<html><head></head><body><div><span style="background-color: rgba(255, 255, 255, 0);">On February 28, 2016 at 02:00:54, ben j (</span><a href="mailto:btpprograms@gmail.com" style="background-color: rgba(255, 255, 255, 0);">btpprograms@gmail.com</a><span style="background-color: rgba(255, 255, 255, 0);">) wrote:</span></div><div><blockquote type="cite" class="gmail_quote"><div></div><div><p dir="ltr"><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);">I've narrowed it down to a cpu issue, I was giving 6 cores (I only have 6) to the VM and from looking at htop it seems to start lagging from major cpu spikes. For a moment Skype spikes to 250% cpu usage when it launches which would explain why it triggered the issue. Is there a steadfast rule for cpu allocation to gaming VM's? So far 6 has been unstable, 3 has always been choppy on boot, and 4 seems fairly stable but has still occasionally gotten choppy. I'm currently testing 5 but I expect it will be worse than 4. I'm also only currently running at 3.3GHz and could easily overclock to ~3.9 if that would make a big difference. I find it difficult to believe that it's not just an optimization issue though since I've never had any issues with this cpu before.</span></font></p></div></blockquote></div><div><br></div>Hi Ben,<div><br></div><div>My first thought is, have you tried enabling MSI on the guest? [1] </div><div><br></div><div>What kernel is the host running? Although kernel 4.4.x should fix the utterly slow boot, my guest still suffer from it when I set the guest memory > 8 GB. Which when I set the host kernel back to 4.1.x, I never encountered this issue. </div><div><br></div><div>Another issue that I noticed with kernel 4.4.x, is that the CPU usage when playing any sorts of audio, be it from games or even iTunes loads a very high CPU usage (around 70%), whilst quite low at kernel 4.1.x (around 30%). </div><div><br></div><div>So if your kernel is at 4.4.x now, can you try using 4.1.x?</div><div><br></div><div>[1] http://vfio.blogspot.com/2014/09/vfio-interrupts-and-how-to-coax-windows.html</div><div><br></div><div>Best regards,</div><div>Okky Hendriansyah</div></body></html>