Date: Sat, 25 Nov 2006 05:22:16 -0600 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: Divacky Roman <xdivac02@stud.fit.vutbr.cz> Cc: freebsd-performance@freebsd.org, Mike Tancsa <mike@sentex.net> Subject: Re: em forwarding performance (was Proposed 6.2 em RELEASE patch Message-ID: <20061125112216.GC91673@over-yonder.net> In-Reply-To: <20061125083605.GA17350@stud.fit.vutbr.cz> References: <200611200454.kAK4sdat083568@lava.sentex.ca> <7.1.0.9.0.20061120160757.14d4a728@sentex.net> <200611220247.kAM2l9JP095066@lava.sentex.ca> <20061122130947.GM20405@obiwan.tataz.chchile.org> <200611231652.kANGqJsr005016@lava.sentex.ca> <1164356894.4306.1.camel@massimo.datacode.it> <200611242027.kAOKRYZg012113@lava.sentex.ca> <20061124210305.GA49228@stud.fit.vutbr.cz> <200611242117.kAOLHuBP012313@lava.sentex.ca> <20061125083605.GA17350@stud.fit.vutbr.cz>
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On Sat, Nov 25, 2006 at 09:36:05AM +0100 I heard the voice of
Divacky Roman, and lo! it spake thus:
>
> hm.. now I am confused. the rule is that having I586_CPU improves
> performance because optimized bzero/bcopy is included (its not
> included if you only have I686_CPU).
Haven't we been by this before? It's not included even if you have
I586_CPU either.
See src/sys/i386/isa/npx.c, line 432:
#ifdef I586_CPU_XXX <--------
^^^
This has been disabled since r1.95, in 2001 (in 5-CURRENT days).
There may be SOMETHING about including I586_CPU that speeds things up,
but it ain't that.
--
Matthew Fuller (MF4839) | fullermd@over-yonder.net
Systems/Network Administrator | http://www.over-yonder.net/~fullermd/
On the Internet, nobody can hear you scream.
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