of an informational question. So:
> 
> kernel version is 2.6.22.1 on i686
> 
> /proc/uptime 
> 9917.81 9140.90 (2h45m)
> 
> /proc/cpuinfo:
>            CPU0
>   0:        282   IO-APIC-edge      timer
> 
> this is kinda neat, I expected much more interrupts than just 282 since 
> boot. What kernel code actually uses the irq0 timer?

The kernel likely switched to using the local APIC timer after bootup..

-- 
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@...pamshaw.ca
Home Page: http://www.roberthancock.com/

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