On Fedora 19/x86_64, Xeon 4cores/8threads, 8GB RAM I have in a VM installed windows 2000 (full qemu cmdline see below). What is weird, 'top' on host show that all 4 threads load CPU at 100% each. On guest are running only minimum processes and windows task manager show load 0-2%; virtual machine is almost idle. VM itself seems react well, its responses are fine. Please, how is possible debug this issue? /usr/bin/qemu-system-x86_64 -machine accel=kvm -name w2kf19sp4N-ide -S -machine pc-i440fx-1.4,accel=kvm,usb=off -m 4096 -smp 4,sockets=1,cores=2,threads=4 -uuid 1934a452-a128-cf42-2b83-d8943cf9ad3e -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/w2kf19sp4N-ide.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=localtime -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/mnt/zalohy/virtualy/w2kf19sp2New-ide.img,if=none,id=drive-ide0-0-0,format=raw -device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 -netdev tap,fd=24,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:54:ec:4f,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -device usb-tablet,id=input0 -vnc 127.0.0.1:0 -vga std -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 TIA, Franta Hanzlik -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org