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Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and f
From: |
Frank Brickle |
Subject: |
Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and fusb parameters |
Date: |
Wed, 25 Jul 2007 17:03:19 -0400 |
User-agent: |
Thunderbird 1.5.0.12 (X11/20070604) |
Hsin-mu Tsai wrote:
> I didn't change the nice value (with top or nice, etc.). I thought
> enabling the real time setting (gr.enable_realtime_scheduling) in the
> script will automatically change priority to (max + min) /2.
I don't actually know what the gr.enable_realtime_scheduling
function does; you're probably right. On the other hand I'm not
sure that effect is sufficient to get what you want.
As I understand it, what the low-latency/realtime scheduling
provide are more frequent opportunities for high-priority
processes to run. It's sheer speculation but I wonder whether your
gnuradio process isn't competing with something else at the same
priority, so that giving your process a slight edge in priority
might take care of the problem. I spent a great deal of time a
couple of years ago trying to balance the JACK daemon against the
X server, without much success and a with lot of frozen mice. It's
only the most recent patches that really give solid low-latency
performance with the current audio subsystems. The performance is
very good now, though.
> are 'priority' and 'nice' the same thing?
Niceness is an increment to the priority value. Nice-ing in the
negative direction improves the priority.
--
Managing developers is like herding cats.
Managing volunteer developers is like herding bats, in the dark.
- Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and fusb parameters, (continued)
- Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and fusb parameters, Frank Brickle, 2007/07/25
- Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and fusb parameters, Hsin-mu Tsai, 2007/07/25
- Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and fusb parameters, Frank Brickle, 2007/07/25
- Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and fusb parameters, Hsin-mu Tsai, 2007/07/25
- Re: [Discuss-gnuradio] High packet loss problem (samples dropped?) and fusb parameters,
Frank Brickle <=