On Thu, Jan 21, 2010 at 04:39:31PM -0500, Ryan Pugatch wrote: > Pasi Kärkkäinen wrote: > >> Oh, one more thing.. is it only the guest VM taking cpu time when you >> monitor with "xm top"? >> >> Do you have the latest service packs installed in the guest? >> >> Have you tried monitoring the performance from inside the guest, to >> figure out what takes cpu time there? >> >> -- Pasi >> > > > The guest is running XP w/ SP3. It is not just the guest VM taking cpu > time. Basically, whatever process I am doing hits 100% cpu usage in > Windows. If I open IE, it will use 100% cpu for a bit while it opens. > If I try to click on a website, it will do it again. Thus, it is > causing a very sluggish session as it keeps pausing. It isn't just IE, > it's any program I try to use. This CPU usage is reflected in xm top as > both the guest's CPU% will hit 100% as will Dom-0. > Did you verify from Windows Task Manager you're actually using the GPLPV PV drivers/devices? How do you use the WinXP guest? Through the VNC console, or by using RDP over the network? RDP is recommended, since it's much faster. Does WinXP have high IOwait? > I have done pretty much everything specified in the Xen Best Practices. > In fact, I have dedicated 4GB to Dom-0. > Dom0 only needs 512 MB - 1024 MB (imho) on a common machine. -- Pasi