From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Bader Subject: Re: Xen PVM: Strange lockups when running PostgreSQL load Date: Thu, 18 Oct 2012 09:24:58 +0200 Message-ID: <507FAECA.3070506@canonical.com> References: <1350479456-4007-1-git-send-email-stefan.bader@canonical.com> <507EB27D.8050308@citrix.com> <1350482118.2460.74.camel@zakaz.uk.xensource.com> <507ECD06.2050407@canonical.com> <507ED038.8000806@citrix.com> <507FC51102000078000A235E@nat28.tlf.novell.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7345903983062252177==" Return-path: In-Reply-To: <507FC51102000078000A235E@nat28.tlf.novell.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Jan Beulich Cc: Andrew Cooper , "xen-devel@lists.xen.org" , Ian Campbell , Konrad Rzeszutek Wilk List-Id: xen-devel@lists.xenproject.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --===============7345903983062252177== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="------------enigA37A44F86644D73C29FE6627" This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA37A44F86644D73C29FE6627 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 18.10.2012 09:00, Jan Beulich wrote: >>>> On 17.10.12 at 17:35, Andrew Cooper wrot= e: >> In each case, the event channels are masked (no surprise given the >> conversation so far on this thread), and have no pending events.=20 >> Therefore, I believe we are looking at the same bug. >=20 > 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 t= he version that first introduced them, so I assumed we talk about the same b= ase. 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 ke= rnel on a production load) to be related directly to the paravirtualized spinlock= implementation for Xen. --------------enigA37A44F86644D73C29FE6627 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQIcBAEBCgAGBQJQf67SAAoJEOhnXe7L7s6jfhwP/3FoP6zoFKnVfj5Ox108Sl0S DZLVVpfO4oqlbvgfSE6qgJAZtyjMAnq3bduXN+nNwTrm59izwOcoR2sRHbrH80L7 97RlcUd5UK47tMracyuIuvHQYgrJv7K2zfRZyxvdYOEpItuhe8HR3AFQnrgTq3gu d1TADmuqlCoPWqzpqOg/AVfn0lgPecI19H/vgWmIK684eygwRXmnwJKabl7XmPlp 7SbgbxoUbTBn7FM2WO4QaR9/YizPnBSqxgf0pt15i3TsvrPBG1sMvzNJf9HD37o3 D1PZbM7+P9Z3KbJlLnPf1Ij0vWZJCly1nE4+SiDa6YAnryEqbK90gAI87Ttr/o+B n1XmrqSvuyuLImus/lJtWvV7Q132NDuQR4AqZ1jYxJQGc/Fesba8hb5BRw4AnZ1h ZuAcXbwK4qFMrG5UgNRAqicMs+SqFI+m0ObvotbpxVZBmhb89zTWaOBkTKSeCorI +7qJKr2a/gQsMspQgfOhvVI5Pmbwg310Md+rtEVY+ngm/eBydeKO285wKGot+GTR pYyiexePT/gCLu3/6vs6Y7VHE5D5n+CBLigaPsPNc612LPK3WeUsc3prGMy8htGS OWb+qn2GHf9vBk+iQlAcIw2JIqcRZnD8vuuEs0cxIk3y9E4jqhzcvgPwp2iLe5vR Fy5rq6ECfFaVZZ96+exL =+/BH -----END PGP SIGNATURE----- --------------enigA37A44F86644D73C29FE6627-- --===============7345903983062252177== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel --===============7345903983062252177==--