On 26 April 2012 20:15, Matthew Seaman <m.sea...@infracaninophile.co.uk> wrote: > On 26/04/2012 20:01, Chris Rees wrote: >> hydra# cd /usr/ports && time make MAKE=~crees/bin/make-static index >> >> Generating INDEX-9 - please wait.. Done. >> 729.770u 120.841s 7:45.10 182.8% 920+2676k 5251+116484io 7750pf+0w >> >> hydra# time make MAKE=~crees/bin/make-dynamic index >> >> Generating INDEX-9 - please wait.. Done. >> 771.320u 133.540s 8:07.83 185.4% 609+2918k 474+116484io 570pf+0w >> >> We have a 10% slowdown (or 11% speedup, depending on your figures) when >> using a dynamically loaded make. > > I don't think you can validly conclude much from just one sample of each > type. Try repeating those tests enough that you can do some decent > statistics. > > Oh, and you should probably either discard the first few results, or > else take pains to flush[*] the buffer cache between each run, so you > end up measuring the same thing repeatably.
Had I done the tests the other way around, I may agree with you, but the second test should benefit from any buffering, and it is *still* slower. Look, I know it's not a perfect benchmark, it was just some food for thought-- a difference of 10% is pretty significant, and I don't think you can blame that on a solar flare. Chris _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
