polling in 4.11 vs 5.4

[Mao Shou Yan]

BTW, I found that context switch in 5.4 is much higher than 5.4 while =
enabling polling. (Using systat -vmstat 1)


-----Original Message-----
From: owner-freebsd-performance at freebsd.org =
[mailto:owner-freebsd-performance at freebsd.org] On Behalf Of Mao Shou Yan
Sent: 2005=C4=EA8=D4=C223=C8=D5 10:07
To: freebsd-performance at freebsd.org
Subject: polling in 4.11 vs 5.4

Hi, everybody,

         I hope this is the right place that I post to!

         When I enabled polling in 5.4 and 4.11, I found that CPU load
in 5.4 is much higher than 4.11. For example, suppose HZ is 5000, in 5.4
the idle CPU is about 87%, but in 4.11, the idle CPU is about 99.9%. Is
this right? Or the statistic is wrong in 4.11?

         BTW, ACPI is disabled under 5.4.

         I'm looking forward your reply.

         Any response is welcome!

=20

David.Mao

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