Subject: Re: [linux-audio-dev] lowish-latency patch and toolchain
From: Andrew Morton (andrewm_AT_uow.edu.au)
Date: Tue Jul 11 2000 - 12:01:19 EEST
Juhana Sadeharju wrote:
>
> Now the latency jumped from 2.3 ms to 7 ms
7 ms was when starting the X server.
With "typical workloads" I'm currently showing the following latency
distribution:
0-1 msec 99.994%
1-2 msec 0.003%
2-3 msec 0.002%
4-5 msec 0.001%
This is with the previously-posted six conditional_schedule()s and a
kinder, gentler zap_page_range().
Progress is currently bogged down chasing irrelevant bogosity in the
memory manager. Unless magic happens I'll shelve that and get something
less ambitious out.
But audio guys, please comprehend this: there is _no point_ in
submitting this work for inclusion unless you can stand in front of
Linus with your hands on your hearts and say "This works for us".
I am quite mystified as to why you're putting so much effort into joint
letters and such, and so little into testing a purported solution. I've
had two emails which said "cool for me", an apology from Paul B-D who is
travelling and that's all.
For your convenience I have attached here Saturday's patch against
2.4.0-test3-pre4. Go compile.
This archive was generated by hypermail 2b28 : Tue Jul 11 2000 - 13:05:54 EEST