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WCharacter / RDTSC-KVM-Handler

my patches for linux kernel to spoof rdtsc and make vm exit undetected
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Hypervisor disable causing stuttering #3

Closed xiopt closed 3 years ago

xiopt commented 3 years ago

I patched the kernel like in the guide, everything works well, the message is in the kernel logs but when I try running a game (Apex Legends in my case) every time I move the mouse the game stutters like hell. Until I patched the kernel I had the hypervisor feature required in CPU options and everything was working fine but after disabling the stuttering is back. I think the problem is caused by mouse move and the game are competing for the same CPU time. OS: Ubuntu 20.04 Kernel: 5.5 u64 fake_diff = diff / 16; CPU: Intel i7-8700k Here is my win10 guest config: https://pastebin.com/7d0sBjMx

EDIT: It looks like if I lower the mouse polling rate the stuttering is much less present.

xiopt commented 3 years ago

Looks like it's a problem specific for VirtIO Mouse so I am going to close the issue since it's not related to this patch.

EDIT: I am going to reopen the issue since after lots of testing the problem is not from the VirtIO driver. Even if I fix the mouse stuttering, the GPU performance is subpar to when the hypervisor was enabled. Any advice on this matter?

WCharacter commented 3 years ago

I had the same problem on my I7 8700. The problem fixed itself after i reinstalled windows on my virtual machine. I don't know the reason of this stutters, so i can't provide any information about it.