[tremor] Memory optimizations

[Segher Boessenkool]

On 29-mrt-04, at 22:56, timmy brolin wrote:

>> The ipod has two arm7tdmi cores running at up to > 90MHz, so this 
>> should be
>> no problem. My problem is with memory bandwidth - the 32MB main 
>> memory is
>> connected to the CPUs on a very slow bus. But we have 96kB fast SRAM.
>> Unoptimized ivorbisfile_example runs at about 50-80% speed depending 
>> on bitrate.
>
> There is no cache? If there is... Turn it on and it will most likely 
> solve the problem for you.

Dunno if it has a cache, but most ARM7 caches are pathetic (small,
non-harvard, small associativity, pseudo-random replacement, etc.)

<p>Segher

--- >8 ----
List archives:  http://www.xiph.org/archives/
Ogg project homepage: http://www.xiph.org/ogg/
To unsubscribe from this list, send a message to 'tremor-request at xiph.org'
containing only the word 'unsubscribe' in the body.  No subject is needed.
Unsubscribe messages sent to the list will be ignored/filtered.