For linux, the build is done by the native Fedora 18 gcc, 4.7.2 For Win32, the build is done by Fedora 18's mingw compiler, 4.7.2
Configuration for Win32 (from config.log): # Configured with: './configure' '--disable-guest-agent' '--disable-vnc' '--disable-werror' '--extra-cflags=-pg' '--extra-ldflags=-pg' '--target-list=i386-softmmu' '--cross-prefix=i686-w64-mingw32-' NOTE: debug is not enabled, since it breaks current QEMU build (undefined references to 'ffs') Configuration for Linux (from config.log): # Configured with: './configure' '--disable-guest-agent' '--disable-vnc' '--disable-werror' '--extra-cflags=-pg' '--extra-ldflags=-pg' '--target-list=i386-softmmu' '--enable-debug' '--enable-kvm' NOTE: although I pass --enable-kvm to configure, I haven't passed it to qemu when running the executables Commandline for running on Win32 (started from a Cygwin terminal) and also with Fedora+Wine: ./qemu/i386-softmmu/qemu-system-i386w.exe -L qemu/pc-bios/ vxworks.img Commandline for running on Fedora: ./qemu/i386-softmmu/qemu-system-i386 -L qemu/pc-bios/ vxworks.img -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1129957 Title: Performance issue running quest image on qemu compiled for Win32 platform Status in QEMU: New Bug description: I'm seeing performance issues when booting a guest image on qemu 1.4.0 compiled for the Win32 platform. The same image boots a lot faster on the same computer running qemu/linux on Fedora via VmWare, and even running the Win32 exectuable via Wine performs better than running qemu natively on Win32. Although I'm not the author of the image, it is located here: http://people.freebsd.org/~wpaul/qemu/vxworks.img All testing has been done on QEMU 1.4.0. I'm also attaching a couple of gprof logs. For these I have disabled ssp in qemu by removing "-fstack-protector-all" and "-D_FORTIFY_SOURCE=2" from the qemu configure script. qemu-perf-linux.txt ================ Machine - Windows XP - VmWare - Fedora - QEMU qemu-perf-win32.txt ================= Machine - Windows XP - QEMU qemu-perf-wine.txt ================ Machine - Windows XP - VmWare - Fedora - Wine - QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1129957/+subscriptions
