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Re: [Xen-devel] Re: [Xen-users] About profiling xen

from [Jeremy Fitzhardinge] [Permanent Link][Original]
To: Marco Tizzoni <marco.tizzoni@xxxxxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] About profiling xen
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Wed, 30 Sep 2009 16:19:03 -0700
Cc: "Fajar A." <fajar@xxxxxxxxx>, Fasiha Ashraf <feehapk@xxxxxxxxxxx>, xen <xen-devel@xxxxxxxxxxxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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On 09/30/09 00:45, Marco Tizzoni wrote:
> On Wed, Sep 30, 2009 at 8:40 AM, Marco Tizzoni <marco.tizzoni@xxxxxxxxx> 
> wrote:
>   
>> On Wed, Sep 30, 2009 at 8:37 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
>>     
>>> 250 per second.. sounds like kernel HZ value?
>>>       
>> Yes, infact I'm going to test it with 1000Khz. Stay tuned.
>>     
> Building dom0 kernel with 1000hz the rate reach 1k. Ok, one point. Then?
> Why this behaviour occurs only on xenolinux?
>   

Which kernel are you using?  Do you have:

CONFIG_NO_HZ=y
CONFIG_HIGH_RES_TIMERS=y

configured?

    J

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