For some reason I’m getting lag on Age of Empires 2 offline with hd 5850 and 16 gb of ram given to vm. Pretty sure that’s more than enough. Quake 3 works without any lag if that’s an indicator. VM OS is running off an ssd baremetal install.
Diablo 3 used to stutter at regular intervals with a r9 280 instead of hd 5850, rest of configuration is the same.
I have a feeling my cpu stuff is off in virt manager. I have set it in in different configs under Opteron g5 with 6/1/1, 6/1/6, 8/1/1, and all give same results.
Anybody know what model or other crap to tweak to have better cpu performance with that 8320? I get the same issues with pci-stub or with vfio passthrough.
I spent about 2 weeks trying to optimize my 8350 trying every combination of tweeks I could find in forums and mailing lists with little avail. I got it to a point were it could play some games but perfomance was mediocre at best. I just had to bite the financial bullet and upgrade.
From my experience I would say that the 8320 is not good enough (altough, on paper, it seems like it should be) to play games via PCI passthrough. I really should have documented what I tested but sadly didn’t. Appologies for not being any help at all, but I may save you some pain trying to get this working.
Best of luck with it. If you mange to get it running well let me know.
Well if you apply the npt patch it’ll fix all your fps and stuttering issues. Well I think at least.
For me playing League of Legends on aram (Which is most intense map so far) has about 80 - 120 FPS depending on intensity of the scene and no noticeable stutter.
I have the same CPU, FX 8320 @ 4.5 Ghz and I have 2 - 7 pinned cpu(count from 0) to my guest + vfio passthrough on my RX 480.
I leave 0 and 1 for the host system for background task and other stuff(smb, plex, zfs etc…).
These cpu’s (2-7) are isolated from the host system. It’s something to try out.
Below are benchmarks I did before and after NPT patch. Sample size of 1 out of 5 for either the test.
Also I used shitty version GT 640 , this was before I made my server with virtualization as my main rig.
