Date: Sun, 09 Aug 1998 15:02:27 +0800 From: Stephen Hocking-Senior Programmer PGS Tensor Perth <shocking@prth.pgs.com> To: hackers@FreeBSD.ORG Cc: dg@root.com, jobaldwi@vt.edu, grog@lemis.com Subject: Re: AMD-specific kernel code (was: How long a wait?) Message-ID: <199808090702.PAA00669@ariadne.tensor.pgs.com> In-Reply-To: Your message of "Sat, 08 Aug 1998 23:49:51 MST." <199808090649.XAA23702@implode.root.com>
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> >The effect on CPU performance is also noticable: here are "make
> >world" times:
> >
> >Without write allocate:
> >
> >real 106m58.441s
> >user 63m0.960s
> >sys 20m25.035s
> >
> >With write allocate:
> >
> >real 114m16.402s
> >user 69m41.733s
> >sys 17m54.862s
> >
It looks like something that should be a tunable knob of some sort. I tend to
have processes that compute for a considerable period of time, which may
benefit, but Joe Average's make world clearly won't. Try it as a option in the
config file, or yet another flag to the npx device, or (best possible) a
sysctl flag, so that one may turn it off & on as required while the system is
up.
Stephen
--
The views expressed above are not those of PGS Tensor.
"We've heard that a million monkeys at a million keyboards could produce
the Complete Works of Shakespeare; now, thanks to the Internet, we know
this is not true." Robert Wilensky, University of California
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