From: Stefan Bader <stefan.bader@canonical.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Andrew Cooper <andrew.cooper3@citrix.com>,
"xen-devel@lists.xen.org" <xen-devel@lists.xen.org>,
Ian Campbell <Ian.Campbell@citrix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: Xen PVM: Strange lockups when running PostgreSQL load
Date: Thu, 18 Oct 2012 09:24:58 +0200 [thread overview]
Message-ID: <507FAECA.3070506@canonical.com> (raw)
In-Reply-To: <507FC51102000078000A235E@nat28.tlf.novell.com>
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On 18.10.2012 09:00, Jan Beulich wrote:
>>>> On 17.10.12 at 17:35, Andrew Cooper <andrew.cooper3@citrix.com> wrote:
>> In each case, the event channels are masked (no surprise given the
>> conversation so far on this thread), and have no pending events.
>> Therefore, I believe we are looking at the same bug.
>
> That seems very unlikely (albeit not impossible) to me, given that
> the non-pvops kernel uses ticket locks while the pvops one doesn't.
True, if classic 2.6.32 actually meant non-pvops. In my memory that was the
version that first introduced them, so I assumed we talk about the same base.
The one I am looking at seems (as much info there is available right now, but I
try to get confirmation from reporters running a non-paravirt-spinlock kernel on
a production load) to be related directly to the paravirtualized spinlock
implementation for Xen.
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next prev parent reply other threads:[~2012-10-18 7:24 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-17 13:10 Xen PVM: Strange lockups when running PostgreSQL load Stefan Bader
2012-10-17 13:28 ` Andrew Cooper
2012-10-17 13:45 ` Stefan Bader
2012-10-17 13:55 ` Ian Campbell
2012-10-17 15:21 ` Stefan Bader
2012-10-17 15:35 ` Andrew Cooper
2012-10-17 16:27 ` Stefan Bader
2012-10-17 17:46 ` Andrew Cooper
2012-10-18 7:00 ` Jan Beulich
2012-10-18 7:08 ` Jan Beulich
2012-10-18 7:38 ` Stefan Bader
2012-10-18 7:48 ` Ian Campbell
2012-10-18 10:20 ` Stefan Bader
2012-10-18 10:47 ` Jan Beulich
2012-10-18 12:43 ` Stefan Bader
2012-10-18 20:52 ` Stefan Bader
2012-10-19 7:10 ` Stefan Bader
2012-10-19 8:06 ` Jan Beulich
2012-10-19 8:33 ` Stefan Bader
2012-10-19 9:24 ` Jan Beulich
2012-10-19 14:03 ` Stefan Bader
2012-10-19 14:49 ` Jan Beulich
2012-10-19 14:57 ` Stefan Bader
2012-10-19 15:08 ` Jan Beulich
2012-10-19 15:21 ` Stefan Bader
2012-10-19 15:33 ` Jan Beulich
2012-10-18 7:24 ` Stefan Bader [this message]
2012-10-17 14:51 ` Jan Beulich
2012-10-17 15:12 ` Andrew Cooper
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