 Home |
Products |
Support |
Community |
News |
xen-devel
RE: [Xen-devel] poor domU VBD performance.
| To: | "Andrew Theurer" <habanero@xxxxxxxxxx>, "Peter Bier" <peter_bier@xxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-devel] poor domU VBD performance. |
| From: | "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> |
| Date: | Mon, 28 Mar 2005 23:17:20 +0100 |
| Delivery-date: | Mon, 28 Mar 2005 22:17:34 +0000 |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcUz3+oHgn40pAT6RGS6FvczoEPfvgAA5r6A |
| Thread-topic: | [Xen-devel] poor domU VBD performance. |
> tried xen-2.0.5 and xen-unstable with a sequential read test > using 256k > request size and 8 reader threads with o_direct on a > lvm-raid-0 scsci array > (no HW cache) and got: > > xen-2-dom0-2.6.10: 177 MB/sec > xen-2-domU-2.6.10: 185 MB/sec > xen-3-dom0-2.6.11: 177 MB/sec > xen-3-domU-2.6.11: 185 MB/sec Please can you try a simple 'dd if=/dev/sdaXX of=/dev/null bs=1024k count=4096' to read 4GB from the partition both in dom0 and domU. When booting, I get the following output, which I presume is the default? elevator: using anticipatory as default io scheduler Thanks, Ian _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| Previous by Date: | Re: [Xen-devel] poor domU VBD performance., Andrew Theurer |
|---|---|
| Next by Date: | Re: [Xen-devel] IMPORTANT: Mailing list closed, James Bulpin |
| Previous by Thread: | Re: RE: [Xen-devel] poor domU VBD performance., Kurt Garloff |
| Next by Thread: | [Xen-devel] Re: poor domU VBD performance., peter bier |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
