Re: Dual processors ?

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#246

From: Floyd Davidson
Date: Tue, 07 Jan 2003 15:31

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George Bell <MasterofTimeADim@netscape.net> wrote:
>warr wrote:
>> 
>> if a program is written for single CPU only, even though your OS is
>> coordinating the 2 cpus and this program may be running on 2 cpus, but
>> they are not running concurrently. they are still sequential
>> processing.
>> 
>
>
>How do you know this is true for Linux?  I don't believe that the load 
>balancing algorithm implemented for SMP by the Linux kernel will make 
>such bad decisions when allocating CPU time to the processes.

As the figures I just posted in a separate article shows, the 
SMP kernel is actually 2% faster (on this particular motherboard)
than a non-SMP kernel.  That is for sequential processing of the
make job!  With parallel processing running up to 4 processes at
once, the non-SMP job took 1.7 times as long.

>That just tells me that Windows sucks, which I already knew.

Exactly!

-- 
Floyd L. Davidson         <http://www.ptialaska.net/~floyd>
Ukpeagvik (Barrow, Alaska)                 floyd@barrow.com

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From: Floyd Davidson <floyd@ptialaska.net>
Newsgroups: aus.computers.linux,comp.os.linux.hardware,aus.ads.forsale.computers.used
Subject: Re: Dual processors ?
Date: 07 Jan 2003 06:31:00 -0900
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