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Re: [Xen-devel] about hot plug issue

To: "Yu, Ping Y" <ping.y.yu@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] about hot plug issue
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 26 Sep 2006 11:41:59 +0100
Cc: sos22@xxxxxxxxx, Steven Hand <steven.hand@xxxxxxxxxxxx>, Christian.Limpach@xxxxxxxxxxxxx
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On 26/9/06 11:20, "Yu, Ping Y" <ping.y.yu@xxxxxxxxx> wrote:

>> Or we could work out how we are chewing up dom0 for 10s per created
> domain.
>> Is the total time to create 12 domains less if you create them one
> after
>> another (serially) rather than issuing the xm requests all at the same
> time?
>> I wonder if creating many domains in parallel is thrashing domain 0
> somehow.
> We have tried to start 14 domains in serial, and the total time is 2
> minutes 
> 21 seconds, and if staring in parallel, the total time is 1 minutes 51
> second,
> counting from "xm create" to message "Started domain domain_name)
> Hope this info is useful to you. :-)

Well, it means we're not thrashing dom0 by doing parallel creates. That
means the answer (if we care) is to make HVM guest creation less slow. :-)

 -- Keir

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