[vorbis] Choosing a processor

Rik Hemsley rik at kde.org
Tue May 29 11:51:12 PDT 2001



#if Joane Lispton
> Hello!
> 
> I am about to buy a new computer, and because encoding/decoding .ogg files 
> is the most processor intensive thing I intend to regularly do, I would like 
> to know which is the "recommended" processor for real-time encoding (I 
> record my favourite radio shows).

PIII (Celeron) (Coppermine) 600

---------

rik at without toencode > time oggenc track15.cdda.wav 
Opening with wav module: WAV file reader
Encoding "track15.cdda.ogg" [100.0%] [ 0m00s remaining] |

Done encoding file "track15.cdda.ogg"

        File length:  3m 46.0s
        Elapsed time: 1m 40.9s
        Rate:         2.2482
        Average bitrate: 117.7 kb/s

oggenc track15.cdda.wav  97.94s user 1.31s system 98% cpu 1:40.90 total

---------

rik at without toencode > time oggenc -b 256 track15.cdda.wav 
Opening with wav module: WAV file reader
Encoding "track15.cdda.ogg" [100.0%] [ 0m00s remaining] |

Done encoding file "track15.cdda.ogg"

        File length:  3m 46.0s
        Elapsed time: 1m 46.6s
        Rate:         2.1263
        Average bitrate: 222.1 kb/s

oggenc -b 256 track15.cdda.wav  104.61s user 1.40s system 99% cpu 1:46.49 total

---------

So for -b 128, slightly better than 3x realtime.
For -b 256, exactly 3x realtime.

Rik

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