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Date:      Fri, 24 Jan 2003 10:07:01 +0100 (CET)
From:      Attila Nagy <bra@fsn.hu>
To:        Nate Lawson <nate@root.org>
Cc:        cvs-all@FreeBSD.org, "" <cvs-committers@FreeBSD.org>
Subject:   Re: cvs commit: src/sys/i386/i386 identcpu.c initcpu.c locore.s
Message-ID:  <Pine.LNX.4.50.0301241002530.21553-100000@scribble.fsn.hu>
In-Reply-To: <Pine.BSF.4.21.0301231129060.72179-100000@root.org>
References:  <Pine.BSF.4.21.0301231129060.72179-100000@root.org>

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Hello,

> The patch merely enables an Auxiliary Processor on equipment that
> supports HTT.  Thus, 4.x still has all its original SMP weaknesses that
> will lead people (eventually) to 5.x including the fact that only one
> process can be active in the kernel at a time.
And what about performance? I mean those "Auxiliary Processors" are
"weaker" than the real ones, so scheduling CPU intensive processes to them
makes a weird assymmetry. In average for example with a dnetc client
what's better? :)
Running two processes with HT turned off, or running four of them with HT
on?

Just curious, I do not have a HT capable machine...

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Attila Nagy					e-mail: Attila.Nagy@fsn.hu
Free Software Network (FSN.HU)		  phone @work: +361 210 1415 (194)
						cell.: +3630 306 6758

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