Date: Tue, 23 Aug 2005 11:49:56 +0800 From: "Mao Shou Yan" <david.mao@thomson.net> To: <freebsd-net@freebsd.org>, <freebsd-stable@freebsd.org> Subject: polling in 4.11 vs 5.4 Message-ID: <31021C278A7A6B4AB95E9A085C3552180FF7C5@bjngsmail01>
next in thread | raw e-mail | index | archive | help
Hi, everybody,
=20
I hope this is the right place that I post to!
=20
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.
BTW, I found that context switch in 5.4 is much higher than 5.4 while
enabling polling. (Using systat -vmstat 1)
I'm looking forward your reply.
Any response is welcome!
=20
=20
=20
David.Mao
=20
=20
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?31021C278A7A6B4AB95E9A085C3552180FF7C5>