Hi, My previous patch is not enough to use windbg. A rate of loop in main_loop in vl.c drops a lot.
The rate does not drop for Fedora Core 4 guest but not good for RedHat 7.2 and Windows 2000. It is expected at least 1000 cycles/sec, but the rate drops to 130 cycles/sec while CPU load is high. It is the case while OS is booting. The rate is slow so that a communication through serial line is slow. I made a workaround for it and checked the data sending/receiving rate by it. The patch exits CPU loop in cpu_exec every 100 times and handle I/O of serial data. The rate of loop in main_loop is about 30000 cycles/sec. Win2k booting time with windbg is much improved. The patch is not efficient so it can only be used for windbg. It seems that cpu_interrupt does not work while CPU load is high depending on a guest OS. Binary. http://www.h6.dion.ne.jp/~kazuw/qemu-win/qemu-0.8.2-windbg.zip Patch. http://www.h7.dion.ne.jp/~qemu-win/download/qemu-20060730-windbg.patch Regards, Kazu _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel
