From: Richard Weinberger <richard@nod.at>
To: Anton Ivanov <anton.ivanov@kot-begemot.co.uk>,
Thomas Meyer <thomas@m3y3r.de>
Cc: "user-mode-linux-devel@lists.sourceforge.net"
<user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] [PATCH v3] um: Switch clocksource to hrtimers
Date: Mon, 2 Nov 2015 09:37:14 +0100 [thread overview]
Message-ID: <563720BA.20107@nod.at> (raw)
In-Reply-To: <56371B6D.3080506@kot-begemot.co.uk>
Hi!
Am 02.11.2015 um 09:14 schrieb Anton Ivanov:
> I was testing under similar conditions (CPU pinning using taskset -c 0 on a multicore).
>
> I have removed it and run some retests - I cannot reproduce the hang at this point with my config
>
> I am going to run a defconfig and compare the results to see if this will give me any insights on the root cause.
I can reproduce on both my build machine (8 core) and my laptop (4 core).
If it helps I can share the rootfs.
On my laptop I was able to reproduce within 5 minutes.
1. make defconfig ARCH=um
2. make -j 4 linux ARCH=um
3. ./linux ubda=../Downloads/Debian-Squeeze-AMD64-root_fs mem=1G
4. login to tty0
5. wait a few minutes
6. try to run top, it will hang in nanosleep
Thanks,
//richard
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next prev parent reply other threads:[~2015-11-02 8:37 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-21 8:42 [uml-devel] [PATCH v3] um: Switch clocksource to hrtimers Anton Ivanov
2015-10-25 18:46 ` Anton Ivanov
2015-10-26 10:12 ` Richard Weinberger
2015-10-29 6:23 ` Anton Ivanov
2015-10-31 13:54 ` Richard Weinberger
2015-10-31 15:10 ` Thomas Meyer
2015-10-31 15:13 ` Richard Weinberger
2015-10-31 15:16 ` Thomas Meyer
2015-10-31 15:21 ` Richard Weinberger
2015-10-31 15:24 ` Thomas Meyer
2015-10-31 15:30 ` Richard Weinberger
2015-10-31 15:44 ` Thomas Meyer
2015-10-31 16:22 ` Anton Ivanov
2015-10-31 19:08 ` Richard Weinberger
2015-10-31 20:17 ` Anton Ivanov
2015-10-31 19:06 ` Richard Weinberger
2015-11-02 8:14 ` Anton Ivanov
2015-11-02 8:37 ` Richard Weinberger [this message]
2015-11-02 8:41 ` Anton Ivanov
2015-11-02 8:52 ` Richard Weinberger
2015-11-02 8:57 ` Anton Ivanov
2015-11-02 9:12 ` Richard Weinberger
2015-11-02 9:53 ` Anton Ivanov
2015-11-02 10:01 ` Richard Weinberger
2015-11-02 10:59 ` Anton Ivanov
2015-11-02 11:00 ` Anton Ivanov
2015-11-02 14:30 ` Anton Ivanov
2015-11-02 15:25 ` Richard Weinberger
2015-11-02 16:19 ` Anton Ivanov
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