- RHEL 7.2 and higher.
- RHEL 8
- kernel-3.10.0-327.el7.x86_64 and higher.
- How to verify list of "isolated" and "nohz_full" CPU information from sysfs?
- From RHEL 7.2 onwards (kernel-3.10.0-327.el7.x86_64 and higher), the
nohz_fullCPU information can be verified from sysfs. The information is exported under following files.
- Verification of CPU isolation from sysfs.
# cat /proc/cmdline BOOT_IMAGE=/vmlinuz-3.10.0-320.el7.x86_64 root=/dev/mapper/rhel-root ro crashkernel=auto rd.lvm.lv=rhel/root rd.lvm.lv=rhel/swap console=ttyS1,115200n81 isolcpus=1,5-8 nohz_full=2,7-10 # cat /sys/devices/system/cpu/isolated 1,5-8 # cat /sys/devices/system/cpu/nohz_full 2,7-10
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