Date: Fri, 24 Sep 2004 23:27:56 -0400 From: Mike Tancsa <mike@sentex.net> To: TM4525@aol.com Cc: freebsd-questions@freebsd.org Subject: Re: Device polling performance Message-ID: <b6p9l0lgap8pq96fks7co3mk41fb3jjmdt@4ax.com> In-Reply-To: <68.44866630.2e859ba8@aol.com> References: <68.44866630.2e859ba8@aol.com>
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On Fri, 24 Sep 2004 11:47:52 EDT, in sentex.lists.freebsd.questions you wrote: >I thought I'd reword my question since no one seemed to understand the = first=20 >time. > >Is there a way to measure CPU kernel/interrupt usage when device polling= is=20 >enabled on 4.x systems? top and systat both show 100% idle all of the = time. > Hi, As long as all your interfaces support polling, you should see hardly see any interrupt usage at all, as that is the whole point of polling. You can allocate more or less CPU cycles to flinging packets around via various sysctl settings. See the polling man pages for more info ---Mike
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