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Date: Wed, 4 May 2011 17:26:36 +0400
From: Lev Serebryakov <lev@FreeBSD.org>
Organization: FreeBSD
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To: Lev Serebryakov <lev@FreeBSD.org>
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Cc: freebsd-stable@freebsd.org
Subject: Re: How to understand, what userland program does in kernel?
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Hello, Lev.
You wrote 4 =EC=E0=FF 2011 =E3., 16:49:01:

>   I have userland program (transmission BT client), which spent 100%
> of one core of E4500 CPU when it has many peers. It is surprises me,
> as channel is only 35Mbit, and my "Linux" friends can upload much more
> on comparable hardware.
>   But what surprises me even more, that 50% of this time it spends as
> System time.
  When it spents, says, 75% of one core, SYSTEM is only 1-2%, not
 75%/2 =3D~ 37%, what is interesting...

--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>