Re: Audio encoders optimized for altivec (I have a G4)
On 25 Apr, this message from Michel Dänzer echoed through cyberspace:
> On Wed, 2002-04-24 at 15:48, David Stanaway wrote:
>> On Wed, 2002-04-24 at 08:13, Michel Dänzer wrote:
>> > What clock speed etc. is that? I get more than realtime with a 667 Mhz
>> > G4. The compression you want to achieve probably also matters, I usually
>> > encode for 160 kBit/s average rate and leave the rest at defaults.
>>
>> Actually, it varies. I can get a little better than realtime when I am
>> not ripping (Using cdparanoia, I get about 3x read rates from the TiBook
>> DVD). I have the 500 MHz processor.
>
> Oh yeah, ripping bogs down the whole system very badly here despite DMA
> and unmaskirq. Any suggestions for improvements are highly welcome
> there.
IDE subsystem having long-held locks? The other day, due to a bug in my
code, I was writing a 800MB-file to the IDE disk in my TiBook, which
completely locked the machine up for around 15 seconds.... window
manager completeley dead. No clock update, no load update, no mouse
movement, no keyboard entry, nothing. Just disk noise telling me it's
alive ;-)
Also, often I get around a second of the same symptom when the disk is
sync'ed out, or on spinup from sleep. As long as not everything is
written to disk (or read?), the _whole_ system just sits and waits.
Cheers
Michel
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