15. 対策 - vmstat_update()
•
linux/Documentation/kernel-per-CPUkthreads.txt によると、
It is not possible to entirely get rid of OS jitter from
vmstat_update() on CONFIG_SMP=y systems, but you
can decrease its frequency by writing a large value to
/proc/sys/vm/stat_interval.
•
実はdynticks-testingでは既に頻度を下げている
sysctl vm.stat_interval=120