From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752754AbbCHXbS (ORCPT ); Sun, 8 Mar 2015 19:31:18 -0400 Received: from cantor2.suse.de ([195.135.220.15]:58691 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751738AbbCHXbQ (ORCPT ); Sun, 8 Mar 2015 19:31:16 -0400 Date: Mon, 9 Mar 2015 10:30:56 +1100 From: NeilBrown To: Prakash Punnoor Cc: LKML Subject: Re: udiskd high CPU usage with 4.0 git Message-ID: <20150309103056.2dea3bf6@notabene.brown> In-Reply-To: <54FC837F.8070204@punnoor.de> References: <54FC837F.8070204@punnoor.de> X-Mailer: Claws Mail 3.10.1-162-g4d0ed6 (GTK+ 2.24.25; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; boundary="Sig_/ouH8vf33odPjZ=hdGID/iP."; protocol="application/pgp-signature" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/ouH8vf33odPjZ=hdGID/iP. Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sun, 08 Mar 2015 18:14:39 +0100 Prakash Punnoor wro= te: > Hi, >=20 > I noticed the udisks daemon (version 2.1.4) suddenly started using high > cpu (one core at 100%) with linux 4.0 git kernel. I bisected it to: >=20 > 750f199ee8b578062341e6ddfe36c59ac8ff2dcb >=20 > And reverting it from current master (at > 2cf3afcd4cbe0e32b8722fc291e9255de1b4d6c6) fixes my problem indeed. >=20 > I attached dmesg and config from > 2cf3afcd4cbe0e32b8722fc291e9255de1b4d6c6 with > 750f199ee8b578062341e6ddfe36c59ac8ff2dcb reverted. Any more infos > needed? I am actually using a raid5 array, if that matters: >=20 > Personalities : [raid6] [raid5] [raid4] > md127 : active raid5 sdd1[1] sdb1[3] sdc1[0] > 3907023872 blocks super 1.2 level 5, 512k chunk, algorithm 2 [3/3] > [UUU] >=20 > unused devices: >=20 >=20 > The array uses systemd automount feature (x-systemd.automount). >=20 > Please CC me, as I am not subscribed. >=20 >=20 > Regards, >=20 > Prakash Thanks for the report. I can't reproduce this, or see what would cause it. Can you please reproduce the problem and then run strace -o /tmp/udisks.trace -f -p `pidof udisksd` for a few seconds, then interrupt and post the resulting '/tmp/udisks.trace= '. Thanks, NeilBrown --Sig_/ouH8vf33odPjZ=hdGID/iP. Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIVAwUBVPzbvDnsnt1WYoG5AQKBDRAAplioCPf71+OGZzCQi/Wl1bP9qRKpVMAf bjI18IURnv+OP5zD0rZOrbHlXJcuYJl4Fg7dSeOmTWq8eGBBlM84MCUD6uS1THO8 IeR70LlR2JvSYRlPVKMf7mPCwekQIzao2Y8NnNn/W74U2QN+l9LsrcQAS8hevXbE Hjx6QHNvtx2eDSsQS6ftSh67r0rMBXMxPvC0gErM9KH/n1DUNOL+4EdJY1MLIwhd ElT/8NPS02V1uLc6xYBKVIKkWgDbV6xjdJjzudfrLRxUbtIPZz6cobCg3nbfDYeH Vd9Wrs4dGkcy59NAmw+DY4jSd7YJnuKLYywvTHSd2h3nU9U/92A6mDSSRM12DVJ7 wv7RCxtHLpCWzQxCrsOSwJYbJH7Eg+5dT+mZEy7MrjuyE+m0LdXUAGAUokMr+7u9 5DjzETRGhYToQ4DAQSv1QgkA/TOANncE6yAuctkniQ7iOD8zEUwGjA7c3Wn+kNgq D3iZJsj7REGxLOEe51IBW3/2TdupeXKKIeXhKjearjEtHt/qgWsVM1Ig60db7kr4 8kXZ+SdwspGdZCfW+2/3OitP9nWVPeIu6MW/qFIfy7TmFozrC2bc0eBMRwvijJCi sj+JCsZjf4efpzT4kRJ9RcJwpL3TTiyhJqFzh2DSq8nxx56MFvhdQDh3dvEryozs jVJujdCvHzw= =MUJV -----END PGP SIGNATURE----- --Sig_/ouH8vf33odPjZ=hdGID/iP.--