On Fri, Feb 09 2007, Fabrice Bellard wrote: > Kuniyasu Suzaki wrote: > > [...] > > >>2) For best performances with kqemu, it is better to use Linux 2.4 as > > >>guest OS (I know this is far from acceptable, but it can help some > > >>people to get better performance !). > > > >Please tell me the reason why Linux 2.4 shows better performance, if > >you have time. Does the difference of clock tick cause the problem? > > The Linux 2.6 kernel has more code running with the interrupts disabled > than the 2.4 one. kqemu interprets the x86 code when the interrupts are > disabled, so it is very slow in this case. > > A potential solution I am investigating is to use the new > paravirtualization API of the kernel versions >= 2.6.20.
That'd be a great idea! -- Jens Axboe _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
