Hi, Could you please provide URL to download that image so that I could reproduce this problem ? Also, qemu command line would be nice.
btw, I won't be able to look into this during next week, so some help from someone else would be nice. I'll try to take a look later today however... On 05/16/2014 09:00 AM, Stefan Weil wrote: > Am 09.05.2014 20:57, schrieb Stefan Hajnoczi: >> On Thu, May 08, 2014 at 12:47:10PM +0400, Stanislav Vorobiov wrote: >>> From: Sangho Park <sangho1206.p...@samsung.com> >>> >>> g_poll has a problem on Windows when using >>> timeouts < 10ms, in glib/gpoll.c: >>> >>> /* If not, and we have a significant timeout, poll again with >>> * timeout then. Note that this will return indication for only >>> * one event, or only for messages. We ignore timeouts less than >>> * ten milliseconds as they are mostly pointless on Windows, the >>> * MsgWaitForMultipleObjectsEx() call will timeout right away >>> * anyway. >>> */ >>> if (retval == 0 && (timeout == INFINITE || timeout >= 10)) >>> retval = poll_rest (poll_msgs, handles, nhandles, fds, nfds, timeout); >>> >>> so whenever g_poll is called with timeout < 10ms it does >>> a quick poll instead of wait, this causes significant performance >>> degradation of QEMU, thus we should use WaitForMultipleObjectsEx >>> directly >>> >>> Signed-off-by: Stanislav Vorobiov <s.vorob...@samsung.com> >>> --- >>> include/glib-compat.h | 9 +++- >>> util/oslib-win32.c | 112 >>> +++++++++++++++++++++++++++++++++++++++++++++++++ >>> 2 files changed, 120 insertions(+), 1 deletion(-) >> >> Thanks, applied to my block tree: >> https://github.com/stefanha/qemu/commits/block >> >> Stefan >> > > > > Hi, > > the patch breaks hard disk i/o: a 64 bit executable built with MinGW-w64 > will no longer boot a ReactOS image (BIOS fails to detect a bootable > disk). Booting a Linux CDROM seems to work and is indeed much faster. > > Regards > Stefan > >
