Hello Mahmood, That's because Qemu by default presents each CPU with it's own Socket and Non-Server Windows (because of Licensing Reasons) supports only one Socket. You should set it like: -smp cpus=1,cores=5 See https://qemu.weilnetz.de/doc/qemu-doc.html#index-_002dsmp
Regards, Lukas Straub On Sun, 2 Dec 2018 18:38:04 +0000 (UTC) Mahmood Naderan <[email protected]> wrote: > Hi, > I use the following command. Although I have specified 5 cores, in > the windows guest, I see only one core in the task manager. May I > know what is wrong? qemu-system-x86_64 -smp 5 -m 4096 -cpu Opteron_G5 > -hda qemu-vm/win7_64.img -boot c -usbdevice tablet -enable-kvm > -device e1000,netdev=host_files -netdev > user,net=10.0.2.0/24,id=host_files,restrict=off,smb=/export/home/theuser,smbserver=10.0.2.4 > > > Regards, > Mahmood
