cmdline problem on Ubuntu SOS
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siming
hi, I builded the V2.0 with ubuntu on board NUC7i5BNH. It works fine, but there is something wrong in cmdline. $ cat /proc/cmdline root=/dev/sda3 console=ttyS0 rw rootwait console=tty0 consoleblank=0 no_timer_check quiet loglevel=3 i915.nuclear_pageflip=1 hvlog=2M@0xe00000 memmap=0x200000$0xe00000 root=PARTUUID=3c7099ff-83a5-49e4-999e-9dd9c322e1a5 clocksource=tsc tsc=reliable nmi_watchdog=0 nosoftlockup idle=poll noht audit=0 irqaffinity=0 isolcpus=1-3 rcu_nocbs=1-3 nohz_full=1-3 intel_pstate=disable intel.max_cstate=0 intel_idle.max_cstate=0 processor.max_cstate=0 processor_idle.max_cstate=0 hugepagesz=1G hugepages=12 1.Where is the sda3 parameter comes from? I just have one NVMe disk. 2.Why the isolcpus did not work on SOS? I set the boot paramenter in /etc/grub.d/40-custom, but the cpus are not isolated according to the file /proc/interrupts. I just want to optimize the SOS system parameters to run a xenomai UOS. Thanks. siming |
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Liu, Fuzhong
Hi Siming Following kernel cmdline is the default values of acrn.bin: root=/dev/sda3 console=ttyS0 rw rootwait console=tty0 consoleblank=0 no_timer_check quiet loglevel=3 i915.nuclear_pageflip=1 hvlog=2M@0xe00000 memmap=0x200000$0xe00000
The parameters after multiboot 2 are appended to default ones and the parameters after module2 overwrite the default ones. Please check this link for detail:https://projectacrn.github.io/latest/tutorials/using_grub.html
My understanding is you should tune xenomai kernel cmdline for xenomai UOS performance. Not sos kernel cmdline.
BR. Fuzhong From: acrn-users@... <acrn-users@...>
On Behalf Of siming
Sent: Saturday, August 22, 2020 1:33 PM To: acrn-users@... Subject: [acrn-users] cmdline problem on Ubuntu SOS
hi, I builded the V2.0 with ubuntu on board NUC7i5BNH. It works fine, but there is something wrong in cmdline. $ cat /proc/cmdline root=/dev/sda3 console=ttyS0 rw rootwait console=tty0 consoleblank=0 no_timer_check quiet loglevel=3 i915.nuclear_pageflip=1 hvlog=2M@0xe00000 memmap=0x200000$0xe00000 root=PARTUUID=3c7099ff-83a5-49e4-999e-9dd9c322e1a5 clocksource=tsc tsc=reliable nmi_watchdog=0 nosoftlockup idle=poll noht audit=0 irqaffinity=0 isolcpus=1-3 rcu_nocbs=1-3 nohz_full=1-3 intel_pstate=disable intel.max_cstate=0 intel_idle.max_cstate=0 processor.max_cstate=0 processor_idle.max_cstate=0 hugepagesz=1G hugepages=12
1.Where is the sda3 parameter comes from? I just have one NVMe disk. 2.Why the isolcpus did not work on SOS? I set the boot paramenter in /etc/grub.d/40-custom, but the cpus are not isolated according to the file /proc/interrupts. I just want to optimize the SOS system parameters to run a xenomai UOS.
Thanks. siming |
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