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  • From: "ML" <m.l AT compaqnet.fr>
  • To: Aaron Brice <abrice2 AT cox.net>, Phil/CERisE/KG6MBQ <cerise AT littlegreenmen.armory.com>
  • Cc: sm-discuss AT lists.ibiblio.org
  • Subject: RE: [SM-Discuss] License Choices
  • Date: Mon, 22 Jul 2002 09:31:42 +0100

> Would be easy and interesting to compare. I have a 1.2 GHz Athlon with
> 384M of memory. I'll do a "time cast -c -r mozilla" and compare it
> to a "time make" of the mozilla source in my home directory. People

This is a good idea, I'm trying it at the moment...
But you need to renice 10 your time make (since make process started by
sorcery'scripts priority is set at 10).

> with lower and higher performance computers could maybe do the same..
>
> On Sun, 2002-07-21 at 15:54, Phil/CERisE/KG6MBQ wrote:
> > Glenn Shannon insolently stated:
> >
> > > I believe the choice to use tmpfs was because compiling in memory is
> > > faster.
> >
> > Ahh yes, I've heard this myth. It sounds nice, doesn't it? Almost
> > believable. I think there's good reason to doubt it though.
> > In theory, compiling memory is faster because memory access is
> > faster than disk access.
> > In practice, where you've just unloaded a rather large tarball on
> > memory, it seems destined to end up in swap which will incur disk
> > access. Two of them at minimum in fact. One to write to virtual
> > memory, the other to read it back out.
> > I'm ignoring lots of other factors considering that disk access is
> > an order of magnitude slower than CPU time. It seems like disk access
> > is the thing to measure here. With that in mind, it seems like using
> > tempfs (which isn't exactly the most sophisticated fs in the world...)
> > over your native filesystem (which will almost certainly be more
> > sophisticated than tempfs and should have faster algorithmic run times)
> > is going to hopelessly slow things down.
> >
> > -Phil/CERisE
> >
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> > http://lists.ibiblio.org/mailman/listinfo/sm-discuss
>
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//
// M.L.
// Linux User #36502 ; ICQ #23832402
//





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