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Re: [Xen-devel] RE: "xm create" take more time to return.

To: "Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] RE: "xm create" take more time to return.
From: Keir Fraser <keir@xxxxxxx>
Date: Wed, 24 Nov 2010 09:02:49 +0000
Cc: Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>
Delivery-date: Wed, 24 Nov 2010 01:04:08 -0800
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Thread-topic: [Xen-devel] RE: "xm create" take more time to return.
User-agent: Microsoft-Entourage/
Noone cares that much about xm any more. Reproduce with xl create and you
might get some takers from the maintainers of libxl.

On 24/11/2010 03:14, "Zhang, Yang Z" <yang.z.zhang@xxxxxxxxx> wrote:

> No one care about the stress case? Or this issue only happen to me?
> best regards
> yang
>> -----Original Message-----
>> From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
>> [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Zhang, Yang Z
>> Sent: Friday, November 19, 2010 9:47 AM
>> To: xen-devel@xxxxxxxxxxxxxxxxxxx
>> Cc: Keir Fraser
>> Subject: [Xen-devel] "xm create" take more time to return.
>> Hi all
>> Now I am running stress test against xen-unstable. We have one case that
>> repeated to create/destroy guest one thousand times. I can see it is always
>> successful to create/destroy guest at begin of the testing(about first three
>> hundreds). But after create/destroy guest about three hundreds, we start to
>> see the testing will fail sometime. And at ending of the testing, it always
>> fail to
>> create guest.
>> After investigation, we found after many times create/destroy guest. The
>> return from "xm create guest.config" was very slowly. It may take more than 1
>> minutes to return. But guest still successful to create when it returned.
>> With
>> "top", I found the xenstored take about 70% cpu utilization when run "xm
>> create". So I think there would be something wrong with xenstored after
>> create/destroy guest many many times.
>> Anyone have suggestion?
>> best regards
>> yang
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