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From: John Baldwin <jhb@freebsd.org>
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 lev@freebsd.org
Date: Mon, 27 Aug 2012 12:26:03 -0400
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	(bigwig.baldwin.cx); Mon, 27 Aug 2012 14:40:37 -0400 (EDT)
Cc: 
Subject: Re: What is "Fast task queue"? (Was: How to understand what `swi5'
	kernel thread does?)
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On Monday, August 27, 2012 8:46:46 am Lev Serebryakov wrote:
> Hello, Lev.
> You wrote 27 =D0=B0=D0=B2=D0=B3=D1=83=D1=81=D1=82=D0=B0 2012 =D0=B3., 6:1=
9:57:
>=20
>  I've found (with help of debug printing added to kernel), that "swi5"
> has only one handler "Fast task queue" (name is too long to be seen in
> `top' output, may be, rename it to "fast tqueue"?)
>=20
>  What "fast tasks" are performed via this queue? Under network load it
> is main consumer of CPU.

Certain NIC drivers perform much of their interrupt handling in that thread.

=2D-=20
John Baldwin