Re: [Xen-users] Disk performance

[Bart Coninckx <bart.coninckx@xxxxxxxxxx>]

----- Original message -----
>
> On 03/07/10 15:43, Bart Coninckx wrote:
> > On Saturday 03 July 2010 15:17:13 Jonathan Tripathy wrote:
> >     
> > > Hi Everyone,
> > >
> > > My Xen host has 2 X 1TB hard drives in a RAID1 setup. If one DomU starts
> > > to dd a 5GB file (A ran it in a loop as a test), access ssh on the other
> > > DomU becomes very slow.
> > >
> > > Is this normal?
> > >
> > > Many Thanks
> > >
> > > _______________________________________________
> > > Xen-users mailing list
> > > Xen-users@xxxxxxxxxxxxxxxxxxx
> > > http://lists.xensource.com/xen-users
> > >
> > >         
> > I think this can be expected with things like a dd which could hog the disk
> > bandwidth. Do a bonnie++ benchmark to see what the disk can do and then do a
> > iotop while you are doing the dd and you will see how much is consumed and how
> > much is left for the other DomUs.
> >
> > B.
> >     
>
> I'm using centos as my Dom0. iotop doesn't seem to be available for
> Centos, and I don't think my kernel has the correct modules for dstat to
> work in a similar manner to iotop. Any other ideas? Could I just run
> iotop in a Ubuntu DomU? Would that give me correct results?
>
> Thanks

compiling it from source?

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users