<div dir="ltr">Using this mode,<div> </div><div>DPC Latency is hugely buggy using this mode.</div><div> </div><div>My fps are also moving on an apocaliptic way: from 80 to 45 fps without moving on ungine valley.</div><div> </div><div>Do you have anything working on your linux? (i have plasma doing nothing on another screen)</div><div> </div><div>Ungine heaven went back to 2600 points from 3100</div><div>Cinebench r15: single core 124</div><div> </div><div> </div><div>Could you please send your whole xml file, qemu version and kernel config / boot?</div><div> </div><div>I will try to get 3dmark and verify host / virtual comparison</div></div><div class="gmail_extra"> <div><div class="gmail_signature"><div dir="ltr">--<div>Deldycke Quentin </div><div><div> </div></div></div></div></div> <div class="gmail_quote">On 9 January 2016 at 20:24, Milos Kaurin <<a href="mailto:milos.kaurin@gmail.com" target="_blank">milos.kaurin@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">My details: Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz 32GB total ram hugetables@16x1GB for the guest (didn't have much to do with 3dmark results) I have had the best performance with: <vcpu placement='static'>8</vcpu> <cpu mode='custom' match='exact'> <model fallback='allow'>host-passthrough</model> <topology sockets='1' cores='4' threads='2'/> </cpu> No CPU pinning on either guest or host Benchmark example (Bare metal Win10 vs Fedora Guest Win10) <a href="http://www.3dmark.com/compare/fs/7076732/fs/7076627#" rel="noreferrer" target="_blank">http://www.3dmark.com/compare/fs/7076732/fs/7076627#</a> Could you try my settings and report back? <div class="HOEnZb"><div class="h5"> On Sat, Jan 9, 2016 at 3:14 PM, Quentin Deldycke <<a href="mailto:quentindeldycke@gmail.com">quentindeldycke@gmail.com</a>> wrote: > I use virsh: > > ===SNIP=== > <vcpu placement='static'>3</vcpu> > <cputune> > <vcpupin vcpu='0' cpuset='1'/> > <vcpupin vcpu='1' cpuset='2'/> > <vcpupin vcpu='2' cpuset='3'/> > <emulatorpin cpuset='6-7'/> > </cputune> > ===SNAP=== > > I have a prepare script running: > > ===SNIP=== > sudo mkdir /cpuset > sudo mount -t cpuset none /cpuset/ > cd /cpuset > echo 0 | sudo tee -a cpuset.cpu_exclusive > echo 0 | sudo tee -a cpuset.mem_exclusive > > sudo mkdir sys > echo 'Building shield for core system... threads 0 and 4, and we place all > runnning tasks there' > /bin/echo 0,4 | sudo tee -a sys/cpuset.cpus > /bin/echo 0 | sudo tee -a sys/cpuset.mems > /bin/echo 0 | sudo tee -a sys/cpuset.cpu_exclusive > /bin/echo 0 | sudo tee -a sys/cpuset.mem_exclusive > for T in `cat tasks`; do sudo bash -c "/bin/echo $T > sys/tasks">/dev/null > 2>&1 ; done > cd - > ===SNAP=== > > Note that i use this command line for the kernel > nohz_full=1,2,3,4,5,6,7 rcu_nocbs=1,2,3,4,5,6,7 default_hugepagesz=1G > hugepagesz=1G hugepages=12 > > > -- > Deldycke Quentin > > > On 9 January 2016 at 15:40, rndbit <<a href="mailto:rndbit@sysret.net">rndbit@sysret.net</a>> wrote: >> >> Mind posting actual commands how you achieved this? >> >> All im doing now is this: >> >> cset set -c 0-3 system >> cset proc -m -f root -t system -k >> >> <vcpu placement='static'>4</vcpu> >> <cputune> >> <vcpupin vcpu='0' cpuset='4'/> >> <vcpupin vcpu='1' cpuset='5'/> >> <vcpupin vcpu='2' cpuset='6'/> >> <vcpupin vcpu='3' cpuset='7'/> >> <emulatorpin cpuset='0-3'/> >> </cputune> >> >> Basically this puts most of threads to 0-3 cores including emulator >> threads. Some threads cant be moved though so they remain on 4-7 cores. VM >> is given 4-7 cores. It works better but there is still much to be desired. >> >> >> >> On 2016.01.09 15:59, Quentin Deldycke wrote: >> >> Hello, >> >> Using cpuset, i was using the vm with: >> >> Core 0: threads 0 & 4: linux + emulator pin >> Core 1,2,3: threads 1,2,3,5,6,7: windows >> >> I tested with: >> Core 0: threads 0 & 4: linux >> Core 1,2,3: threads 1,2,3: windows >> Core 1,2,3: threads 5,6,7: emulator >> >> The difference between both is huge (DPC latency is mush more stable): >> Performance on single core went up to 50% (cinebench ratio by core from >> 100 to 150 points) >> Performance on gpu went up to 20% (cinebench from 80fps to 100+) >> Performance on "heroes of the storm" went from 20~30 fps to stable 60 (and >> much time more than 100) >> >> (performance of Unigine Heaven went from 2700 points to 3100 points) >> >> The only sad thing is that i have the 3 idle threads which are barely >> used... Is there any way to put them back to windows? >> >> -- >> Deldycke Quentin >> >> >> On 29 December 2015 at 17:38, Michael Bauer <<a href="mailto:michael@m-bauer.org">michael@m-bauer.org</a>> wrote: >>> >>> I noticed that attaching a DVD-Drive from the host leads to HUGE delays. >>> I had attached my /dev/sr0 to the guest and even without a DVD in the drive >>> this was causing huge lag about once per second. >>> >>> Best regards >>> Michael >>> >>> >>> Am 28.12.2015 um 19:30 schrieb rndbit: >>> >>> 4000μs-16000μs here, its terrible. >>> Tried whats said on >>> <a href="https://lime-technology.com/forum/index.php?topic=43126.15" rel="noreferrer" target="_blank">https://lime-technology.com/forum/index.php?topic=43126.15</a> >>> Its a bit better with this: >>> >>> <vcpu placement='static'>4</vcpu> >>> <cputune> >>> <vcpupin vcpu='0' cpuset='4'/> >>> <vcpupin vcpu='1' cpuset='5'/> >>> <vcpupin vcpu='2' cpuset='6'/> >>> <vcpupin vcpu='3' cpuset='7'/> >>> <emulatorpin cpuset='0-3'/> >>> </cputune> >>> >>> I tried isolcpus but it did not yield visible benefits. ndis.sys is big >>> offender here but i dont really understand why. Removing network interface >>> from VM makes usbport.sys take over as biggest offender. All this happens >>> with performance governor of all cpu cores: >>> >>> echo performance | tee >>> /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor >/dev/null >>> >>> Cores remain clocked at 4k mhz. I dont know what else i could try. Does >>> anyone have any ideas..? >>> >>> On 2015.10.29 08:03, Eddie Yen wrote: >>> >>> I tested again with VM reboot, I found that this time is about >>> 1000~1500μs. >>> Also I found that it easily get high while hard drive is loading, but >>> only few times. >>> >>> Which specs you're using? Maybe it depends on CPU or patches. >>> >>> 2015-10-29 13:44 GMT+08:00 Blank Field <<a href="mailto:ihatethisfield@gmail.com">ihatethisfield@gmail.com</a>>: >>>> >>>> If i understand it right, this software has a fixed latency error of 1 >>>> ms(1000us) in windows 8-10 due to different kernel timer implementation. So >>>> i guess your latency is very good. >>>> >>>> On Oct 29, 2015 8:40 AM, "Eddie Yen" <<a href="mailto:missile0407@gmail.com">missile0407@gmail.com</a>> wrote: >>>>> >>>>> Thanks for information! And sorry I don'r read carefully at beginning >>>>> message. >>>>> >>>>> For my result, I got about 1000μs below and only few times got 1000μs >>>>> above when idling. >>>>> >>>>> I'm using 4820K and used 4 threads to VM, also I set these 4 threads >>>>> as 4 cores in VM settings. >>>>> The OS is Windows 10. >>>>> >>>>> 2015-10-29 13:21 GMT+08:00 Blank Field <<a href="mailto:ihatethisfield@gmail.com">ihatethisfield@gmail.com</a>>: >>>>>> >>>>>> I think they're using this: >>>>>> <a href="http://www.thesycon.de/deu/latency_check.shtml" rel="noreferrer" target="_blank">www.thesycon.de/deu/latency_check.shtml</a> >>>>>> >>>>>> On Oct 29, 2015 6:11 AM, "Eddie Yen" <<a href="mailto:missile0407@gmail.com">missile0407@gmail.com</a>> wrote: >>>>>>> >>>>>>> Sorry, but how to check DPC Latency? >>>>>>> >>>>>>> 2015-10-29 10:08 GMT+08:00 Nick Sukharev <<a href="mailto:nicksukharev@gmail.com">nicksukharev@gmail.com</a>>: >>>>>>>> >>>>>>>> I just checked on W7 and I get 3000μs-4000μs one one of the guests >>>>>>>> when 3 guests are running. >>>>>>>> >>>>>>>> On Wed, Oct 28, 2015 at 4:52 AM, Sergey Vlasov <<a href="mailto:sergey@vlasov.me">sergey@vlasov.me</a>> >>>>>>>> wrote: >>>>>>>>> >>>>>>>>> On 27 October 2015 at 18:38, LordZiru <<a href="mailto:lordziru@gmail.com">lordziru@gmail.com</a>> wrote: >>>>>>>>>> >>>>>>>>>> I have brutal DPC Latency on qemu, no matter if using pci-assign >>>>>>>>>> or vfio-pci or without any passthrought, >>>>>>>>>> >>>>>>>>>> my DPC Latency is like: >>>>>>>>>> 10000,500,8000,6000,800,300,12000,9000,700,2000,9000 >>>>>>>>>> and on native windows 7 is like: >>>>>>>>>> 20,30,20,50,20,30,20,20,30 >>>>>>>>> >>>>>>>>> >>>>>>>>> In Windows 10 guest I constantly have red bars around 3000μs >>>>>>>>> (microseconds), spiking sometimes up to 10000μs. >>>>>>>>> >>>>>>>>>> >>>>>>>>>> I don't know how to fix it. >>>>>>>>>> this matter for me because i are using USB Sound Card for my VMs, >>>>>>>>>> and i get sound drop-outs every 0-4 secounds >>>>>>>>>> >>>>>>>>> >>>>>>>>> That bugs me a lot too. I also use an external USB card and my DAW >>>>>>>>> periodically drops out :( >>>>>>>>> >>>>>>>>> I haven't tried CPU pinning yet though. And perhaps I should try >>>>>>>>> Windows 7. >>>>>>>>> >>>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> vfio-users mailing list >>>>>>>>> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >>>>>>>>> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> _______________________________________________ >>>>>>>> vfio-users mailing list >>>>>>>> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >>>>>>>> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> _______________________________________________ >>>>>>> vfio-users mailing list >>>>>>> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >>>>>>> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >>>>>>> >>>>> >>> >>> >>> >>> _______________________________________________ >>> vfio-users mailing list >>> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >>> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >>> >>> >>> >>> >>> _______________________________________________ >>> vfio-users mailing list >>> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >>> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >>> >>> >>> >>> _______________________________________________ >>> vfio-users mailing list >>> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >>> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >>> >> >> >> >> _______________________________________________ >> vfio-users mailing list >> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >> >> >> >> _______________________________________________ >> vfio-users mailing list >> <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> >> <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> >> > > > _______________________________________________ > vfio-users mailing list > <a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a> > <a href="https://www.redhat.com/mailman/listinfo/vfio-users" rel="noreferrer" target="_blank">https://www.redhat.com/mailman/listinfo/vfio-users</a> > </div></div></blockquote></div> </div>