Re: [Xen-users] Running nbench

[Marcelo Messa <mrmessa@xxxxxxxxx>]

Do you agree that your test tool could be your bottleneck?

Cheers,
    Marcelo

Em 27/03/2008, às 11:16, Guillaume Betous escreveu:
> Hi all !
>
> We are making our first steps under Xen. We are working under Suse,
> and we successfully installed 4 virtual machines on a Core2Duo T7200.
>
> We have some special performance needs, so the first thing we tried is
> to share, on different configuration, CPU usage.
>
> To "touch" the results, we simply run nbench [1]
>
> The problem is that we always have the same final result, even in the
> following configurations :
> - nbench running only on Dom0
> - nbench running on 4 VM, each one has 1 VCPU (each VM is "any cpu")
> - nbench running on 4 VM, each one has 1 VCPU (first VM in assigned on
> CPU 0, the 3 others on CPU 1)
> - nbench running on 4 VM, the first one has 10 VCPU, the other one
> have 1 VCPU (each VM is "any cpu")
>
> We really are getting crasy !!! Did we miss something ? How to be sure
> to share correctly CPU consumtion ?
>
> Thank you very much,
>
> Regards,
>
> gUI
>
> [1] http://www.tux.org/~mayer/linux/bmark.html
>
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