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To: John-Mark Gurney <gurney_j@resnet.uoregon.edu>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Fri, 12 Nov 2004 02:28:57 PST."
             <20041112102856.GA57546@funkthat.com> 
Date: Fri, 12 Nov 2004 11:34:03 +0100
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Subject: Re: cvs commit: src/usr.bin/make job.c job.h main.c make.c 
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In message <20041112102856.GA57546@funkthat.com>, John-Mark Gurney writes:
>Poul-Henning Kamp wrote this message on Fri, Nov 12, 2004 at 09:59 +0100:
>> Please see:
>> 
>> 	http://phk.freebsd.dk/misc/make.png
>> 
>> It shows the loadaverage for "make -j 12 -s buildworld" with and without
>> this code.
>
>Thanks for doing this! :)
>
>Am I to guess/read from the graph that the total time to buildworld
>was the same w/ and w/o?

Yes, for this particular case dual Opteron, 4G ram, make -j 12 builworld)
there is no statistically significant difference in overall time.

If it had less ram it would probably be an improvement because the
limit prevents overcommitting RAM with processes we can't really
service with CPU anyway.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.