Date: Wed, 18 Mar 1998 09:29:52 -0500 (EST) From: "Alok K. Dhir" <adhir@worldbank.org> To: ortmann@sparc.isl.net Cc: current@FreeBSD.ORG Subject: Re: Worldstone Continued... Message-ID: <Pine.NEB.3.96.980318091721.2441A-100000@shadow.worldbank.org> In-Reply-To: <FC7AF345699FEFF1852565CB0016FD46.0016845D852565CB@worldbank.org>
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On Tue, 17 Mar 1998 ortmann@sparc.isl.net wrote:
> > OK - I got a lot out of our last discussion, and now my -current
> > world builds in 1:23 (!!). This is WITHOUT softupdates, but using
> > async mounts...
>
> Were you the gentleman who posted about compiling in 6+/4+ hours?
Indeed - that was me. My original post claimed ~6 to ~2.5 due to
softupdates. The ~6 was heavily disputed, though, and I had to concede
that it may have been substantially less, like ~4.
> What were the main tricks to speeding your system up?
1. I seperated /usr/src and /usr/obj onto two seperate physical disks.
2. I uncommented the "CFLAGS= -O -pipe" line in /etc/make.conf (which
really ought to be the default).
3. I mounted both disks async (I thought some crashes/hangs I was having
may have been related to softupdates).
Since then, I have gone back to softupdates (since I traced the problem to
something other than softupdates). In fact, I don't believe I've had a
single softupdates related crash so far (* knock knock *).
I haven't reran the worldstone test yet, though. I'm waiting for the
recent rash of -current problems to settle a bit.
> (I have been less impressed than I could have been using async,noatime.)
For speeding up writes, there's nothing like softupdates (if you're brave,
and the system is not for production use that is...).
> Thanks!
No problem.
Cheers!
-------------------------------------------------------------------- \||/_
Alok K. Dhir Phone: +1.202.473.2446 oo \
R7-003, ITSMC Email: adhir@worldbank.org L_
The World Bank Group Washington, DC \/
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