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<p>I can share my experience. I had FX-8350 / Sabertooth 990FX R.2 /
R9 270X. At first i could play titanfall fine. Then after some
kernel updates which coincided with my hardware having a warranty
trip it started to stutter. No matter what i did lag remained to
be just enough that it was unplayable. I tried bf3 after stutters
began and it was unplayable. No matter what i tried nothing helped
so i too ended up dual-booting until i replaced my hardware with
GA-X99-UD4 / i7-6800K / GTX 1080. Now i play bf1 without issues.<br>
</p>
<pre class="moz-signature" cols="72">Rokas Kupstys</pre>
<div class="moz-cite-prefix">On 23/01/17 21:55, Andrei Grigore
wrote:<br>
</div>
<blockquote
cite="mid:CAGRe5_6sNRLgnosdWH8Kkr5rN2tW9L7dzy9C+0bx3bN7rufG-w@mail.gmail.com"
type="cite">
<div dir="ltr">I had the same issues and I solved them by
installing Windows 10 on bare metal. I am really interested if
there is a fix for this. From my research, (I've spent 2 full
months in trying to find all kinds of causes and fixes) I've
just come to the conclusion that somehow the AMD CPU and/or the
Motherboard IOMMU is the root cause and you just can't fix it
from the configuration side of things. I guess it would also be
hard to provide a fix for QEMU/Kernel KVM since there is no easy
way to reproduce it, or by the fact that mostly everything is
optimized for the Intel platform.
<div><br>
</div>
<div>My Configuration: AMD FX-8320, 990FXA-UD3 (Rev. 3.0), GTX
970.<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Jan 23, 2017 at 8:02 PM,
Alex Williamson <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:alex.l.williamson@gmail.com"
target="_blank">alex.l.williamson@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">[Please copy the mailing list, use
reply-all. The mailing list is not intended to spawn
private conversations]
<div class="gmail_extra"><br>
<div class="gmail_quote">On Mon, Jan 23, 2017 at
11:30 AM, <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:itvend@gmail.com" target="_blank">itvend@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0px
0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div lang="ET">
<div
class="m_2382996401186003540gmail-m_-2794782374360300466WordSection1">
<p class="MsoNormal">I have no clue what to
Google even. All cpu pinning topics are
for virt</p>
</div>
</div>
</blockquote>
<div><br>
</div>
<div>isolcpus</div>
<div><a moz-do-not-send="true"
href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/kernel-parameters.txt#n1669"
target="_blank">http://git.kernel.org/cgit/<wbr>linux/kernel/git/torvalds/<wbr>linux.git/tree/Documentation/<wbr>admin-guide/kernel-parameters.<wbr>txt#n1669</a><br>
</div>
<div><br>
</div>
<div>libvirt vcpu pinning</div>
<div><a moz-do-not-send="true"
href="https://libvirt.org/formatdomain.html#elementsCPUTuning"
target="_blank">https://libvirt.org/<wbr>formatdomain.html#<wbr>elementsCPUTuning</a><br>
</div>
<div><br>
</div>
<div>libvirt hugepage support</div>
<div><a moz-do-not-send="true"
href="https://libvirt.org/formatdomain.html#elementsMemoryTuning"
target="_blank">https://libvirt.org/<wbr>formatdomain.html#<wbr>elementsMemoryTuning</a><br>
</div>
<div><br>
</div>
<div>man irqbalance</div>
<div><br>
</div>
<div>If you intend to continue using the QEMU
commandline directly, be prepared to do your own
research, libvirt is common way to do these
things. Thanks,</div>
<div><br>
</div>
<div>Alex</div>
<div><br>
</div>
<div><br>
</div>
<blockquote class="gmail_quote" style="margin:0px
0px 0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div lang="ET">
<div
class="m_2382996401186003540gmail-m_-2794782374360300466WordSection1"><span
class="m_2382996401186003540gmail-">
<p class="MsoNormal"> </p>
</span>
<div
style="border-right:none;border-bottom:none;border-left:none;border-top:1pt
solid rgb(225,225,225);padding:3pt 0cm
0cm">
<p class="MsoNormal"
style="border:none;padding:0cm"><b>Saatja:
</b><a moz-do-not-send="true"
href="mailto:alex.l.williamson@gmail.com"
target="_blank">Alex Williamson</a><br>
<b>Saadetud: </b>esmaspäev, 23. jaanuar
2017 19:18<span
class="m_2382996401186003540gmail-"><br>
<b>Adressaat: </b><a
moz-do-not-send="true"
href="mailto:itvend@gmail.com"
target="_blank">Tiit Talts</a><br>
<b>Koopia: </b><a
moz-do-not-send="true"
href="mailto:vfio-users@redhat.com"
target="_blank">vfio-users</a><br>
<b>Teema: </b>Re: [vfio-users]
Stutter in games</span></p>
</div>
<div>
<div class="h5">
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">[re-adding
vfio-users]</p>
<div>
<div
class="m_2382996401186003540gmail-h5">
<div>
<p class="MsoNormal"> </p>
<div>
<p class="MsoNormal">On Mon,
Jan 23, 2017 at 10:11 AM,
<<a
moz-do-not-send="true"
href="mailto:itvend@gmail.com"
target="_blank">itvend@gmail.com</a>>
wrote:</p>
<blockquote
style="border-top:none;border-right:none;border-bottom:none;border-left:1pt
solid
rgb(204,204,204);padding:0cm
0cm 0cm
6pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class="MsoNormal">QEMU
command is :</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">#!/bin/bash</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
PARAMS
##############################<wbr>##############################</p>
<p class="MsoNormal">CMD="-name
vm2 -enable-kvm"</p>
<p class="MsoNormal">CMD="$CMD
-machine
type=pc,accel=kvm,kernel_irqch<wbr>ip=on,mem-merge=off"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">CMD="$CMD
-rtc
base=localtime,clock=host,drif<wbr>tfix=none"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">CMD="$CMD
-drive
if=pflash,format=raw,readonly,<wbr>file=/usr/share/ovmf/OVMF_CODE<wbr>.fd"</p>
<p class="MsoNormal">CMD="$CMD
-drive
if=pflash,format=raw,file=/roo<wbr>t/vm/vm2.fd"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
CPU
##############################<wbr>##############################
+nx</p>
<p class="MsoNormal">CMD="$CMD
-cpu
host,kvm=off,hv_time,hv_relaxe<wbr>d,hv_vapic,hv_spinlocks=0x1fff<wbr>,hv_vendor_id=Nvidia43FIX
-smp cores=6"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
MEM
##############################<wbr>##############################</p>
<p class="MsoNormal">CMD="$CMD
-m $((8*1024))" ##
HOST HAS 16GB</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
PCI-E
##############################<wbr>##############################</p>
<p class="MsoNormal">CMD="$CMD
-device
vfio-pci,host=01:00.0,multifun<wbr>ction=on"</p>
<p class="MsoNormal">CMD="$CMD
-device
vfio-pci,host=01:00.1"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">CMD="$CMD
-device
vfio-pci,host=02:00.0"
## USB 3.0 EATRON</p>
<p class="MsoNormal">CMD="$CMD
-device
vfio-pci,host=04:00.0"
## USB 3.0 EATRON</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
NET
##############################<wbr>##############################</p>
<p class="MsoNormal">CMD="$CMD
-net nic,model=virtio
-net
bridge,br=bridge0"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
DRIVES
##############################<wbr>##############################</p>
<p class="MsoNormal">CMD="$CMD
-device
virtio-blk-pci,drive=device_bl<wbr>k_one"</p>
<p class="MsoNormal">CMD="$CMD
-drive
file=/dev/mapper/debian--vg-wi<wbr>ndows,format=raw,if=none,aio=<wbr>native,cache.direct=on,cache=<wbr>none,id=device_blk_one"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
OTHER
##############################<wbr>##############################</p>
<p class="MsoNormal">CMD="$CMD
-monitor stdio"</p>
<p class="MsoNormal">CMD="$CMD
-display none"</p>
<p class="MsoNormal">CMD="$CMD
-vga none"</p>
<p class="MsoNormal">CMD="$CMD
-nodefaults
-nodefconfig"</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">##
STAR OF THE SHOW</p>
<p class="MsoNormal">qemu-system-x86_64
$CMD</p>
<p class="MsoNormal"> </p>
</div>
</div>
</blockquote>
<div>
<p class="MsoNormal"> </p>
</div>
</div>
</div>
</div>
</div>
</div>
<div>
<div
class="m_2382996401186003540gmail-h5">
<p class="MsoNormal">So the good
news is you're already leaving 2
cores for the host, the bad news
is that the next level of tuning
you need to do is very difficult
when using QEMU directly from the
commandline. libvirt makes is so
much easier. </p>
<p class="MsoNormal"> </p>
</div>
</div>
</div>
</div>
</div>
<br>
<span class="m_2382996401186003540gmail-"><br>
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Seda e-posti on pahavara suhtes
Avast viirusetõrjega kontrollitud.
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</div>
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</div>
</div>
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<pre wrap="">_______________________________________________
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