Olm-e said : > Aymeric Mansoux wrote: > > Olm-e said : > > > >> ok, thanks for the rather clear answer ... > >> > >> from experience, I only have tested and witnessed (huge) difference in > >> video compression time (i.e. with ffmpeg2theora) on 64bit compared to > >> 32bit installations ... on sound parts, I must admit I have not realy > >> made tests to compare... > >> > > > > Ok, could you make some benchmarks if you have time? > > like... for example how ffmpeg2theora, ffmpeg, oggenc, compare on the > > same 64bits machine with: > > - amd64 kernel on a 386 Debian OS > > - amd64 kernel on a amd64 Debian OS > > > > > > > test done : > on a AMD Phenom 9950 with 4 gig ram, systems installed on USB drive (8 > gig with 2 root partitions in ext3 for test systems) > > for a 4min57sec mpeg2 PAL DVD file (720x...@9000kb/s) transcoding to > ogg/theora with ffmpeg2theora default (ffmpeg2theora bla.dvd -o bla.ogv ) > > on a lenny 5.01 amd64 with kernel 2.6.26-2-amd64 it took > 10min59sec > > on a lenny 5.01 i386 with same kernel it took > 13min34sec > > on the same lenny with kernel 2.6.26-2-686 it took > 14min58
Thanks, that's really useful info! what about the amd64 kernel from the lenny i386 distribution? Also to make the test more complet it would be helpful to know which gcc flags have been used for the ffmpeg2theora binaries. a. > > I'll test with oggenc and ffmpeg tomorow > > cheers, > > Ol. > > > --- > [email protected] > irc.goto10.org #pure:dyne > --- [email protected] irc.goto10.org #pure:dyne
