On Fri, 2006-12-15 at 17:20 -0500, Joseph Miller wrote: > I've got a copy of today's CVS, I was just assuming, since this is the > qemu-devel mailing list, that someone on the list who regularly works on > the qemu code would probably know more about this than I do. I have > some assembly background, and I'm not afraid to start digging into x86 > cpu internals, but I would like a starting point. I'm really trying to > figure out something specific about qemu. When running Qemu+KQEMU for > linux-x86 host on WinXP x86 guest, top shows that 70% or more of my cpu > is being use in the system portion. When using vmplayer (free), top > shows less than 5% of my cpu in the system portion. vmplayer seems to > be a LOT faster than Qemu, however I would prefer to use Qemu. I have a > P4 2.6GHz host system with 1.5G RAM and 512MB RAM allocated to my guest > OS's. Does anyone know the reason behind the slowdown? Is anyone > familiar with what Qemu is so busy doing whilst sitting idle? I should > note that I have compiled the KQemu into my 2.6 kernel instead of > loading it as a module. I have found better performance with it this > way. Any insight from a developer would be most appreciated.
Are you using the -kernel-kqemu switch? I see idle usage of 6-10% with kqemu using -kernel-kqemu on windows xp guest. kqemu is closed source software. If you want a starting point for improving the acceleration portion then start by improving qvm86 (the GPL'ed accelerator). _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
