Messages in this thread | | | Date | Fri, 30 Jul 1999 13:37:13 +0900 | From | NIIBE Yutaka <> | Subject | sched_yield() on "SCHED_FIFO" |
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Suzaki-san,
Kuniyasu SUZAKI writes: > The process is executed by super user. I was thinking this process > could measure the time for context switch on the real time class > "SCHED_FIFO" and it was measured on kernel 2.0.36 and Solaris. But on > 2.2.5-15 the parent process didn't yield.
Result of my environment (two CPU PII 266MHz x2).
# ./context Context swicth time 6 us from 11792 to 11793 Context swicth time 13 us from 11793 to 11792 Context swicth time 4 us from 11792 to 11792 Context swicth time 10 us from 11792 to 11792 Context swicth time 3 us from 11792 to 11793 Context swicth time 4 us from 11793 to 11792 Context swicth time 5 us from 11792 to 11793 Context swicth time 3 us from 11793 to 11792 Context swicth time 5 us from 11792 to 11793 # cat /proc/version Linux version 2.2.10 (root@qwe) (gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)) #1 SMP Sat Jul 24 17:41:19 JST 1999 #
Sometimes it switch to other, sometimes not. -- Niibe Yutaka
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