Le Sun, 11 Mar 2001, guenter geiger a écrit :
So 1) have you the same poor performance with PD disc i/o objects ? 5) how much tracks can you play on which hardware ?
I am able to read 24 tracks easily, writting is another issue. What computer do you have ? Its on a 500 Mhz, IDE disk with DMA enabled.
I have a dual 400 with scsi and fast hardisc and 128 mb. performances reported were with the standard readsf~ object.
- Is it specific to pd linux ?
- Do i set something not as it should ?
- Is it because of no special optmisation in pd for disc i/o ?
I am not sure about the builtin objects (readsf~ writesf~), but I can't think of any further optimization in sfread~ and sfwrite~. (Doesn't mean that there is no way to do it faster ...)
Guenter
Meanwhile I have tested the sfread~ and sfplay~ provided in your
external lib, and I have to say they seem to work better.
EXCEPT that they load everything in ram, aren't they ?
I have just made the test to open 8 tracks or so with sfread~ and pd memory
size kept growing until it dies with "broken pipe".
Regards,
Linium