From: Michael Wolf <mjw@linux.vnet.ibm.com>
To: Rik van Riel <riel@redhat.com>
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
peterz@infradead.org, mtosatti@redhat.com, glommer@parallels.com,
mingo@redhat.com, avi@redhat.com, anthony@codemonkey.ws
Subject: Re: [PATCH RFC V2 0/5] Separate consigned (expected steal) from steal time.
Date: Mon, 26 Nov 2012 14:00:51 -0600 [thread overview]
Message-ID: <50B3CA73.5090205@linux.vnet.ibm.com> (raw)
In-Reply-To: <50856760.2030507@redhat.com>
On 10/22/2012 10:33 AM, Rik van Riel wrote:
> On 10/16/2012 10:23 PM, Michael Wolf wrote:
>> In the case of where you have a system that is running in a
>> capped or overcommitted environment the user may see steal time
>> being reported in accounting tools such as top or vmstat. This can
>> cause confusion for the end user.
>
> How do s390 and Power systems deal with reporting that kind
> of information?
>
> IMHO it would be good to see what those do, so we do not end
> up re-inventing the wheel, and confusing admins with yet another
> way of reporting the information...
>
Sorry for the delay in the response. I'm assuming you are asking about
s390 and Power lpars.
In the case of lpar on POWER systems they simply report steal time and
do not alter it in any way.
They do however report how much processor is assigned to the partition
and that information is
in /proc/ppc64/lparcfg.
Mike
prev parent reply other threads:[~2012-11-26 20:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 2:23 [PATCH RFC V2 0/5] Separate consigned (expected steal) from steal time Michael Wolf
2012-10-17 2:24 ` [PATCH RFC V2 1/5] Alter the amount of steal time reported by the guest Michael Wolf
2012-10-17 2:24 ` [PATCH RFC V2 2/5] Expand the steal time msr to also contain the consigned time Michael Wolf
2012-10-17 2:24 ` [PATCH RFC V2 3/5] Add the code to send the consigned time from the host to the guest Michael Wolf
2012-10-17 2:24 ` [PATCH RFC V2 4/5] Add a timer to allow the separation of consigned from steal time Michael Wolf
2012-10-17 2:24 ` [PATCH RFC V2 5/5] Add an ioctl to communicate the consign limit to the host Michael Wolf
2012-10-17 17:14 ` [PATCH RFC V2 0/5] Separate consigned (expected steal) from steal time Glauber Costa
2012-10-17 15:13 ` Michael Wolf
2012-10-22 15:33 ` Rik van Riel
2012-11-26 20:00 ` Michael Wolf [this message]
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