> > The ~0.3x I get on my Pentium 133Mhz is with -h and CBR, but my surprise
> Linux, gcc 2.95.2 compiled, Pentium 166 MMX (200MHz):
> duration 6:30, rate 0.9744
> Win95, Intel4.5 compiled, Pentium 166 MMX (200MHz):
> duration 6:47, rate 0.9345
> Win95, Intel4.5 compiled, Pentium 133:
> duration 10:23, rate 0.6103
Woah, that's pretty big difference, isn't it??
> So, when you get only rates around 0.3x, then there are following possibilities:
> a) your test song is hard to encode
Possible, but I haven't seen much different rates... so are all my waves that
hard to encode? Improbable...
> b) you use an older, slower version of LAME
Well, it was based on some older versions, I'm now testing it with the version
I have now, which is Lame 3.69. Is there much difference in speed from the
newer versions?
Anyway, the results, encoding with lame -h track_07.wav, a song called Black
Night, by Deep Purple on my Pentium 133MHz with lame version 3.69:
(as you can see below)
Linux shell> lame -h track_07.wav
LAME version 3.69 (www.sulaco.org/mp3)
GPSYCHO: GPL psycho-acoustic and noise shaping model version 0.77.
Using polyphase lowpass filter, transition band: 15115 Hz - 15648 Hz
Encoding track_07.wav to track_07.wav.mp3
Encoding as 44.1 kHz 128 kbps j-stereo MPEG1 LayerIII (11.0x) qval=2
Frame | CPU/estimated | time/estimated | play/CPU | ETA
8018/ 8018(100%)| 0:08:42/ 0:08:42| 0:09:18/ 0:09:18| 0.4011| 0:00:00
So, it's a bit faster than the 0.3x I claimed earlier, indeed. I guess this
version is quite a bit faster than the (not so very old) version I checked
it with before. Development is going quite fast, aparantly :)
But it's still not the 0.61x you got on your 133MHz... I guess that 3.80 CVS
is even faster (in CBR)???
> c) your compiler does some strange things
I have egcs-2.91.66, I have heard some bad stories about egcs, though...
> d) your Pentium runs at half speed
What!? :) That seems even less probable and would be pretty stupid :) I think
I would have noticed this long before. Besides, how can such a thing be
accomplished?
Ivo
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