Messages in this thread | | | Subject | Re: Bad MIDI performance : 10ms latency instead of the expected | Date | Thu, 26 Aug 1999 21:41:56 +0100 (BST) | From | Alan Cox <> |
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> > if(current->need_resched()) > > schedule(); > > } > Do you think there are some benefits by inserting the re-schedule in the > drivers/sound/mpu401.c file ? ( less CPU usage) > > for (timeout = 30000; timeout > 0 && !output_ready(devc); timeout--); > > But since the FIFO is only 2 bytes long = 600usecs, > the schedule() could cause a MIDI bandwidth decrease, > but would keep CPU load down , right ? > Why was the MPU401 code not tuned that way ?
Hannu tuned MPU401, Im not precisely sure how he tuned it, but it should be sufficiently short the need_resched check isnt needed
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