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Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2
From: |
Richard W.M. Jones |
Subject: |
Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35? |
Date: |
Tue, 3 Aug 2010 17:56:19 +0100 |
User-agent: |
Mutt/1.5.20 (2009-12-10) |
On Tue, Aug 03, 2010 at 07:44:49PM +0300, Avi Kivity wrote:
> On 08/03/2010 07:28 PM, Richard W.M. Jones wrote:
> >I have posted a small patch which makes this 650x faster without
> >appreciable complication.
>
> It doesn't appear to support live migration, or hiding the feature
> for -M older.
AFAICT live migration should still work (even assuming someone live
migrates a domain during early boot, which seems pretty unlikely ...)
Maybe you mean live migration of the dma_* global variables? I can
fix that.
> It's not a good path to follow. Tomorrow we'll need to load 300MB
> initrds and we'll have to rework this yet again.
Not a very good straw man ... The patch would take ~300ms instead
of ~115ms, versus something like 2 mins 40 seconds with the current
method.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, (continued)
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Kevin O'Connor, 2010/08/04
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Gleb Natapov, 2010/08/05
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Anthony Liguori, 2010/08/03
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Avi Kivity, 2010/08/03
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Richard W.M. Jones, 2010/08/03
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Avi Kivity, 2010/08/03
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?,
Richard W.M. Jones <=
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Avi Kivity, 2010/08/03
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Anthony Liguori, 2010/08/03
- Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?, Richard W.M. Jones, 2010/08/03