On Wed, May 19, 2010 at 12:02 AM, Ben Pfaff <b...@nicira.com> wrote: > On Tue, May 18, 2010 at 10:39:15PM -0400, Todd Deshane wrote: >> Maybe it would be useful to have a INSTALL.KVM? >> >> It would be the same as INSTALL.Linux, except for at the end, a >> description of using the custom ifup and ifdown scripts on the kvm >> command line. > > I agree that adding an INSTALL.KVM is a good idea. I think that we at > Nicira have limited experience with KVM integration yet. Is there any > chance that you could start us off with a draft for this new file? I'll > gladly add it, if I have something to add. >
Sure. I'll send a draft along soon. > Instead of duplicating (most of?) INSTALL.Linux, I would rather refer to > it. Then, if it changes, it only has to be changed in one place. > > That's good to know. > > There are some benchmarks, of an older version of OVS, in the paper > posted on the Documentation page at openvswitch.org. > > It's been a while since we've carefully looked at OVS numbers versus the > Linux bridge. If you find any big discrepancies, please let us know, so > that we can see about fixing them. > > (Have you tried making a graph like that in the OVS paper? I am curious > to see whether others also see the anomalies shown in the graph at 192 > kB and 4 MB transfer sizes.) > I have a set of scripts that allow me to move from ovs to bridging easily (I'll post more on these later). Attached are some results. I ran: netpipe-tcp 3.7.1-1 (from the Ubutnu 10.04 package) KVM guest to KVM guest on two computers hooked together by a cross-over with gigabit NICs. I ran the tests a few times and the numbers look very similar. One graph is ovs and one is a standard bridge. I'll follow up with more details and also the INSTALL.KVM draft soon. Thanks, Todd -- Todd Deshane http://todddeshane.net http://runningxen.com
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