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Re: [Xen-users] Is my xen-friendly glibc really faster?


  • To: "Chris Fanning" <christopher.fanning@xxxxxxxxx>
  • From: "Nicholas Lee" <emptysands@xxxxxxxxx>
  • Date: Sat, 25 Feb 2006 10:42:18 +1300
  • Cc: Ernst Bachmann <e.bachmann@xxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 24 Feb 2006 21:42:48 +0000
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On 25/02/06, Chris Fanning <christopher.fanning@xxxxxxxxx> wrote:
> Hi Ernst,
>
> > If you run them in a domU, my guess would be the slowdown is caused by your
> > VNC/NX/remote X11 connection, not from the processing in domU.
>
> I had exported nfs:/home from another domU. When I moved the home
> export to dom0 performance improved a lot.
> Perhaps this is because of some disk access bottleneck cause buy KDE
> Dcop or IPC or Unix sockets or something when running the home is on
> another domU.
>
> What do you think?

This was my experience as well. I discovered with Xen 2.0 using NX and
domU NFS home to another domU, that firefox cause the most drag on the
system. In general though everything was sluggish.

Moving the home dir to dom0 or native lvm device mount made that
problem go away.

The new 3.0 SMP domUs will probably be better. I haven't had time to
experience test this yet though.


--
Nicholas Lee
http://stateless.geek.nz
gpg 8072 4F86 EDCD 4FC1 18EF  5BDD 07B0 9597 6D58 D70C

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