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#1 2022-06-16 04:13:07
- JoshKrahn
- Member
- Registered: 2022-06-16
- Posts: 1
Random low fps in games in vm.
Ive been using kvm to game (apex legends) in windows for a while and i get random lag spikes where my fps goes from 165(capped) to like 30-40. The spikes used to be a quick 1 second freeze every once in a while now it doesnt freeze but my fps drops for about a min maybe shorter than goes back up. Im pretty sure this is due to interrupts but im not sure how to find out why and fix it. I ran
cat /proc/interrupts Output:
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 CPU8 CPU9 CPU10 CPU11
0: 16 0 0 0 0 0 0 0 0 0 0 0 IR-IO-APIC 2-edge timer
8: 0 0 0 0 0 0 0 0 0 1 0 0 IR-IO-APIC 8-edge rtc0
9: 0 0 0 0 0 0 0 0 0 0 0 0 IR-IO-APIC 9-fasteoi acpi
14: 0 0 0 0 0 0 0 0 0 0 0 0 IR-IO-APIC 14-fasteoi INT3451:00
16: 0 0 25 0 0 0 0 0 0 0 0 0 IR-IO-APIC 16-fasteoi i801_smbus
17: 0 0 0 0 0 0 0 682818 0 0 0 0 IR-IO-APIC 17-fasteoi snd_hda_intel:card2, vfio-intx(0000:01:00.1)
120: 0 0 0 0 0 0 0 0 0 0 0 0 DMAR-MSI 0-edge dmar0
121: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 16384-edge PCIe PME
122: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 442368-edge PCIe PME, pciehp
123: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 458752-edge PCIe PME, aerdrv
124: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 466944-edge PCIe PME, aerdrv
125: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 475136-edge PCIe PME, aerdrv
126: 0 0 0 0 0 0 0 0 8239 0 0 0 IR-PCI-MSI 376832-edge ahci[0000:00:17.0]
127: 0 0 0 0 0 0 0 0 0 0 7280218 0 IR-PCI-MSI 327680-edge xhci_hcd
128: 0 0 0 0 0 0 0 0 0 0 0 28 IR-PCI-MSI 2621440-edge nvme0q0
129: 20387 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 2621441-edge nvme0q1
130: 0 18631 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 2621442-edge nvme0q2
131: 0 0 19721 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 2621443-edge nvme0q3
132: 0 0 0 25835 0 0 0 0 0 0 0 0 IR-PCI-MSI 2621444-edge nvme0q4
133: 0 0 0 0 26252 0 0 0 0 0 0 0 IR-PCI-MSI 2621445-edge nvme0q5
134: 0 0 0 0 0 26698 0 0 0 0 0 0 IR-PCI-MSI 2621446-edge nvme0q6
135: 0 0 0 0 0 0 23858 0 0 0 0 0 IR-PCI-MSI 2621447-edge nvme0q7
136: 0 0 0 0 0 0 0 25857 0 0 0 0 IR-PCI-MSI 2621448-edge nvme0q8
137: 0 0 0 0 0 0 0 0 24585 0 0 0 IR-PCI-MSI 2621449-edge nvme0q9
138: 0 0 0 0 0 0 0 0 0 36317 0 0 IR-PCI-MSI 2621450-edge nvme0q10
139: 0 0 0 0 0 0 0 0 0 0 29369 0 IR-PCI-MSI 2621451-edge nvme0q11
140: 0 0 0 0 0 0 0 0 0 0 0 29641 IR-PCI-MSI 2621452-edge nvme0q12
141: 0 51 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 360448-edge mei_me
142: 0 0 0 541159 0 0 0 0 0 0 0 0 IR-PCI-MSI 520192-edge eno1
143: 0 0 0 0 626 0 0 0 0 0 0 0 IR-PCI-MSI 514048-edge snd_hda_intel:card1
144: 0 0 0 0 0 1727 0 0 0 0 0 0 IR-PCI-MSI 1572864-edge iwlwifi:default_queue
145: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572865-edge iwlwifi:queue_1
146: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572866-edge iwlwifi:queue_2
147: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572867-edge iwlwifi:queue_3
148: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572868-edge iwlwifi:queue_4
149: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572869-edge iwlwifi:queue_5
150: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572870-edge iwlwifi:queue_6
151: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572871-edge iwlwifi:queue_7
152: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572872-edge iwlwifi:queue_8
153: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572873-edge iwlwifi:queue_9
154: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572874-edge iwlwifi:queue_10
155: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572875-edge iwlwifi:queue_11
156: 0 0 0 0 0 0 0 0 0 0 0 0 IR-PCI-MSI 1572876-edge iwlwifi:queue_12
157: 0 0 0 0 0 0 5 0 0 0 0 0 IR-PCI-MSI 1572877-edge iwlwifi:exception
158: 0 0 0 0 0 0 0 0 1127659 0 0 0 IR-PCI-MSI 2097152-edge nvidia
159: 0 0 0 0 0 0 0 0 0 10169287 0 0 IR-PCI-MSI 524288-edge vfio-msi[0](0000:01:00.0)
NMI: 748 747 748 278 281 281 294 282 260 215 274 278 Non-maskable interrupts
LOC: 12345123 12622957 12656376 6418747 6123914 5866436 5598550 4959343 5609312 8576668 6652239 6293767 Local timer interrupts
SPU: 0 0 0 0 0 0 0 0 0 0 0 0 Spurious interrupts
PMI: 748 747 748 278 281 281 294 282 260 215 274 278 Performance monitoring interrupts
IWI: 0 0 1 0 0 1 0 0 0 0 2 0 IRQ work interrupts
RTR: 0 0 0 0 0 0 0 0 0 0 0 0 APIC ICR read retries
RES: 860530 971493 877940 21701412 22094389 22123348 21107720 20988306 19531763 18635020 21739356 21865858 Rescheduling interrupts
CAL: 185079 163635 210099 95829183 112409879 120855506 125742656 140266568 133071094 123183826 120020930 103089560 Function call interrupts
TLB: 115835 114538 167867 86188058 105011222 114018642 118723031 133011839 126347756 117153107 113933407 97654459 TLB shootdowns
TRM: 0 0 0 0 0 0 0 0 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 0 0 0 0 0 0 0 0 Threshold APIC interrupts
DFR: 0 0 0 0 0 0 0 0 0 0 0 0 Deferred Error APIC interrupts
MCE: 0 0 0 0 0 0 0 0 0 0 0 0 Machine check exceptions
MCP: 22 23 23 23 23 23 23 23 23 23 23 23 Machine check polls
ERR: 0
MIS: 0
PIN: 1479 1393 1424 733337 824591 847848 919085 920026 788878 624740 813537 810741 Posted-interrupt notification event
NPI: 0 0 0 0 0 0 0 0 0 0 0 0 Nested posted-interrupt event
PIW: 0 0 0 0 0 0 0 0 0 0 0 0 Posted-interrupt wakeup eventI was running windows 1902 i think and i had the updates paused and of course the temporary pause ran out before i fully disabled win update. I did check /proc/interrupts before it updated. This was because of the random short freezes. i got pretty much the same output. This is normal(reg fps, apex running) output on ksystemguard click the image for a bigger version
I have a Intel Core i5 10600kf 16gb ram and a 3060(guest) and 960(host). Im passing though 8 threads to vm and 4 im keeping for the host. i gave my vm 12 gb of ram. My current xml is the following.
<domain type="kvm">
<name>WindowsVM6</name>
<uuid>1672427e-e74a-aa1e-891a-e480418aae41</uuid>
<metadata>
<libosinfo:libosinfo xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
<libosinfo:os id="http://microsoft.com/win/10"/>
</libosinfo:libosinfo>
</metadata>
<memory unit="KiB">9437184</memory>
<currentMemory unit="KiB">9437184</currentMemory>
<vcpu placement="static">8</vcpu>
<os>
<type arch="x86_64" machine="pc-q35-6.2">hvm</type>
<loader readonly="yes" secure="yes" type="pflash">/usr/share/edk2-ovmf/x64/OVMF_CODE.secboot.fd</loader>
<nvram>/var/lib/libvirt/qemu/nvram/WindowsVM_VARS.fd</nvram>
<boot dev="hd"/>
<bootmenu enable="yes"/>
</os>
<features>
<acpi/>
<apic/>
<hyperv mode="custom">
<relaxed state="on"/>
<vapic state="on"/>
<spinlocks state="on" retries="8191"/>
</hyperv>
<vmport state="off"/>
<smm state="on"/>
</features>
<cpu mode="host-passthrough" check="none" migratable="on">
<topology sockets="1" dies="1" cores="8" threads="1"/>
</cpu>
<clock offset="localtime">
<timer name="rtc" tickpolicy="catchup"/>
<timer name="pit" tickpolicy="delay"/>
<timer name="hpet" present="no"/>
<timer name="hypervclock" present="yes"/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled="no"/>
<suspend-to-disk enabled="no"/>
</pm>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type="file" device="disk">
<driver name="qemu" type="raw"/>
<source file="/var/lib/libvirt/images/vol.img"/>
<target dev="vda" bus="virtio"/>
<address type="pci" domain="0x0000" bus="0x08" slot="0x00" function="0x0"/>
</disk>
<disk type="file" device="disk">
<driver name="qemu" type="raw"/>
<source file="/home/rick/Drives/VMDisk/dataDrive.img"/>
<backingStore/>
<target dev="sdc" bus="sata"/>
<serial>msdoifn398hs9dihnf983</serial>
<address type="drive" controller="0" bus="0" target="0" unit="2"/>
</disk>
<controller type="usb" index="0" model="qemu-xhci" ports="15">
<address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
</controller>
<controller type="sata" index="0">
<address type="pci" domain="0x0000" bus="0x00" slot="0x1f" function="0x2"/>
</controller>
<controller type="pci" index="0" model="pcie-root"/>
<controller type="pci" index="1" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="1" port="0x10"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0" multifunction="on"/>
</controller>
<controller type="pci" index="2" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="2" port="0x11"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x1"/>
</controller>
<controller type="pci" index="3" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="3" port="0x12"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x2"/>
</controller>
<controller type="pci" index="4" model="pcie-to-pci-bridge">
<model name="pcie-pci-bridge"/>
<address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</controller>
<controller type="pci" index="5" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="5" port="0x13"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x3"/>
</controller>
<controller type="pci" index="6" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="6" port="0x14"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x4"/>
</controller>
<controller type="pci" index="7" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="7" port="0x15"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x5"/>
</controller>
<controller type="pci" index="8" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="8" port="0x16"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x6"/>
</controller>
<controller type="pci" index="9" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="9" port="0x17"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x7"/>
</controller>
<controller type="scsi" index="0" model="lsilogic">
<address type="pci" domain="0x0000" bus="0x04" slot="0x01" function="0x0"/>
</controller>
<controller type="virtio-serial" index="0">
<address type="pci" domain="0x0000" bus="0x05" slot="0x00" function="0x0"/>
</controller>
<interface type="network">
<mac address="52:54:12:e9:1a:93"/>
<source network="default"/>
<model type="e1000e"/>
<link state="up"/>
<address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/>
</interface>
<channel type="spicevmc">
<target type="virtio" name="com.redhat.spice.0"/>
<address type="virtio-serial" controller="0" bus="0" port="1"/>
</channel>
<input type="mouse" bus="ps2"/>
<input type="keyboard" bus="ps2"/>
<input type="evdev">
<source dev="/dev/input/by-id/usb-Razer_Razer_Cynosa_Chroma-event-kbd" grab="all" repeat="on"/>
</input>
<graphics type="spice" autoport="yes">
<listen type="address"/>
<image compression="off"/>
</graphics>
<sound model="ich9">
<codec type="micro"/>
<audio id="1"/>
<address type="pci" domain="0x0000" bus="0x04" slot="0x02" function="0x0"/>
</sound>
<audio id="1" type="pulseaudio" serverName="/run/user/1000/pulse/native"/>
<video>
<model type="none"/>
</video>
<hostdev mode="subsystem" type="pci" managed="yes">
<source>
<address domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</source>
<address type="pci" domain="0x0000" bus="0x06" slot="0x00" function="0x0"/>
</hostdev>
<hostdev mode="subsystem" type="pci" managed="yes">
<source>
<address domain="0x0000" bus="0x01" slot="0x00" function="0x1"/>
</source>
<address type="pci" domain="0x0000" bus="0x07" slot="0x00" function="0x0"/>
</hostdev>
<hostdev mode="subsystem" type="usb" managed="yes">
<source>
<vendor id="0x046d"/>
<product id="0xc08b"/>
</source>
<address type="usb" bus="0" port="1"/>
</hostdev>
<redirdev bus="usb" type="spicevmc">
<address type="usb" bus="0" port="2"/>
</redirdev>
<redirdev bus="usb" type="spicevmc">
<address type="usb" bus="0" port="3"/>
</redirdev>
<memballoon model="none"/>
</devices>
</domain>Ive been playing for an hour to try and get a screen shot of the high interrupts but of course now that i want it to happen its not. usually happens once or twice a game. Finally got the screenshot.
Last edited by JoshKrahn (2022-06-16 04:58:28)
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