Date: Mon, 1 Mar 2004 17:43:11 +1100 (EST) From: Bruce Evans <bde@zeta.org.au> To: Don Lewis <truckman@freebsd.org> Cc: vince@oahu.WURLDLINK.NET Subject: Re: buildworld times Message-ID: <20040301165621.V12615@gamplex.bde.org> In-Reply-To: <200402290733.i1T7X67E091180@gw.catspoiler.org> References: <200402290733.i1T7X67E091180@gw.catspoiler.org>
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On Sat, 28 Feb 2004, Don Lewis wrote:
> On 28 Feb, Vincent Poy wrote:
> > I was wondering what people are getting as the fastest make
> > buildworld times since it seems like a P4m-2.6Ghz 2GB RAM, 7200RPM HDD
> > machine when using make -j4 buildworld or just make buildworld takes 2.5
> > hours. I guess I'm trying to look for what the average times for
> > buildworld is supposed to be for a Pentium 4 Northwood based platform.
>
> This seems way too slow to me.
>
> My Athlon XP 1900+, 1GB RAM, 10K RPM SCSI drive machine running
> 5.2-CURRENT with the kernel options:
> SCHED_ULE
> INVARIANTS
> INVARIANT_SUPPORT
> WITNESS
> WITNESS_SKIPSPIN
> DEBUG_VFS_LOCKS
> and no /etc/malloc.conf runs buildworld in
> 2563.925u 1977.980s 2:01:04.11 62.5% 2715+1768k 20833+2389io 6587pf+0w
> while running setiathome.
This seems way too slow to me :-). Well, maybe not with all those
debugging flags.
My Athlon XP 1600 overclocked by 146/133, 512MB RAM, 7200 RPM IDE drive
machine ran makeworld in 1390 seconds when it was new 2.4 years ago:
%%%
Athlon1532
--------------------------------------------------------------
>>> elf make world completed on Fri Jan 4 00:00:15 EST 2002
(started on Thu Jan 3 23:37:04 EST 2002)
--------------------------------------------------------------
1390.18 real 913.56 user 232.63 sys
...
9055054 page reclaims
21976 page faults
0 swaps
31885 block input operations
4960 block output operations
...
346041 voluntary context switches
423794 involuntary context switches
%%%
My most recent complete buildworld in a (mostly) controlled environment
took 2788 seconds last November:
%%%
bde-current with ... + KSEIII + idlezero_enable + pmap - even coloring
async mounted /c
sources in /cbak/src
no /etc/make.conf
after perl removal and new gcc and ufs2 and aout utilities removal
after kerberos5 addition
after rescue addition
with 2 fairly new drives
1532 MHz AthlonXP 1600
1024MB
make catches SIGCHLD + par-all
i686_bzero used and replaced by one that uses SSE (movntps)
kernel up 8 days
--------------------------------------------------------------
>>> make world completed on Tue Nov 11 21:55:53 EST 2003
(started Tue Nov 11 21:09:25 EST 2003)
--------------------------------------------------------------
2788.41 real 2316.49 user 357.34 sys
...
18994831 page reclaims
13700 page faults
0 swaps
22756 block input operations
7747 block output operations
...
289983 voluntary context switches
809112 involuntary context switches
%%%
Normally I reboot to run benchmarks, but the above just ensures not
getting any local _source_ optimizations by building a freshly checked
out copy of the src tree and no /etc/make.conf.
The machine now has 1024MB of memory and faster drives. The build
time was increased mainly by gcc compile-time pessimizations (80%
of the user time) and more things to compile (50% of everything?)
and breakage of not building dependencies (5-10% of overything).
The larger RAM and fast drives only compensate for 5-10% of the
bloat.
Bruce
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