: [Users] vmstat and floating point exception

[Kir Kolyshkin]

I barely remember there was a fix in the kernel related to this. I might be
wrong, but it's worth checking on a latest rhel6 stable or testing kernel.
11.07.2012 3:54 пользователь "Mark Johanson" <mjohanson at a2hosting.com>
написал:

> Linux solusvm.a2hosting.com 2.6.32-042stab053.5 #1 SMP Tue Mar 27
> vzctl version 3.3
> vswap is enabled
>
> Since upgrading to a 2.6.32 kernel one of our users noticed that they
> are occasionally getting a Floating Point Exception when running vmstat:
>
> [root at server ~]# vmstat 1 5
> procs -----------memory---------- ---swap-- -----io---- --system--
> -----cpu------
>  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy
> id wa st
>  0  0      0 2048244      0  32816    0    0     0     2    0 7627  0  0
> 99  0  0
>  0  0      0 2048236      0  32816    0    0     0     0    0  110  0  0
> 100  0  0
>  0  0      0 2048236      0  32816    0    0     0     0    0   78  0  0
> 100  0  0
>  0  0      0 2048236      0  32816    0    0     0     0    0   91  0  0
> 100  0  0
> Floating point exception
>
> It doesn't happen every time as you can see here:
>
> [root at server ~]# vmstat 1 10
> procs -----------memory---------- ---swap-- -----io---- --system--
> -----cpu------
>  r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy
> id wa st
>  0  0      0 2068584      0  12472    0    0     0     0    0 1745  0  0
> 100  0  0
>  0  0      0 2068576      0  12472    0    0     0     0    0   82  0  0
> 100  0  0
>  0  0      0 2068576      0  12472    0    0     0     0    0   77  0  0
> 100  0  0
>  0  0      0 2068576      0  12472    0    0     0     0    0  109  0  0
> 100  0  0
>  0  0      0 2068576      0  12472    0    0     0     0    0   92  0  0
> 100  0  0
>  0  0      0 2068576      0  12472    0    0     0     0    0   80  0  0
> 100  0  0
>  0  0      0 2068576      0  12472    0    0     0     0    0   87  0  0
> 100  0  0
>  0  0      0 2068576      0  12472    0    0     0     0    0   66  0  0
> 100  0  0
>  0  0      0 2068588      0  12472    0    0     0     0    0  130  0  0
> 100  0  0
>  0  0      0 2068588      0  12472    0    0     0     0    0   72  0  0
> 100  0  0
>
> I have been able to replicate this issue in other OS templates (theirs
> is Ubuntu 11.10, but I have replicated in Ubuntu, Fedora, Centos,
> etc...) running the same kernel and vzctl version.
>
> I can not replicate this issue on the node.
>
> Wondering if anyone else has run across this issue and/or knows what
> might be causing it.
>
> _______________________________________________
> Users mailing list
> Users at openvz.org
> https://openvz.org/mailman/listinfo/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://openvz.org/pipermail/users/attachments/20120711/9ea7b805/attachment.html