From: Jamie Lokier <lk@tantalophile.demon.co.uk>
To: Gabriel Paubert <paubert@iram.es>
Cc: Hirokazu Takahashi <taka@valinux.co.jp>,
hpa@zytor.com, linux-kernel@vger.kernel.org
Subject: Re: TCP Segmentation Offloading (TSO)
Date: Thu, 5 Sep 2002 12:17:17 +0100 [thread overview]
Message-ID: <20020905121717.A15540@kushida.apsleyroad.org> (raw)
In-Reply-To: <Pine.LNX.4.33.0209051219000.21098-100000@gra-lx1.iram.es>; from paubert@iram.es on Thu, Sep 05, 2002 at 12:28:23PM +0200
Gabriel Paubert wrote:
> Now that is grossly inefficient ;-) since you can save one instruction by
> moving roll after adcl (hand edited partial patch hunk, won't apply):
Yes but is it _faster_? :-)
I've been doing some PPro assembly lately, and I'm reminded that
sometimes inserting instructions can reduce the timing by up to 8 cycles
or so.
-- Jamie
next prev parent reply other threads:[~2002-09-05 11:14 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-02 17:45 Feldman, Scott
2002-09-02 18:58 ` kuznet
2002-09-03 7:42 ` Hirokazu Takahashi
2002-09-03 7:51 ` David S. Miller
2002-09-03 11:27 ` Paul Mackerras
2002-09-03 11:29 ` David S. Miller
2002-09-03 12:21 ` kuznet
2002-09-03 13:03 ` Hirokazu Takahashi
2002-09-03 13:19 ` Hirokazu Takahashi
2002-09-03 13:22 ` kuznet
2002-09-03 21:05 ` David S. Miller
2002-09-03 21:20 ` David S. Miller
2002-09-04 1:02 ` H. Peter Anvin
2002-09-04 1:54 ` David S. Miller
2002-09-04 22:39 ` Gabriel Paubert
2002-09-04 22:41 ` H. Peter Anvin
2002-09-05 2:13 ` Hirokazu Takahashi
2002-09-05 2:21 ` David S. Miller
2002-09-05 10:28 ` Gabriel Paubert
2002-09-05 11:17 ` Jamie Lokier [this message]
2002-09-05 13:21 ` Gabriel Paubert
2002-09-05 13:17 ` David S. Miller
2002-09-08 4:20 ` Hirokazu Takahashi
2002-09-08 4:29 ` H. Peter Anvin
2002-09-04 23:17 ` Alan Cox
2002-09-05 0:09 ` Jamie Lokier
2002-09-02 19:06 ` Jeff Garzik
2002-09-02 23:13 ` David S. Miller
2002-09-03 4:58 ` Jordi Ros
2002-09-03 6:52 ` David S. Miller
2002-09-03 7:26 ` Jordi Ros
2002-09-03 7:39 ` David S. Miller
[not found] <288F9BF66CD9D5118DF400508B68C4460283E564@orsmsx113.jf.intel.com.suse.lists.linux.kernel>
[not found] ` <200209021858.WAA00388@sex.inr.ac.ru.suse.lists.linux.kernel>
[not found] ` <20020903.164243.21934772.taka@valinux.co.jp.suse.lists.linux.kernel>
[not found] ` <20020903.005119.50342945.davem@redhat.com.suse.lists.linux.kernel>
2002-09-03 9:05 ` Andi Kleen
2002-09-03 10:00 ` David S. Miller
2002-09-03 10:10 ` Andi Kleen
2002-09-03 10:09 ` David S. Miller
2002-09-03 17:50 Feldman, Scott
2002-09-03 18:09 Manfred Spraul
2002-09-03 23:08 ` Hirokazu Takahashi
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