From: Alex Williamson <alex.williamson@redhat.com>
To: Chegu Vinod <chegu_vinod@hp.com>
Cc: kvm@vger.kernel.org
Subject: Re: Large sized guest taking for ever to boot...
Date: Fri, 08 Jun 2012 10:46:06 -0600 [thread overview]
Message-ID: <1339173966.26976.95.camel@ul30vt> (raw)
In-Reply-To: <loom.20120608T181832-528@post.gmane.org>
On Fri, 2012-06-08 at 16:29 +0000, Chegu Vinod wrote:
> Hello,
>
> I picked up a recent version of the qemu (1.0.92 with some fixes) and tried it
> on x86_64 server (with host and the guest running 3.4.1 kernel).
>
> While trying to boot a large guest (80 vcpus + 512GB) I observed that the guest
> took for ever to boot up... ~1 hr or even more. [This wasn't the case when I
> was using RHEL 6.x related bits]
Was either case using device assignment? Device assignment will map and
pin each page of guest memory before startup, which can be a noticeable
pause on smallish (<16GB) guests. That should be linear scaling though
and if you're using qemu and not qemu-kvm, not related. Thanks,
Alex
next prev parent reply other threads:[~2012-06-08 16:46 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-08 16:29 Large sized guest taking for ever to boot Chegu Vinod
2012-06-08 16:46 ` Alex Williamson [this message]
2012-06-08 17:10 ` Chegu Vinod
2012-06-08 17:42 ` Alex Williamson
2012-06-08 17:57 ` Chegu Vinod
2012-06-08 18:08 ` Jan Kiszka
2012-06-08 18:08 ` [Qemu-devel] " Jan Kiszka
2012-06-08 18:20 ` Chegu Vinod
2012-06-08 18:20 ` [Qemu-devel] " Chegu Vinod
2012-06-08 18:37 ` Jan Kiszka
2012-06-08 18:37 ` [Qemu-devel] " Jan Kiszka
2012-06-12 15:33 ` Chegu Vinod
2012-06-12 15:33 ` [Qemu-devel] " Chegu Vinod
2012-06-12 15:39 ` Gleb Natapov
2012-06-12 15:39 ` [Qemu-devel] " Gleb Natapov
2012-06-12 18:44 ` Chegu Vinod
2012-06-12 18:44 ` [Qemu-devel] " Chegu Vinod
2012-06-13 7:12 ` Gleb Natapov
2012-06-13 7:12 ` [Qemu-devel] " Gleb Natapov
2012-06-13 8:14 ` Avi Kivity
2012-06-13 8:14 ` [Qemu-devel] " Avi Kivity
2012-06-10 9:30 ` Gleb Natapov
2012-06-10 9:30 ` [Qemu-devel] " Gleb Natapov
2012-06-10 13:29 ` Chegu Vinod
2012-06-10 13:29 ` [Qemu-devel] " Chegu Vinod
2012-06-08 17:51 ` Chegu Vinod
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