http://bugzilla.suse.com/show_bug.cgi?id=1092035 http://bugzilla.suse.com/show_bug.cgi?id=1092035#c13 --- Comment #13 from James Wang --- (In reply to magist3r sergei from comment #12)

cpuid -1 -l 7 -s 0 -r: CPU: 0x00000007 0x00: eax=0x00000000 ebx=0x00000281 ecx=0x00000000 edx=0x0c000000

Just did some additional tests. Looks like that CPU degradation is caused by Windows 10 host only. Any other VM's (openSUSE, Mint, even Windows 7) don't win10 guest ? I believe it's win10 guest. otherwise, why you file a bug in SUSE bugzilla, ;-).

Maybe we could install a win10 on our testing box.

cause this.

But with plain IvyBridge profile Windows 10 works fine.

...

One thing to note is that my data for "Single-Core Score" are all about 2000, but I see one of your data is about 4000, that is no guests running on the host. So one suggestion is to check whether ucode-intel/qemu/libvirt is also the latest. :)

I have installed all available updates for openSUSE Leap 42.3 as usual. My CPU is i7-3770 quadcore, maybe it's faster in single core scenario.

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