Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?

[Richard W.M. Jones]

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.

-- 
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