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xen-devel
RE: [Xen-devel] MYSQL bechmark results on XEN and NFS
Have you tested mysql on iSCSI disks? If not I can do so using athlon
2000+ xen host and iscsi target servers over 100Mbps ethernet if you can
toss me your testing scripts. :)
On Mon, 2005-01-24 at 23:22 +0000, Ian Pratt wrote:
> > I am trying to setup mysql on XEN. I need to set it up on
> > NFS so I can migrate the domain when needed.
>
> I'd use GNBD rather than NFS in situations where performance matters.
>
> Also, you should be using 2.0-testing for benchmarking purposes until we
> push out 2.0.4, as the default kernel config had debugging turned on in
> 2.0.1-3.
>
> Ian
>
> >
> >
> > I am getting unexpected results and wanted to get some feedback.
> >
> >
> >
> > Here is my setup:
> >
> >
> >
> > 1. NFS server
> >
> > Dual 2.0 Ghz AMD Opteron
> >
> > 2GB of RAM
> >
> > Broadcom GB NIC
> >
> > Standard Fedora Core 3 (FC3)
> >
> > Mysql w/tpc-c medium databases on the NFS share
> >
> > XenU filesystem on the NFS share
> >
> >
> >
> > 2. Xen machine
> >
> > Dual 2.0 Ghz AMD Opteron
> >
> > 2GB of RAM
> >
> > Broadcom GB NIC
> >
> > FC3 w/XEN kernel patch
> >
> > Dom0 = 512MB RAM
> >
> > DomU = 512MB RAM
> >
> >
> >
> > 3. TPC-C client
> >
> > PIII 2.0 Ghz
> >
> > 512 MB RAM
> >
> > Standard Fedora Core 2
> >
> > TCP-C client
> >
> >
> >
> > Results using the tpc-c benchmark:
> >
> > Baseline ~3300 new-ops per second
> >
> > Machine 2 booted to the standard FC3
> >
> > Xen0 ~ 1700 new-ops per second
> >
> > Machine 2 booted to Xen kernel with 512MB of RAM
> >
> > XenU ~500 new ops per second
> >
> > Machine 2 booted to Xen kernel with 512MB of RAM
> >
> > DomU booted from NFS share with 512MB of RAM
> >
> >
> >
> > Am I missing something here or is that much degradation
> > expected when booting a virtual machine over NFS.
> >
> > __________________________________________________
> > Do You Yahoo!?
> > Tired of spam? Yahoo! Mail has the best spam protection around
> > http://mail.yahoo.com
> >
>
>
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