[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Very poor VMX performance
>Casey Jeffery <kcjeffery@xxxxxxxxx> wrote on 02/09/2006 11:52:03 PM: > >> After several days of problems, I finally got Xen 3.0.1 set up in >> Ubuntu Breezy with the 2.6.12 kernel on a VT-enabled system with an >> Intel 930 processor and 2GB of memory. >> >> I have been able to install an unmodified guest without any issues >> other than performance. The guest runs extremely slowly and the >> mouse and keyboard are all but useless because of the extreme lag. >> I've tried multiple viewers (vncviewer 3.3, 4.0, and tightvnc), as >> well as low color depths. I am currently using a file-backed image >> file, as was recommended in the user's manual, but I don't know of >> any other item that could be causing such poor performance. I don't >> see anything about this in the archives and am open to any >suggestions > >Are you running Xen in x86-64 mode ? We found that the performance >of unmodified guests on x86-64 Xen is very slow, mostly in the video >area. We will reenable the VGA acceleration soon, since 1:1 pagetable has been removed from control panel. -Xin > However, if you run unmodified guests in pure 32-bit >Xen (x86-32), then the guest performance is quite acceptable - for >both Windows and Linux guests. Some have noticed that the guest >performance is a bit better using SLD (instead of vnc). Of course, >"acceptable" is in the eyes of the beholder :-) > >Regards, >Khoa > > >_______________________________________________ >Xen-devel mailing list >Xen-devel@xxxxxxxxxxxxxxxxxxx >http://lists.xensource.com/xen-devel > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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