[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Xen-devel] Re: [Xen-users] Xen 4.1.1 crash when manipulating cpupools.
- To: andrewpitman@xxxxxxxxxxx, George Dunlap <george.dunlap@xxxxxxxxxxxxx>
- From: Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>
- Date: Mon, 14 Nov 2011 10:20:42 +0100
- Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 14 Nov 2011 01:22:14 -0800
- Domainkey-signature: s=s1536a; d=ts.fujitsu.com; c=nofws; q=dns; h=X-SBRSScore:X-IronPort-AV:Received:X-IronPort-AV: Received:Received:Message-ID:Date:From:Organization: User-Agent:MIME-Version:To:CC:Subject:References: In-Reply-To:Content-Type; b=ix8N6M5GhOkWb74M7f8CXmRyfIdn3pupXrSvJ2Th4LiGhDdv2suGNShZ fNxxzqSR/HBy0czMx7yMX9OT1EveshRvDKHybDKASakRryoFYCRSYVH5y jWDtlFdA/XKW0bCbifGEEd3vdAdrweQVHyUVNS0TCp0igOc0aV6AUQy51 S1BouiqXZqNWA/Lihlysb70rOD1or0KqmDvuBHYRmr6s+ZGS9x/ecDSdR OHzMnVwjyZTcVNERI78+K3rPiZnnC;
- List-id: Xen developer discussion <xen-devel.lists.xensource.com>
On 11/11/2011 10:18 PM, andrewpitman@xxxxxxxxxxx wrote:
Juergen,
It doesn't look like this has been fixed. I managed to get my
4.1.2 server to crash when setting the weight of Domain-0
(running in Pool-0 using credit2) and again when moving some
cpus into a new cpupool which was set up to use the credit2
scheduler.
Yeah, I could reproduce your problems on my machine.
George, I see two problems in credit2:
- when setting the weight of dom0, vcpu_schedule_lock_irq(current)
will be
 taken in sched_adjust() of schedule.c and again in
csched_dom_cntl() of
 sched_credit2.c resulting in a deadlock.
- removing a cpu from a cpupool seems not to work for credit2. I
removed all
 but cpu 0 from Pool-0 and the dom0 vcpus were all active on cpus
1-3. It
 took some time until they moved to cpu 0 (verified via 'r'
hotkey on the
 xen console).
I tested on xen-4.1-testing cs 23182.
Juergen
--
Juergen Gross Principal Developer Operating Systems
PDG ES&S SWE OS6 Telephone: +49 (0) 89 3222 2967
Fujitsu Technology Solutions e-mail: juergen.gross@xxxxxxxxxxxxxx
Domagkstr. 28 Internet: ts.fujitsu.com
D-80807 Muenchen Company details: ts.fujitsu.com/imprint.html
|
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
