Christian Zoffoli
2009-Oct-01 22:17 UTC
[Xen-users] AMD SR5690/SP5100 + 2.6.31 + pv_ops = bad domU performances
Hello, I''m testing a new supermicro motherboard with a couple of AMD istanbul + AMD SR5690/SP5100 chipset and I''ve experienced very bad perfomance on domUs. The dom0 is based on 2.6.31 (jeremy tree) and the domU is a debian lenny. For example testing dom0 net with iperf I can see ~950 Mbit/s but testing the domU I can see only 197 kbits/s. Testing disk perfomance I''ve ~ 70MB/s on dom0 and ~22 MB/s on domU. Do you have any suggestion? Best regards, Christian _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Fajar A. Nugraha
2009-Oct-01 22:33 UTC
Re: [Xen-users] AMD SR5690/SP5100 + 2.6.31 + pv_ops = bad domU performances
On Fri, Oct 2, 2009 at 5:17 AM, Christian Zoffoli <czoffoli@xmerlin.org> wrote:> The dom0 is based on 2.6.31 (jeremy tree) and the domU is a debian lenny. > > For example testing dom0 net with iperf I can see ~950 Mbit/s but > testing the domU I can see only 197 kbits/s. > > Testing disk perfomance I''ve ~ 70MB/s on dom0 and ~22 MB/s on domU. > > Do you have any suggestion?See jeremy''s latest reply on this list. They''re still narrowing down the problem. As a work around, you should be able to use old-style kernel-xen on dom0. I''m using RHEL5''s kernel-xen and domU performance (both disk and network) is great. -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Christian Zoffoli
2009-Oct-02 21:18 UTC
Re: [Xen-users] AMD SR5690/SP5100 + 2.6.31 + pv_ops = bad domU performances
Fajar A. Nugraha ha scritto: [cut]> See jeremy''s latest reply on this list. They''re still narrowing down > the problem. > > As a work around, you should be able to use old-style kernel-xen on > dom0. I''m using RHEL5''s kernel-xen and domU performance (both disk and > network) is great.I cannot find the email on this list, could you give me a link on a public archive? Best regards, Christian _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Fajar A. Nugraha
2009-Oct-03 11:13 UTC
Re: [Xen-users] AMD SR5690/SP5100 + 2.6.31 + pv_ops = bad domU performances
On Sat, Oct 3, 2009 at 4:18 AM, Christian Zoffoli <czoffoli@xmerlin.org> wrote:> Fajar A. Nugraha ha scritto: > [cut] >> See jeremy''s latest reply on this list. They''re still narrowing down >> the problem. >> >> As a work around, you should be able to use old-style kernel-xen on >> dom0. I''m using RHEL5''s kernel-xen and domU performance (both disk and >> network) is great. > > I cannot find the email on this list, could you give me a link on a > public archive?http://lists.xensource.com/archives/html/xen-users/2009-09/msg00243.html http://www.nabble.com/About-profiling-xen-td25675480.html -- Fajar _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users