linux-kernel - Re: [RFC PATCH 0/4] Gang scheduling in CFS

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Message-ID: <4EF99532.3010803@redhat.com>
Date:	Tue, 27 Dec 2011 11:51:46 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Nikunj A Dadhania <nikunj@...ux.vnet.ibm.com>
CC:	Ingo Molnar <mingo@...e.hu>, peterz@...radead.org,
	linux-kernel@...r.kernel.org, vatsa@...ux.vnet.ibm.com,
	bharata@...ux.vnet.ibm.com
Subject: Re: [RFC PATCH 0/4] Gang scheduling in CFS

On 12/27/2011 11:44 AM, Nikunj A Dadhania wrote:
> > > I am seeing a drop of ~44% when setting yield_on_hlt = 0
> > >
> > 
> > A drop of 44% of what?
> > 
> records/sec
>
> Ebizzy - 2VM running in parallel, both having gang scheduling enabled.
>
>                     yield_on_hlt=1         yield_on_hlt=0
>  EbzyRecords/sec      41955.50               23285.00            -44 
>
>

Interesting, are you overcommitting vcpus?

-- 
error compiling committee.c: too many arguments to function

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