From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta7.messagelabs.com (mail6.bemta7.messagelabs.com [216.82.255.55]) by kanga.kvack.org (Postfix) with ESMTP id 730319000DF for ; Mon, 3 Oct 2011 11:06:27 -0400 (EDT) Date: Mon, 3 Oct 2011 11:06:20 -0400 From: Eric B Munson Subject: Re: [PATCH 0/9] V2: idle page tracking / working set estimation Message-ID: <20111003150619.GA12778@mgebm.net> References: <1317170947-17074-1-git-send-email-walken@google.com> <20110929164319.GA3509@mgebm.net> <4186d5662b3fb21af1b45f8a335414d3@mgebm.net> <20110930181914.GA17817@mgebm.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="UugvWAfsgieZRqgk" Content-Disposition: inline In-Reply-To: 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 --UugvWAfsgieZRqgk Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, 30 Sep 2011, Michel Lespinasse wrote: > On Fri, Sep 30, 2011 at 11:19 AM, Eric B Munson wrote: > > I am able to recreate on a second desktop I have here (same model CPU b= ut a > > different MB so I am fairly sure it isn't dying hardware). =A0It looks = to me like > > a CPU softlocks and it stalls the process active there, so most recentl= y that > > was XOrg. =A0The machine lets me login via ssh for a few minutes, but t= hings like > > ps and cat or /proc files will start to work and give some output but h= ang. > > I cannot call reboot, nor can I sync the fs and reboot via SysRq. =A0My= next step > > is to setup a netconsole to see if anything comes out in the syslog tha= t I > > cannot see. >=20 > I haven't had time to try & reproduce locally yet (apologies - things > have been coming up at me). >=20 > But a prime suspect would be a bad interaction with > CONFIG_MEMORY_HOTPLUG, as Kamezama remarked in his reply to patch 4. I > think this could be the most likely cause of what you're observing. >=20 CONFIG_MEMORY_HOTPLUG seems to be the responsible party here, I disabled it= in my config and have been able to build 6 kernels straight without a hang. --UugvWAfsgieZRqgk Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQEcBAEBAgAGBQJOic9rAAoJEH65iIruGRnNOM8H/RM6ZqrSNl7ImpPexVB6Tv+a TYYY01tChp8Oci2tMPj1aKHLH/uVdxZyiT22XmnveudQxOETQTgKRzNFdcO9DskS s8ZlOkTyg3CJ4g7BpDBNtwHisq1ePL5UfGtTH5cEz5Jc6UEvxRrjKO183r/Fo1Wt ot4LEJ/BTDJAj438QdIMvZusvFz0UvjsBnWWhQhqT5XID3e57DavtpZGlOZCU1LZ h0j60XnPd0fifxO3mthVsczHwC+LQJ9MIKtH/RWX4gDdknyWh0+lrjnMWM19XkDN ew1Vsrxmfsz9d0nlyY6FqwvmVoFuya17HK28wz3jXrT/M7+gBRrTDSp0kz0a4Ro= =NErA -----END PGP SIGNATURE----- --UugvWAfsgieZRqgk-- -- 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