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Date:      Mon, 11 Nov 2002 14:43:11 +0900
From:      Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To:        Poul-Henning Kamp <phk@critter.freebsd.dk>
Cc:        Hidetoshi Shimokawa <simokawa@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, takashi@yha.att.ne.jp
Subject:   Re: cvs commit: src/sys/dev/nge if_nge.c if_ngereg.h 
Message-ID:  <ybsd6pchdao.wl@ett.sat.t.u-tokyo.ac.jp>
In-Reply-To: <28575.1036954435@critter.freebsd.dk>
References:  <ybsk7jlhavm.wl@ett.sat.t.u-tokyo.ac.jp> <28575.1036954435@critter.freebsd.dk>

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At Sun, 10 Nov 2002 19:53:55 +0100,
Poul-Henning Kamp wrote:
> 
> In message <ybsk7jlhavm.wl@ett.sat.t.u-tokyo.ac.jp>, Hidetoshi Shimokawa writes
> :
> >Do you have any good reason to believe that device polling doesn't
> >help in most cases?
> 
> It hurts in low-trafic scenarios.

I understand this is a reason why device polling is not enabled by
default.

> Well, hopefully we can find a non-hack solution to this when our stack
> turns more SMP like.

Could you elaborate on this? Any document about SMP like stack and
NIC performance? Is it still useful for UP system?

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html


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