Date: Mon, 29 Dec 2008 19:56:04 -0600 From: Kevin Day <toasty@dragondata.com> To: Christian Weisgerber <naddy@mips.inka.de> Cc: freebsd-hackers@freebsd.org Subject: Re: lzo2 shows insane speed gap Message-ID: <A829168A-EE8E-4AC9-BB49-DDE788FA3F75@dragondata.com> In-Reply-To: <20081230004747.GA55542@lorvorc.mips.inka.de> References: <gjbf7c$hbm$1@lorvorc.mips.inka.de> <Pine.GSO.4.64.0812291512490.22968@zeno.ucsd.edu> <20081230004747.GA55542@lorvorc.mips.inka.de>
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> > > Oh, and everybody is invited to run > > $ cd /usr/ports/archivers/lzo2 && make > > and check for themselves. > > I've used lzo2 quite a bit in the past and never saw this, so I thought I'd try this on a few boxes we have... Output is from "make fetch ; time make" 8-core Opteron 2350 2.0ghz, 64GB RAM, FreeBSD 7.1-PRERELEASE (just before RC1 was tagged), amd64 41.464u 20.671s 1:02.04 100.1% 2430+1556k 0+0io 377pf+0w 4-core Opteron 280 2.4ghz, 4GB RAM, FreeBSD 7.0-RELEASE-p6, amd64 40.907u 18.638s 1:03.08 94.3% 2339+603k 182+91io 681pf+0w Dual Athlon MP 2100+ 1.73ghz, 1GB RAM, FreeBSD 6.3-RELEASE, i386 82.812u 44.963s 2:06.89 100.6% 959+37724k 32+82io 46pf+0w Dual P3 850mhz, 1GB RAM, FreeBSD 7.0-RELEASE-p4, i386 208.494u 84.935s 8:07.23 60.2% 2270+990k 17+87io 60pf+0w 4-core Opteron 2218 2.6ghz, 16GB RAM, FreeBSD 7.0-RELEASE-p4, amd64 38.893u 16.623s 0:55.53 99.9% 2290+591k 96+99io 48pf+0w Dual Xeon 3.06GHz, 4GB RAM, FreeBSD 7.0-RELEASE-p4, i386 60.910u 24.667s 1:22.54 103.6% 2143+988k 146+134io 105pf+0w Dual P3 866mhz, 2GB RAM, FreeBSD 7.0-RELEASE-p4, i386 169.135u 58.198s 3:52.71 97.6% 2443+1002k 160+99io 368pf+0w 2-core Core 2 Duo 2.33ghz, 2GB RAM, Mac OS X 10.5.6, i386 48.155u 29.896s 1:25.14 91.6% 0+0k 30+222io 1845pf+0w 4-core Xeon 2.66ghz, 6GB RAM, Mac OS X 10.5.6, i386 real 1m17.024s user 0m44.373s sys 0m34.249s None of these boxes were idle, so relative times are pretty useless, but i'm not seeing anything on the order of tens of minutes or hours. Is the source .tar.gz identical on all your systems? -- Kevin
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