Date: Thu, 12 Mar 1998 14:04:22 +1100 From: Bruce Evans <bde@zeta.org.au> To: hasty@rah.star-gate.com, jkh@FreeBSD.ORG Cc: current@FreeBSD.ORG Subject: Re: my worldstone Message-ID: <199803120304.OAA12807@godzilla.zeta.org.au>
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>So, in the spirit of getting specific, I'd like to suggest the
>following set of prototype ground rules to anyone daring to post their
>"worldstone rating" here:
>
>Before beginning a make world test, the following conditions must be
>met:
>
>1. /usr/obj must be empty (no "clean" pass to add minutes to time).
>
>2. /usr/obj *must* be mounted async (too few mount it sync and it does
> bestow a large advantage).
It should be mounted -noatime too, unless you want to throw away "free"
optimizations.
>3. /usr/src must reside on a physically different disk (unless ccd
> is in use, in which case this should be noted). I know that's hard
> for some folks, but if you're running off a single drive then your
> numbers just won't be competetive.
/usr/src should probably be mounted -noatime too.
My numbers are competitive (1:37 on a K6/233 FIC-2007 64MB with 1
Quantum ST IDE drive in DMA mode, and /usr/src/Makefile tweaked to
build al tools static, and DESTDIR on the same file system as /usr/obj
(async,noatime,not-the-root-fs)). makewhorldstone should not be
disk intensive on systems with enough RAM. If I had more time, then
I would repeat the benchmark with the drive in PIO mode to prove how
unimportant DMA mode and fast disk seek times are for non-disk-intensive
non-seek-intensive benchmarks like this. The more useful "makeahllstone"
is disk intensive, since it usually spends most of its time traversing
trees to find nothing to do.
>4. -pipe must be added to CFLAGS in /etc/make.conf. *no other build
> optimizations or omissions can be done!* Same goes for additions -
> no kerberos bits enabled.
>
>5. Source tree must be -current to within 7 days of the other people
> comparing numbers. No point in compiling old bits just before
> perl5 entered the tree, or whatever, since that obviously skews the
> numbers.
Building an agreed-on old version would be better (check one out from
cvs). This would defeat my Makefile optimizations :-).
>...
8(?) $TMPDIR should probably be on an mfs. I haven't tried this yet.
K6/233:
5273.18 real 3496.20 user 993.51 sys
8620 maximum resident set size
605 average shared memory size
608 average unshared data size
130 average unshared stack size
5923250 page reclaims
18460 page faults
0 swaps
50889 block input operations
28885 block output operations
0 messages sent
0 messages received
8 signals received
384427 voluntary context switches
250941 involuntary context switches
Bruce
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