Date: Sun, 18 Jul 2010 01:14:41 -0700 (PDT) From: Doug Barton <dougb@FreeBSD.org> To: Kostik Belousov <kostikbel@gmail.com> Cc: freebsd-current@freebsd.org, Rui Paulo <rpaulo@freebsd.org> Subject: Re: Why is intr taking up so much cpu? Message-ID: <alpine.BSF.2.00.1007180113370.1707@qbhto.arg> In-Reply-To: <20100717192128.GM2381@deviant.kiev.zoral.com.ua> References: <alpine.BSF.2.00.1007170013191.7378@qbhto.arg> <A81B337F-5932-44B1-BDB4-D9DD36332A16@lavabit.com> <alpine.BSF.2.00.1007171103060.1546@qbhto.arg> <F653FF83-D9CF-42A2-AE9A-B8F914090065@FreeBSD.org> <alpine.BSF.2.00.1007171208010.1538@qbhto.arg> <20100717192128.GM2381@deviant.kiev.zoral.com.ua>
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On Sat, 17 Jul 2010, Kostik Belousov wrote:
> Run top in the mode where all system threads are shown separately
> (e.g. top -HS seems to do it), then watch what thread eats the processor.
And the winner is!
11 root -32 - 0K 168K WAIT 0 0:28 18.02% {swi4: clock}
11 root 21 -64 - 0K 168K WAIT 0 1:17 18.90% intr
The first is with -H, the second without.
Doug
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