Messages in this thread | | | Date | Sun, 23 Jan 2005 12:56:58 +1100 | From | Con Kolivas <> | Subject | Re: [PATCH]sched: Isochronous class v2 for unprivileged soft rt scheduling |
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Paul Davis wrote: >>The idea is to get equivalent performance to SCHED_FIFO. The results >>show that much, and it is 100 times better than unprivileged >>SCHED_NORMAL. The fact that this is an unoptimised normal desktop >>environment means that the conclusion we _can_ draw is that SCHED_ISO is >>as good as SCHED_FIFO for audio on the average desktop. I need someone > > > no, this isn't true. the performance you are getting isn't as good as > SCHED_FIFO on a tuned system (h/w and s/w). the difference might be > the fact that you have "an average desktop", or it might be that your > desktop is just fine and SCHED_ISO actually is not as good as > SCHED_FIFO.
<pedantic mode> On my desktop, whatever that is, SCHED_FIFO and SCHED_ISO results were the same. </pedantic mode>
> >>with optimised hardware setup to see if it's as good as SCHED_FIFO in >>the critical setup. > > > agreed. i have every confidence that Lee and/or Jack will be > forthcoming :)
Good stuff :).
Meanwhile, I have the priority support working (but not bug free), and the preliminary results suggest that the results are better. Do I recall someone mentioning jackd uses threads at different priority?
Cheers, Con
P.S. If you read any emotion in my emails without a smiley or frowny face it's unintentional and is the limited emotional range the email format is allowed to convey. Hmm.. perhaps I should make this my sig ;) [unhandled content-type:application/pgp-signature] | |