At Thu, 25 May 2006 18:21:39 +0000 Alex <[EMAIL PROTECTED]> wrote: > Allan Gottlieb wrote: >> At Thu, 25 May 2006 10:40:26 +0000 Alex <[EMAIL PROTECTED]> wrote: >> >>>Allan Gottlieb wrote: >>> >>>>You have to do experiments. It depends heavily on your application >>>>mix. >>> >>>Yes, that would be the best, but I'm wondering how, because e.g. "time >>>bzip2 -9 foobar" wouldn't be helpfull. So now I've switched to "-Os" >>>and soon I can test, if it's a real difference. >> Please report back your findings, including the application mix you >> tested. Although "scientific" timed benchmarks are important, I would >> also be interested in how the system feels. For the latter ("feels"), >> you should qualitatively describe the use of the system (web server, >> desktop, laptop, etc) and what you commonly run (program devel, games, >> scientific/engineering apps, etc). >> thanks, >> allan > > Hi, > > I've a desktop system and I commonly use applications like firefox, > thunderbird and so on, kde, gaim and a terminal is nearly always > there. Sometimes I'm running vim or kate. > > If you're interested in some tests, not relevant for desktop systems, > there are some I made: > > Time wasted to compress a 416 mb tar: > bzip2 gzip > -O3 2m40.882s 1m20.445s > -Os 2m39.314s 1m21.157s > > decompress: > bzip2 gzip > -O3 0m52.575s 0m4.972s > -Os 0m53.387s 0m4.828s > > Convert 203 Mbs MP3s to WAV using LAME: > -O3 14m4.461s > -Os 16m50.599s > > from wav to mp3: > -O3 1m1.708s > -Os 1m12.841s > > Now I'm emerging -e world with -Os. When it is finished, I'll mail you > the results.
The conversion programs you ran might not stress the memory system. I suspect that they only keep a fixed size portion of the input and output files in memory when you run them with ever larger inputs. allan -- gentoo-user@gentoo.org mailing list