From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1ZtGzG-0001lj-MC for user-mode-linux-devel@lists.sourceforge.net; Mon, 02 Nov 2015 15:25:34 +0000 Received: from a.ns.miles-group.at ([95.130.255.143] helo=radon.swed.at) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.76) id 1ZtGzB-0006xA-TZ for user-mode-linux-devel@lists.sourceforge.net; Mon, 02 Nov 2015 15:25:34 +0000 References: <1445416947-824802-1-git-send-email-aivanov@brocade.com> <562D236E.7020108@kot-begemot.co.uk> <562DFC90.9030308@nod.at> <5631BB4E.4010301@kot-begemot.co.uk> <1446304232.3238.8.camel@m3y3r.de> <5634DAA4.70308@nod.at> <1446304594.3238.11.camel@m3y3r.de> <5634DC7B.3010707@nod.at> <56371B6D.3080506@kot-begemot.co.uk> <563720BA.20107@nod.at> <563721BB.10003@kot-begemot.co.uk> <56372439.2070509@nod.at> <5637257A.8000200@kot-begemot.co.uk> <563728E2.5090901@nod.at> <563732B7.7050008@kot-begemot.co.uk> <5637346F.6060004@nod.at> <56377384.2040901@kot-begemot.co.uk> From: Richard Weinberger Message-ID: <56378061.2000706@nod.at> Date: Mon, 2 Nov 2015 16:25:21 +0100 MIME-Version: 1.0 In-Reply-To: <56377384.2040901@kot-begemot.co.uk> List-Id: The user-mode Linux development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: user-mode-linux-devel-bounces@lists.sourceforge.net Subject: Re: [uml-devel] [PATCH v3] um: Switch clocksource to hrtimers To: Anton Ivanov , Thomas Meyer Cc: "user-mode-linux-devel@lists.sourceforge.net" Am 02.11.2015 um 15:30 schrieb Anton Ivanov: > On 02/11/15 10:01, Richard Weinberger wrote: >> Am 02.11.2015 um 10:53 schrieb Anton Ivanov: >>> [snip] >>> >>>>>> I'm pretty sure that you don't see the issue as your Jessy userspace uses nanosleep periodically. >>>>> There are quite a few things running so this may indeed be the case. >>>>> >>>>> What do you use for userspace (so I can try to reproduce this and debug it)? >>>> Debian Squeeze amd64 with almost nothing running. >>>> >>>> PID TTY STAT TIME COMMAND >>>> 2 ? S 0:00 [kthreadd] >>>> 3 ? S 0:00 \_ [ksoftirqd/0] >>>> 4 ? S 0:00 \_ [kworker/0:0] >>>> 5 ? S< 0:00 \_ [kworker/0:0H] >>>> 6 ? S 0:00 \_ [kworker/u2:0] >>>> 7 ? S 0:00 \_ [kdevtmpfs] >>>> 8 ? S< 0:00 \_ [netns] >>>> 9 ? S< 0:00 \_ [writeback] >>>> 10 ? S 0:00 \_ [kworker/u2:1] >>>> 11 ? S< 0:00 \_ [crypto] >>>> 12 ? S 0:00 \_ [kworker/0:1] >>>> 13 ? S< 0:00 \_ [bioset] >>>> 14 ? S< 0:00 \_ [kblockd] >>>> 15 ? S 0:00 \_ [kswapd0] >>>> 68 ? S 0:00 \_ [fsnotify_mark] >>>> 221 ? S< 0:00 \_ [bioset] >>>> 229 ? S< 0:00 \_ [deferwq] >>>> 231 ? S 0:00 \_ [jbd2/ubda-8] >>>> 232 ? S< 0:00 \_ [ext4-rsv-conver] >>>> 233 ? S< 0:00 \_ [kworker/0:1H] >>>> 1 ? Ss 0:00 init [2] >>>> 271 ? S>>> 297 ? S< 0:00 \_ udevd --daemon >>>> 298 ? S< 0:00 \_ udevd --daemon >>>> 549 ? Sl 0:00 /usr/sbin/rsyslogd -c4 >>>> 580 ? Ss 0:00 /usr/sbin/cron >>>> 595 ? Ss 0:00 /usr/bin/dbus-daemon --system >>>> 609 ? Ss 0:00 /usr/sbin/sshd >>>> 628 tty0 Ss 0:00 /bin/login -- >>>> 631 tty0 S 0:00 \_ -bash >>>> 636 tty0 R+ 0:00 \_ ps fax >>>> 629 tty1 Ss+ 0:00 /sbin/getty 38400 tty1 linux >>>> 630 ttyS0 Ss+ 0:00 /sbin/getty 115200 ttyS0 linux >>> I cannot reproduce that by dropping jessie into single user mode so I am going to build a squeeze image and re-test with that. >> I can also reproduce using init=/bin/bash. > > Reproduced, I think I located the culprit. > > We still need to relay the "interruption" signal which broke a nanosleep. > > I am testing a fix, which so far is working. If the fix proves viable, I will test it as above (init=/bin/bash) and the normal tests I usually do anyway. > > If it works OK, I will submit v4. Yay! Thanks, //richard the QA engineer ;) ------------------------------------------------------------------------------ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel