Bug#440904: When virtualbox is running, ksoftirqd takes 20% proc

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Bug#440904: When virtualbox is running, ksoftirqd takes 20% proc

Patrick Winnertz-4
forwarded 440904 [hidden email]
thanks

Hello, I've forwarded this issue to the upstream author.
Thanks for your report.





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 .''`.   Patrick Winnertz <[hidden email]>
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`. `'`   http://www.der-winnie.de http://d.skolelinux.org/~winnie
  `-  Debian - when you have better things to do than fixing systems


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Bug#440904: When virtualbox is running, ksoftirqd takes 20% proc

Patrick Winnertz-4
Okay get a answer from upstream:


22:55:28      pwinnertz | hey
22:55:34      pwinnertz | anybody around?
22:55:52      pwinnertz | can someone could have a look on this bug here:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=440904
22:58:41           bird |  amd box?
22:59:18      pwinnertz | this should be included within the report
22:59:30      pwinnertz | Architecture: i386 (i686)
22:59:40           bird |  and what does that mean?
23:00:13      pwinnertz | what does what mean?
23:01:18           bird |  i386/i686 == x86 CPU. I wanted to get confirmed
that it is an AMD CPU.
23:01:53      pwinnertz | ah
23:02:15           bird |  I bet it's a X2 dual core AMD, if it is I'm
pretty sure I know what's causing it. the answer is that there isn't much
we can do about it right now.
23:02:27      pwinnertz | bird: okay I'll ask
23:02:49      pwinnertz | am I allowed to paste the last some lines here
into the bug report?
23:03:02           bird |  if you past the next one too :-)
23:03:23      pwinnertz | :) which one :-P
23:03:39           bird |  if I get a confirmation that it's an AMD X2 or
similar, I know what I need to look at, and I'll try find some time and
see if I can't fix it for 1.6+

Can you please confirm what kind of cpu you have?
Thanks

Greetings
Patrick

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 .''`.   Patrick Winnertz <[hidden email]>
:  :' :  GNU/Linux Debian-Edu Developer
`. `'`   http://www.der-winnie.de http://d.skolelinux.org/~winnie
  `-  Debian - when you have better things to do than fixing systems


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Bug#440904: When virtualbox is running, ksoftirqd takes 20% proc

Vincent Bernat
OoO  La  nuit  ayant déjà  recouvert  d'encre  ce  jour du  mercredi  05
septembre  2007,  vers  23:06, Patrick  Winnertz  <[hidden email]>
disait:

> Okay get a answer from upstream:
> 22:55:28      pwinnertz | hey
> 22:55:34      pwinnertz | anybody around?
> 22:55:52      pwinnertz | can someone could have a look on this bug here:
> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=440904
> 22:58:41           bird |  amd box?
> 22:59:18      pwinnertz | this should be included within the report
> 22:59:30      pwinnertz | Architecture: i386 (i686)
> 22:59:40           bird |  and what does that mean?
> 23:00:13      pwinnertz | what does what mean?
> 23:01:18           bird |  i386/i686 == x86 CPU. I wanted to get confirmed
> that it is an AMD CPU.
> 23:01:53      pwinnertz | ah
> 23:02:15           bird |  I bet it's a X2 dual core AMD, if it is I'm
> pretty sure I know what's causing it. the answer is that there isn't much
> we can do about it right now.
> 23:02:27      pwinnertz | bird: okay I'll ask
> 23:02:49      pwinnertz | am I allowed to paste the last some lines here
> into the bug report?
> 23:03:02           bird |  if you past the next one too :-)
> 23:03:23      pwinnertz | :) which one :-P
> 23:03:39           bird |  if I get a confirmation that it's an AMD X2 or
> similar, I know what I need to look at, and I'll try find some time and
> see if I can't fix it for 1.6+

> Can you please confirm what kind of cpu you have?

It is a Pentium 4 HT. Sorry. :)

processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 2.40GHz
stepping : 9
cpu MHz : 2394.106
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
bogomips : 4792.16
clflush size : 64

processor : 1
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Pentium(R) 4 CPU 2.40GHz
stepping : 9
cpu MHz : 2394.106
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid xtpr
bogomips : 4788.34
clflush size : 64

And,  BTW, ksoftirqd takes  20% proc  even when  no virtual  machine are
running. Just running the frontend of VirtualBox makes the trick.

I will test if the problem is still here with 1.5.0 tomorrow.
--
panic("bad_user_access_length executed (not cool, dude)");
        2.0.38 /usr/src/linux/kernel/panic.c

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Bug#440904: When virtualbox is running, ksoftirqd takes 20% proc

Vincent Bernat

> And,  BTW, ksoftirqd takes  20% proc  even when  no virtual  machine are
> running. Just running the frontend of VirtualBox makes the trick.
>
> I will test if the problem is still here with 1.5.0 tomorrow.

The problem still exists in 1.5.0. Tell me if you need
more info on my hardware.

Thanks.