Re: [Xen-users] Disk IO tuning

[Florian Heigl <florian.heigl@xxxxxxxxx>]

Hi,

2011/12/15 Andrew Wells <agwells0714@xxxxxxxxx>:
> Dear Florian Heigl,

just to make this clear: you're the one that has to do the searching ;)

> I attempted that, and so the
> Virtual System: 39.4 MB/s
>
> Hardware System: 321 MB/s
>
> I think my bottle neck is on the host side... any suggestions?

look for any qemu processes consuming 100% in top output on the host while
you do this benchmark. If you see any, then you're using emulated (very slow)
disk drivers in the VM.

I'd be very surprised if it's something different than that.

florian

-- 
the purpose of libvirt is to provide an abstraction layer hiding all
xen features added since 2006 until they were finally understood and
copied by the kvm devs.

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