From: Jes Sorensen <jes@sgi.com>
To: Avi Kivity <avi@redhat.com>
Cc: Erik Jacobson <erikj@sgi.com>,
Mark McLoughlin <markmc@redhat.com>,
kvm@vger.kernel.org
Subject: Re: slow guest performance with build load, looking for ideas
Date: Thu, 16 Jul 2009 14:20:17 +0200 [thread overview]
Message-ID: <4A5F1B01.1010803@sgi.com> (raw)
In-Reply-To: <4A59A0FA.4010408@redhat.com>
On 07/12/2009 10:38 AM, Avi Kivity wrote:
> On 07/09/2009 09:01 PM, Erik Jacobson wrote:
>> Test runs after make clean...
>> time (make -j12&& make -j12 modules)
>>
>> real 10m25.585s
>> user 26m36.450s
>> sys 8m14.776s
>>
>> 2nd trial (make clean followed by the same test again.
>> real 9m21.626s
>> user 26m42.144s
>> sys 8m14.532s
>
> That's a scaling of 3.7, still pretty far from the host and even farther
> than my results.
>
> Is the numa factor of this machine larger than usual?
I didn't see a reply to this one, so I will just add what I know.
I believe Erik ran the tests on what we sell as an XE270 system. It's
really just a standard Intel or Supermicro motherboard in a box that
has been painted purple (or blue/green now I guess), so it really
shouldn't have extra numa factors compared to other Nehalem systems.
Cheers,
Jes
next prev parent reply other threads:[~2009-07-16 12:20 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-12 21:04 slow guest performance with build load, looking for ideas Erik Jacobson
2009-06-14 9:33 ` Avi Kivity
2009-06-15 14:15 ` Erik Jacobson
2009-06-15 14:24 ` Avi Kivity
2009-06-15 15:25 ` Michael Tokarev
2009-06-15 15:27 ` Avi Kivity
2009-06-16 7:03 ` Michael Tokarev
2009-06-16 8:07 ` Avi Kivity
2009-06-18 23:07 ` Erik Jacobson
2009-06-28 14:17 ` Avi Kivity
2009-06-28 19:05 ` Erik Jacobson
2009-06-28 21:28 ` Avi Kivity
2009-07-01 21:41 ` Erik Jacobson
2009-07-02 5:48 ` Avi Kivity
2009-07-02 9:41 ` Avi Kivity
2009-07-03 15:43 ` Mark McLoughlin
2009-07-03 16:28 ` Erik Jacobson
2009-07-09 2:36 ` Erik Jacobson
2009-07-09 7:48 ` Avi Kivity
2009-07-09 18:01 ` Erik Jacobson
2009-07-12 8:38 ` Avi Kivity
2009-07-16 12:20 ` Jes Sorensen [this message]
2009-07-25 14:33 ` Avi Kivity
2009-07-03 10:41 ` Matty
2009-07-05 8:07 ` Avi Kivity
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