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To: robsch@robkaos.ruhr.de (Robert Schien)
cc: hardware@FreeBSD.ORG
From: dkelly@hiwaay.net
Subject: Re: 'make world' on P6 system takes 3 h 
In-reply-to: Message from robsch@robkaos.ruhr.de (Robert Schien) 
   of "Tue, 09 Sep 1997 23:31:50 +0200." <m0x8Xt0-00066pC@robkaos.ruhr.de> 
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Date: Wed, 10 Sep 1997 07:12:41 -0500
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Robert Schien writes:
>
> I have the impression that there is something wrong with my
> P6 system. 'make world' (3.0-current) takes 3 hours!
> 
> The hardware is:
> Asus P6NP5 motherboard with 64 MB EDO, 200 MHz PentiumPro (256k).
> Asus SC-200 SCSI host adapter
> 4 GB IBM DCAS hard disk (this is where /usr/src and /usr obj reside).

I have a PPro 166 with 512k cache, 32M FP RAM, 2G Barracuda, 2940. "make
world" for 2.2.2 (recent cvsup) takes 2:47. Mounting /usr with "-o async"
drops that time to 2:15. It was interesting to note "time" reported
almost exactly the same amount of time in CPU for both.

dg@root.com said:
> >CFLAGS= -O2 -m486 -pipe
>    Make that "-O" and kill the -m486. The -O2 nearly doubles the
> compile time and provides almost no measurable improvement in most
> cases. 

Was -O the default at some time during 2.x's life? I remember my old MB
could "make world" in 5 hours or so once, and was up to 9 hours by the
time I replaced it.

--
David Kelly N4HHE, dkelly@hiwaay.net
=====================================================================
The human mind ordinarily operates at only ten percent of its
capacity -- the rest is overhead for the operating system.