From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id 13F2D9000BD for ; Fri, 30 Sep 2011 14:19:18 -0400 (EDT) Date: Fri, 30 Sep 2011 14:19:14 -0400 From: Eric B Munson Subject: Re: [PATCH 0/9] V2: idle page tracking / working set estimation Message-ID: <20110930181914.GA17817@mgebm.net> References: <1317170947-17074-1-git-send-email-walken@google.com> <20110929164319.GA3509@mgebm.net> <4186d5662b3fb21af1b45f8a335414d3@mgebm.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="gKMricLos+KVdGMg" Content-Disposition: inline In-Reply-To: <4186d5662b3fb21af1b45f8a335414d3@mgebm.net> Sender: owner-linux-mm@kvack.org List-ID: To: Michel Lespinasse Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , KAMEZAWA Hiroyuki , Dave Hansen , Rik van Riel , Balbir Singh , Peter Zijlstra , Andrea Arcangeli , Johannes Weiner , KOSAKI Motohiro , Hugh Dickins , Michael Wolf --gKMricLos+KVdGMg Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, 29 Sep 2011, Eric B Munson wrote: > On Thu, 29 Sep 2011 13:25:00 -0700, Michel Lespinasse wrote: > >On Thu, Sep 29, 2011 at 9:43 AM, Eric B Munson > >wrote: > >>I have been trying to test these patches since yesterday > >>afternoon. =A0When my > >>machine is idle, they behave fine. =A0I started looking at > >>performance to make > >>sure they were a big regression by testing kernel builds with > >>the scanner > >>disabled, and then enabled (set to 120 seconds). =A0The scanner > >>disabled builds > >>work fine, but with the scanner enabled the second time I build > >>my kernel hangs > >>my machine every time. =A0Unfortunately, I do not have any more > >>information than > >>that for you at the moment. =A0My next step is to try the same > >>tests in qemu to > >>see if I can get more state information when the kernel hangs. > > > >Could you please send me your .config file ? Also, did you apply the > >patches on top of straight v3.0 and what is your machine like ? > > > >Thanks, >=20 >=20 > My .config will come separately to you. I applied the patches to > Linus' master branch as of yesterday. My machine is a single Xeon > 5690 with 12G of ram (do you need more details than that?) >=20 > Thanks, > Eric I am able to recreate on a second desktop I have here (same model CPU but a different MB so I am fairly sure it isn't dying hardware). It looks to me = like a CPU softlocks and it stalls the process active there, so most recently th= at was XOrg. The machine lets me login via ssh for a few minutes, but things = like ps and cat or /proc files will start to work and give some output but hang. I cannot call reboot, nor can I sync the fs and reboot via SysRq. My next = step is to setup a netconsole to see if anything comes out in the syslog that I cannot see. Eric --gKMricLos+KVdGMg Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBAgAGBQJOhggiAAoJEH65iIruGRnNtXwIANGCN1XK5vZHErXG/SPJzn1Z HyJ5IoRPfErNdpWHm+VCuhu/qM8rPs4d1kulSNCn7BcXJyduT/S1NEUTu2pv875s J465JH9b38LM7t2ohx242Kyn00XCG0CEd65F6lgE0VrPTFy9gleuNKe0yhIn1G+6 zigGo5sYDhTfhlXDiQHPwYjJqkQkPmMlu2hMfyX2agfHVnLuQbdQG5A42LUAVvoq TlgA1uDBsx4GGKAncHDoOg+2/X05AF0YzLVQGKOGFFW0pTutMDUATh7d9Lo+Cksx gDmRHiKXhADQSZxXZVCgDk7xi2MNEdKoA6ez4GApEGg8gD4+QXv/UT++Uw3kbZA= =QiKM -----END PGP SIGNATURE----- --gKMricLos+KVdGMg-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org