From: Andrew Theurer <habanero@us.ibm.com>
To: Anthony Liguori <aliguori@us.ibm.com>
Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>,
Jerone Young <jyoung5@us.ibm.com>,
xen-devel <xen-devel@lists.sourceforge.net>,
ian.pratt@cl.cam.ac.uk
Subject: Re: Calculating real cpu usage of Xen domains correctly!
Date: Wed, 23 Feb 2005 20:10:38 -0600 [thread overview]
Message-ID: <421D379E.9060602@us.ibm.com> (raw)
In-Reply-To: <421D27B4.3080503@us.ibm.com>
Anthony Liguori wrote:
> Ian Pratt wrote:
>
>> Rather than trying to come up with metrics like this, I'd rather have
>> vm-top show the percentage of a physical CPU that each domain used,
>> independent of it's allocation.
>> i.e. total including the idle domain will be #CPUS x 100%.
>>
>>
>>
> Right, that's exactly what we want to do. How does one get that
> information? We thought that xc_domain_get_cpu_usage() would provide
> that information but it doesn't appear too.
(Caution: I have not even looked at this code and am ready to insert
foot in mouth) Can you derive this based on a delta of time stamps,
those timestamps correlating to times when the xen scheduler granted a
domain's virtual cpu a physical cpu and when it was removed from a
physical cpu?
-Andrew Theurer
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next prev parent reply other threads:[~2005-02-24 2:10 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-02-24 0:48 Calculating real cpu usage of Xen domains correctly! Ian Pratt
2005-02-24 1:02 ` Anthony Liguori
2005-02-24 2:10 ` Andrew Theurer [this message]
2005-02-25 2:25 ` Matt Ayres
2005-02-25 2:38 ` Anthony Liguori
2005-02-25 16:44 ` Rob Gardner
2005-02-25 17:10 ` Anthony Liguori
2005-02-25 21:35 ` Calculating real cpu usage of Xen domains correctly! (PATCH) Rob Gardner
-- strict thread matches above, loose matches on Subject: below --
2005-02-24 2:37 Calculating real cpu usage of Xen domains correctly! Ian Pratt
2005-02-24 3:10 ` Anthony Liguori
2005-02-24 13:56 ` John L Griffin
2005-02-24 20:43 ` Anthony Liguori
2005-02-24 21:46 ` John L Griffin
2005-02-24 22:02 ` Keir Fraser
2005-02-24 23:01 ` Anthony Liguori
2005-02-25 3:53 ` John L Griffin
2005-02-25 10:31 ` Stephan Diestelhorst
2005-02-25 10:38 ` Stephan Diestelhorst
2005-02-23 23:29 Jerone Young
2005-02-23 23:44 ` Anthony Liguori
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