vmx_perf_tweaks.md
source link: https://gist.github.com/cocafe/d3b4e286af68925d45fcb2c7337cf673
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.
VMware VMX Notes, Performance Tweaks, Interactivity Improvements
experimented on VMware Workstation 15.5.2 build-15785246
, other verisons may not work, no guaranteed.
global config for all VMs
C:\ProgramData\VMware\VMware Workstation\config.ini
resume/suspend VM asap
if you have mere host RAM amount, do not use prefvmx.minVmMemPct=100
# add to global config to apply to all VMs
prefvmx.minVmMemPct = "100"
mainMem.useNamedFile = "FALSE"
mainMem.partialLazySave = "FALSE"
mainMem.partialLazyRestore = "FALSE"
spoof guest OS that it's inside real machine
these tweaks will break VM tools ability to communicate with host, but it can actually fix weird random freezes since Workstation 12+, confirmed.
monitor_control.virtual_rdtsc = "false"
monitor_control.restrict_backdoor = "true"
isolation.tools.getPtrLocation.disable = "true"
isolation.tools.setPtrLocation.disable = "true"
isolation.tools.setVersion.disable = "true"
isolation.tools.getVersion.disable = "true"
monitor_control.disable_directexec = "true"
update:
random freezes:
if a picture or video is in Windows clip-paste buffer, then vmware is likely to freeze.
somebody reported this in vmware community already, but it looks like no fix right now (vmware 16).
just closed vmware window forcely and Ctrl+C some plain texts, then open vmware again. this will fix that freeze.
configs above accidentally fix this freeze by disabling vmware tool (clip-paste sharing) in guest OS.
spoof guest OS - more
monitor_control.disable_directexec = "true"
monitor_control.disable_chksimd = "true"
monitor_control.disable_ntreloc = "true"
monitor_control.disable_selfmod = "true"
monitor_control.disable_reloc = "true"
monitor_control.disable_btinout = "true"
monitor_control.disable_btmemspace = "true"
monitor_control.disable_btpriv = "true"
monitor_control.disable_btseg = "true"
spoof macOS guest
board-id.reflectHost = "FALSE"
board-id = "Mac-BE088AF8C5EB4FA2"
hw.model.reflectHost = "FALSE"
hw.model = "iMac18,3"
serialNumber.reflectHost = "FALSE"
serialNumber = "C02TC4YKJ1GJ"
smbios.reflectHost = "FALSE"
efi.nvram.var.ROM.reflectHost = "FALSE"
efi.nvram.var.MLB.reflectHost = "FALSE"
efi.nvram.var.ROM = "3c0754a2f9be"
improve interactivity (greatly)
confirmed on hosts with GTX1070
and RX580
, win7
and ubuntu 18.04
guests.
interactive response latency is reduced greatly, no more choppy guest screen.
these tweaks probably add some overheads to host machine.
use with caution if host machine has poor performance (not tested yet).
mks.lowCompositingFPS="60"
mks.maxCompositingFPS="1000"
mks.skipHookTimeoutCheck="TRUE"
mks.updateCoalescePeriodUS="0"
svga.readbackRegionComplexityLimit="512"
mks.requireHardwareRenderer="TRUE"
mks.lowCompositingFPS="60"
: default:10
, lower limit?mks.maxCompositingFPS="1000"
: default:100
mks.skipHookTimeoutCheck="TRUE"
: default:FALSE
mks.updateCoalescePeriodUS="0"
: default:16666
" (16.666ms, 60Hz),0
: latency reduces greatlysvga.threadPollUS="1000"
: default:10000
,1000
to reduce latency, may be laggy due to overheadmks.vdpMinFrameDelayMS=
"0": default:28
svga.noThreadSleep="TRUE"
: default:FALSE
,TRUE
can hog one logical host CPU 100%, use with cautionsvga.readbackRegionComplexityLimit="512"
: default: "64",512
improves FPS of program inside VM
other tweaks that may affect interactivity
mks.vsync="1"
: default:1
,0
feels choppy, because vsync is offmks.allowAcceleratedRenderers="TRUE"
: default: "default", may allow to switch backend hw-acc renderermks.win32.timerResolution="500"
: default:0
mks.dx11.enableModernPresentation="TRUE"
: default:FALSE
,TRUE
feels laggy
placebo thing
this tweak can be found while googling improve vmware interactive things, but it is deprecated in modern Workstation
# default: 4, 100/4=25hz, maximum: 1
svga.maxChangeTick = "1"
tweaks that did not confirmed
svga.maxFullscreenRefreshTick= # default: "-1" ???
svga.threadPollPendingFencesUS= # default: "100"
svga.maxFenceAgeUS= # default: "100000"
svga.traceFBCoaleseUS= # default: "10000"
mks.dx11.waitForQueryYieldMS= #default: "1"
mks.forceDiscreteGPU= #default: "FALSE"
Recommend
About Joyk
Aggregate valuable and interesting links.
Joyk means Joy of geeK