Simon Burge wrote:
Another NetBSD person with a mac Powerbook (a 400MHz G3 PPC cpu) has reported no change in cpu utilitisation at all between 0.12.3b and 0.12.4b - both before and after he was getting about 12.5-13% cpu utilisation decoding a 128kbps file.
I don't really have any more details than that, this is more a "for your info" mail. He is able to test patches and whatnot and may be able to provide an account for testing if you want/need it.
Could you put me in touch with this person?
On my 233MHz StrongArm I saw a reduction in CPU utilisation from 37% with 0.12.3b to 21% with 0.12.4b decoding the same 192kbps mp3. Here's the output of tcsh's "time" command for each:
before: 78.704u 3.579s 3:40.28 37.3% 0+0k 0+0io 162pf+0w after: 43.241u 3.788s 3:40.12 21.3% 0+0k 0+0io 160pf+0w
That's pretty nice. Which StrongARM CPU is that?
On my 220 MHz SA 1100, usage is also now at about 49 MHz.
This weekend I'll be concentrating on a rewrite of the Layer III Huffman decoding and requantization for hopefully even more performance gains.
Cheers, -rob