[Users] Loadavg virtualisation problem (028stab047.1+fix)

Kirill Korotaev dev at sw.ru
Sun Nov 18 04:16:09 EST 2007


1. what kernel do you use?
2. how do you decide that your machine is idling?
   can you please provide output of `ps axf` from HN?
3. what do you mean by "I played with adding/removing cpus from the guest"?
   vzctl set <VEID> --cpus <N>  or something else?

Yep, I see a problem with counters in the code on --cpus decreasing...
will check...


Dariush Pietrzak wrote:
> Hello,
>  I encountered a ~6.0 load avg in idling guest, HN reports 0,0,0, cpuusage
> stats both from guest and from HN suggest that host is idling, but loadavg
> says 6.3,6.0,6.2 .
>  Temporary workaround: after 'vzctl chkpnt guest' and 'vzctl restore guest',
> guest started reporting correct values.
>  Guest is running only postgres database, both HN and guest are amd64
> running on intel.
> I've got dev machine with the same problem:
> eyck at etchdev386:~/40m-ovz/work$ w
>  11:55:58 up 3 days,  2:41,  1 user,  load average: 129.00, 129.00, 128.96
> on HN:
> codev64:/etc/vz/conf# w
>  11:56:20 up 3 days,  2:43,  7 users,  load average: 0.00, 0.00, 0.00
> the guest in question is really idling.
>  One thing that those two machines have in common, is that I played with
> adding/removing cpus from the guest (oh, and they are both amd64, although
> one guest is amd64 and another is i386).

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