Hi, I''ve noticed that in dom0 I can practically max out my bandwidth, but in domU it''s limited to about half of it. What should I do to improve that? :) -- fd0 _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Tuesday 20 September 2005 21:28, fd0 wrote:> I''ve noticed that in dom0 I can practically max out my bandwidth, > but in domU it''s limited to about half of it. > What should I do to improve that? :)check the ifconfig output of your vif devices for TX / RX errors, most likely those are what limits your bandwith.... to fix it, upgrade to xen-3/unstable (I haven''t tested, but I really hope that xen-3 will have reliable networking), don''t max out your bandwith in domU, or try some of the tweaks described in the recent threads about "ssh hanging", "nfs failing", "ping packet loss", etc... Using a SMP machine and assigning different CPUs to domU and dom0 might also help a lot. /Ernst _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
When you say "recent threads", what are you speaking of? I am having the ssh hanging issue and could use a URL to point me in the right direction. Thanks, Jon Ernst Bachmann wrote:>On Tuesday 20 September 2005 21:28, fd0 wrote: > > >>I''ve noticed that in dom0 I can practically max out my bandwidth, >>but in domU it''s limited to about half of it. >>What should I do to improve that? :) >> >> > >check the ifconfig output of your vif devices for TX / RX errors, most likely >those are what limits your bandwith.... > >to fix it, upgrade to xen-3/unstable (I haven''t tested, but I really hope that >xen-3 will have reliable networking), don''t max out your bandwith in domU, or >try some of the tweaks described in the recent threads about "ssh hanging", >"nfs failing", "ping packet loss", etc... > >Using a SMP machine and assigning different CPUs to domU and dom0 might also >help a lot. > >/Ernst > >_______________________________________________ >Xen-users mailing list >Xen-users@lists.xensource.com >http://lists.xensource.com/xen-users > > >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
At 12:28 PM 9/20/2005, fd0 wrote:>I''ve noticed that in dom0 I can practically max out my bandwidth, >but in domU it''s limited to about half of it. >What should I do to improve that? :)On my vif-routed domU''s, I added qdisc to improve outbound traffic. See this thread: http://lists.xensource.com/archives/html/xen-devel/2005-09/msg00196.html It might work for bridged networking also. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On Tuesday 20 September 2005 22:04, Jonathon Jones wrote:> When you say "recent threads", what are you speaking of? I am having > the ssh hanging issue and could use a URL to point me in the right > direction.Maybe start with these threads: http://lists.xensource.com/archives/html/xen-users/2005-07/msg00373.html http://lists.xensource.com/archives/html/xen-users/2005-08/msg00209.html http://lists.xensource.com/archives/html/xen-users/2005-07/msg00708.html There have been a few more about the same topic afterwards, you should be able to find them if you search for "network" or "ping" in the archives. /Ernst _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users