<html><head></head><body><div><span style="background-color: rgba(255, 255, 255, 0);">On February 27, 2016 at 18:31:39, mario goebbels (</span><a href="mailto:me@tomservo.cc" style="background-color: rgba(255, 255, 255, 0);">me@tomservo.cc</a><span style="background-color: rgba(255, 255, 255, 0);">) wrote:</span></div><div><blockquote type="cite" class="gmail_quote"><div></div><div><div dir="ltr"><div><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);">It's possible it's the IO. I had similar issues with GTA V in a VM, where its large amounts of IO, due to the game's streaming geometry and textures against my iSCSI disk, got everything in a tizzy, altho it were freezes of a few seconds only. I solved it by using iothreads.</span></font></div><div><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);"><br></span></font></div><div><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);">As far as hugepages go, your kernel is recent enough for transparent hugepages, so you'll be using 2MB hugepages already.</span></font></div><div><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);"><br></span></font></div><div><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);">In regards to the CPU flags, ditch hv_vapic. You have a Haswell, with APICv, which has less overhead in KVM.</span></font></div><div><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);"><br></span></font></div><div><font color="#000000"><span style="background-color: rgba(255, 255, 255, 0);">-mg</span></font></div></div></div></blockquote></div><div><br></div><div>Hi Mario,</div><div><br></div><div>I think Alex had mentioned before in one of the past thread [1], that in case of GPU passthrough (or device assignment in general), transparent hugepages is not beneficial. Instead use traditional hugepages.</div><div><br></div><div>[1] https://www.redhat.com/archives/vfio-users/2015-November/msg00085.html</div><div><br></div><div>Best regards,</div><div>Okky Hendriansyah</div></body></html>