From: Srivatsa Vaddagiri <vatsa@in.ibm.com>
To: Alec Istomin <alec@openvz.org>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: vCPU scalability for linux VMs
Date: Thu, 6 May 2010 11:23:55 +0530 [thread overview]
Message-ID: <20100506055355.GB6251@linux.vnet.ibm.com> (raw)
In-Reply-To: <1085378510.20100505123111@istomin.de>
On Wed, May 05, 2010 at 12:31:11PM -0700, Alec Istomin wrote:
>
> On Wednesday, May 5, 2010 at 13:27:39 -0400, Srivatsa Vaddagiri wrote:
> >> My preliminary results show that single vCPU Linux VMs perform up to 10
> >> times better than 4vCPU Linux VMs (consolidated performance of 8 VMs on
> >> 8 core pre-Nehalem server). I suspect that I'm missing something major
> >> and look for any means that can help improve SMP VMs performance.
>
> > Could you provide more details of what workload was used to compare this
> > performance?
>
> It's Dell's DVD-Store LAMP stack test suite with Medium database (about
> 1 GB MySQL data) . 8x 2Gb VMs (on 16GB RAM host) with different vCPU
> configuration simultaneously loaded by external web clients.
Ok ..Do you have any more data on how the vCPU scalability looks like (how
the throughput scales with increasing vCPUs)?
- vatsa
next prev parent reply other threads:[~2010-05-06 5:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-05 1:45 vCPU scalability for linux VMs Alec Istomin
2010-05-05 8:43 ` Avi Kivity
2010-05-05 16:56 ` Alec Istomin
[not found] ` <AANLkTinDKDV3vwLiZzmMC6C4cjOnXT1H-joJ4rcR3vgA@mail.gmail.com>
2010-05-05 17:27 ` Fwd: " Srivatsa Vaddagiri
2010-05-05 19:31 ` Alec Istomin
2010-05-06 5:53 ` Srivatsa Vaddagiri [this message]
2010-05-06 7:58 ` Alec Istomin
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