Date: Sun, 31 Aug 2003 17:15:21 -0500 From: "Charles Howse" <chowse@charter.net> To: "'Kent Stewart'" <kstewart@owt.com>, "'ODHIAMBO Washington'" <wash@wananchi.com> Cc: freebsd-questions@freebsd.org Subject: RE: scripting the buildworld/installworld process Message-ID: <002701c3700d$5ef73190$04fea8c0@moe> In-Reply-To: <200308311500.29938.kstewart@owt.com>
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> When I started timing my buildworlds, I figured out that you need > everything but the right hand stuff in the following > > AMD Athlon 2000+ XP > 877.636u 233.835s 23:02.33 80.4% 1350+1662k 46008+7469io > 2359pf+0w > bw w -j2 > 891.151u 303.327s 35:02.77 56.8% 1305+1600k 52256+138679io > 2749pf+0w > bw w -j3 > 894.429u 305.373s 31:29.87 63.4% 1305+1595k 50306+138970io > 1914pf+0w > bw w -j4 > 893.259u 310.180s 32:43.57 61.2% 1308+1597k 56102+138705io > 2145pf+0w > bw w -j5 > 893.563u 311.353s 30:31.44 65.7% 1302+1591k 53927+138930io > 2331pf+0w > > The wall clock time is really how efficient your process is. The fact > that your user time or sys time is faster doesn't mean much > if the wall > clock time is 1/3 longer. > > I haven't automated timing this part because I time the whole > script and > not just the build. I would cut off the right hand side but it is too > trivial to use just "time mkworld" and cut and paste the time into a > "cat >> times.log" of my builds. This also lets me add comments in > addition to the build time information. For example, the AMD > 2000+ was > important because that was the first build after an upgrade from an > Intel P III 866. The upgrade was needed because the old mobo went > flaky. > > I think that once you have it setup, I will probably make my > KISS simple > script more complicated :). I have one machine that the mouse doesn't > work in single user mode and including the timing into my mkworld > script would save time. I can always go back and edit my time log to > include the comments. If I have a choice, I would add the > date field to > the right hand side so that I can connect the time to the build log. I read "briefly" your web page about the -j urban legend. >From the stats above, it looks like it runs faster without the -j flag...? That might be something interesting to play with on my Celeron 300 w/ 64MB.help
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