Re: [linux-audio-dev] NPTL and real-time sched semantics

2003-05-30 Thread Paul Davis
Has anyone done any low-latency audio testing with the new native pthread implementation (comes with rh9.0 at least)...? I was just reading through [1] and noticed the following (in section 8): Realtime support is mostly missing from the library implementation. The system calls to select

[linux-audio-dev] high-res time measurement?

2003-05-30 Thread jacob robbins
I'm a little green at time measurement facilities available in linux, In my host, I would like to be able to measure how much time each individual LADPSA plugin takes. Assuming I do realtime work with the smallest buffer sizes my system can handle, what options are available to me to measure

Re: [linux-audio-dev] high-res time measurement?

2003-05-30 Thread Jack O'Quin
jacob robbins [EMAIL PROTECTED] writes: I'm a little green at time measurement facilities available in linux, In my host, I would like to be able to measure how much time each individual LADPSA plugin takes. Assuming I do realtime work with the smallest buffer sizes my system can handle,

Re: [linux-audio-dev] high-res time measurement?

2003-05-30 Thread Paul Davis
In my host, I would like to be able to measure how much time each individual LADPSA plugin takes. Assuming I do realtime work with the smallest buffer sizes my system can handle, what options are available to me to measure time on this small scale? I know that the typical system calls time and

Re: [linux-audio-dev] high-res time measurement?

2003-05-30 Thread Josh Green
On Thu, 2003-05-29 at 15:23, jacob robbins wrote: I'm a little green at time measurement facilities available in linux, In my host, I would like to be able to measure how much time each individual LADPSA plugin takes. Assuming I do realtime work with the smallest buffer sizes my system can

Re: [linux-audio-dev] NPTL and real-time sched semantics

2003-05-30 Thread Steve Harris
On Thu, May 29, 2003 at 06:20:34 -0400, Paul Davis wrote: what would be *really* bad is if they actually changed the code so that attempts to set SCHED_FIFO are not honored because they believe they are useless. i don't know which of these is true. My main dev machien is RH9 and I haven't

Re: [linux-audio-dev] high-res time measurement?

2003-05-30 Thread Steve Harris
On Thu, May 29, 2003 at 04:23:48 -0600, jacob robbins wrote: I'm a little green at time measurement facilities available in linux, In my host, I would like to be able to measure how much time each individual LADPSA plugin takes. Assuming I do realtime work with the smallest buffer sizes my

Re: [linux-audio-dev] high-res time measurement?

2003-05-30 Thread Steve Harris
On Thu, May 29, 2003 at 04:28:07 -0700, Josh Green wrote: void rdtsc(unsigned int *lsi, unsigned int *msi) { __asm__ (rdtsc : =a (*lsi), =d (*msi)); } There is an ll version that writes directly to a 64bit int. c.f. msr.h - Steve

[linux-audio-dev] A best event delegation strategy?

2003-05-30 Thread Lukas Degener
Hi list, Here is a propblem that is propably already solved in another context, so i would like to know some opinions on it: I am trying to implement a (hopefully:-) ) simple general-purpose event delegation architecture. The actual application will propably be something like a network of