Debian Bug report logs - #619317
linux-image-2.6.32-5-xen-686: booting via hypervisor slows bootup significant (hang) and also slow on runtime

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Jan Wagner <waja@cyconet.org>

To: submit@bugs.debian.org

Subject: linux-image-2.6.32-5-xen-686: booting via hypervisor slows bootup significant (hang) and also slow on runtime

Date: Tue, 22 Mar 2011 22:04:47 +0100

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Package: linux-image-2.6.32-5-xen-686
Version: 2.6.32-31
Severity: important

Booting linux-image-2.6.32-5-xen-686 via hypervisor gets hanging (several) 
init scripts. This seems to "workaround" with generating input on stdin when 
the init script hangs. Video of bootup is also available[1].

I attached the dmesg booted via hypervisor (xen.dmesg) and same maschine 
without hypervisor (dmesg). I also attached some grub config.

Even after boot there seems some trouble, cause update-grub with booted 
hypervisor needs 25 seconds to run vs. 7,4 seconds without hypervisor.

Thanks and with kind regards, Jan.
[1] http://blog.waja.info/downloads/20110322-205405.mov
-- System Information:
Debian Release: 6.0.1
  APT prefers squeeze-updates
  APT policy: (500, 'squeeze-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-xen-686 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

[grub (text/plain, attachment)]

[grub.cfg (text/plain, attachment)]

[lspci (text/plain, attachment)]

[xm.dmesg (text/plain, attachment)]

[xm.info (text/plain, attachment)]

[xen.dmesg (text/plain, attachment)]

[dmesg (text/plain, attachment)]

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Message #10 received at 619317@bugs.debian.org (full text, mbox, reply):

From: Jan Wagner <waja@cyconet.org>

To: 619317@bugs.debian.org

Subject: Re: linux-image-2.6.32-5-xen-686: booting via hypervisor slows bootup significant (hang) and also slow on runtime

Date: Sat, 26 Mar 2011 12:11:04 +0100

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On Tuesday, 22. March 2011, you wrote:
> Booting linux-image-2.6.32-5-xen-686 via hypervisor gets hanging (several)
> init scripts. This seems to "workaround" with generating input on stdin
> when the init script hangs. Video of bootup is also available[1].

It looks like “max_cstate=1″ did fix the problem for me. It also appeared 
recently on the Linux power management list[1]. In the next day I will also 
try "hpet=disable" and give feedback.

With kind regards, Jan.
[1] https://lists.linux-foundation.org/pipermail/linux-pm/2011-
March/030544.html
-- 
Never write mail to <waja@spamfalle.info>, you have been warned!
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Version: 3.12
GIT d-- s+: a C+++ UL++++ P+ L+++ E--- W+++ N+++ o++ K++ w--- O M V- PS PE Y++
PGP++ t-- 5 X R tv- b+ DI D+ G++ e++ h---- r+++ y++++ 
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Message #15 received at 619317@bugs.debian.org (full text, mbox, reply):

From: Jan Wagner <waja@cyconet.org>

To: 619317@bugs.debian.org

Subject: Re: linux-image-2.6.32-5-xen-686: booting via hypervisor slows bootup significant (hang) and also slow on runtime

Date: Mon, 28 Mar 2011 11:33:38 +0200

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On Saturday 26 March 2011 12:11:04 you wrote:
> On Tuesday, 22. March 2011, you wrote:
> > Booting linux-image-2.6.32-5-xen-686 via hypervisor gets hanging
> > (several) init scripts. This seems to "workaround" with generating input
> > on stdin when the init script hangs. Video of bootup is also
> > available[1].
> 
> It looks like “max_cstate=1″ did fix the problem for me. It also appeared
> recently on the Linux power management list[1]. In the next day I will also
> try "hpet=disable" and give feedback.

Okay .... "hpet=disable" seems not to work, while "cpuidle=off" did work also 
quite well instead of “max_cstate=1″.

With kind regards, Jan.
-- 
Never write mail to <waja@spamfalle.info>, you have been warned!
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GIT d-- s+: a C+++ UL++++ P+ L+++ E--- W+++ N+++ o++ K++ w--- O M V- PS PE Y++
PGP++ t-- 5 X R tv- b+ DI D+ G++ e++ h---- r+++ y++++ 
------END GEEK CODE BLOCK------

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Message #20 received at 619317@bugs.debian.org (full text, mbox, reply):

From: Jan Wagner <waja@cyconet.org>

To: 619317@bugs.debian.org

Subject: Re: linux-image-2.6.32-5-xen-686: booting via hypervisor slows bootup significant (hang) and also slow on runtime

Date: Wed, 6 Apr 2011 18:02:07 +0200

[Message part 1 (text/plain, inline)]

On Monday, 28. March 2011, Jan Wagner wrote:
> On Saturday 26 March 2011 12:11:04 you wrote:
> > On Tuesday, 22. March 2011, you wrote:
> > > Booting linux-image-2.6.32-5-xen-686 via hypervisor gets hanging
> > > (several) init scripts. This seems to "workaround" with generating
> > > input on stdin when the init script hangs. Video of bootup is also
> > > available[1].
> > 
> > It looks like “max_cstate=1″ did fix the problem for me. It also appeared
> > recently on the Linux power management list[1]. In the next day I will
> > also try "hpet=disable" and give feedback.
> 
> Okay .... "hpet=disable" seems not to work, while "cpuidle=off" did work
> also quite well instead of “max_cstate=1″.

I experienced the same on a recent HP DL108 G6 with linux-image-2.6.32-5-xen-
amd64. :(
Even with “max_cstate=1" it seems to have slowness on disc access compared to 
running without hypervisor, but thats just empirical.

With kind regards, Jan.
-- 
Never write mail to <waja@spamfalle.info>, you have been warned!
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GIT d-- s+: a C+++ UL++++ P+ L+++ E--- W+++ N+++ o++ K++ w--- O M V- PS PE Y++
PGP++ t-- 5 X R tv- b+ DI D+ G++ e++ h---- r+++ y++++ 
------END GEEK CODE BLOCK------

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Message #33 received at 619317-done@bugs.debian.org (full text, mbox, reply):

From: Ben Hutchings <benh@debian.org>

To: 619317-done@bugs.debian.org

Subject: Closing bugs assigned to linux-2.6 package

Date: Sun, 07 Feb 2016 22:43:08 +0000

Version: 3.4.1-1~experimental.1+rm

Debian 6.0 Long Term Support has now ended, and the 'linux-2.6' source
package will no longer be updated.  This bug is being closed on the
assumption that it does not affect the kernel versions in newer Debian
releases.

If you can still reproduce this bug in a newer release, please reopen
the bug report and reassign it to 'src:linux' and the affected version
of the package.  You can find the package version for the running
kernel by running:

    uname -v

or the versions of all installed kernel packages by running:

    dpkg -l 'linux-image-[34]*' | grep ^.i

and looking at the third column.

I apologise that we weren't able to provide a specific resolution for
this bug.

Ben.

-- 
Ben Hutchings - Debian developer, member of Linux kernel and LTS teams

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