That is better than mine as well, I get arund 100uS and there is not a great deal of diffrence between isolcpus=1,2,3 or isolcpus=2,3. There does appear to be slightly better graphic performanc with isolcpus=2,3
cmdline.txt is:
Code:
console=serial0,115200 console=tty1 root=PARTUUID=738a4d67-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait lapic noxsave acpi_osi= isolcpus=2,3 idle=poll acpi_irq_nobalance noirqbalance vmalloc=32MB clocksource=acpi_pm net.ifnames=0
config.txt has:
Code:
[pi4]
# Enable DRM VC4 V3D driver on top of the dispmanx display stack
dtoverlay=vc4-fkms-v3d
max_framebuffers=2
kernel=kernel7l-rt.img
force_turbo=1
dtoverlay=disable-bt
I am running headless over wifi, I wonder if that makes a difference.
