studio32: great piece of info ... I noticed that just yesterday after work ... the whole DAW completely unresponsive after random periods of time. Hard reboot was necessary. So out with IRQ balance ...
DioXide: I usually don't fool around with system stuff but these last months, I was completely out of the loop concerning my current music projects due to job work load. So I've been following kernel development from work a bit more closely as I think it shall soon be time to upgrade (lots of RT stuff is gradually merged back to the kernel code baseline).
As to the DSP load, it's never been a problem either in my case. It's just that I quickly compared jackdmp and jackd (both latest svn code) and jackdmp does not show a 4% dsp load, more like 1%, when the daemon is doing nothing but waiting for audio. I really need vacation now to test all these new goodies ... I definitely think it is worthwhile as there tons of bug fixes in other areas of the kernel.
kernel 2.6.32 is out
Moderators: raboof, MattKingUSA, khz
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studio32
Re: kernel 2.6.29 is out
@ Thorgal, do you give your feedback to the maker of the RT patches? I think they would like it and would benefit from it.
See also interview with those guys elsewhere on this board.
See also interview with those guys elsewhere on this board.
Re: kernel 2.6.29 is out
Studio32: no I usually don't because I had been using the same kernel for a LONG time (2.6.24.3-rt3). It's only recently that I started looking into more recent kernels. But in such a botched way due to lack of time that my feedback is not really useful at the moment.
Re: kernel 2.6.29 is out
So, I have removed the irqbalance, and now I am testing the new kernel. First I did a stress test at low lat. It took it no sweat except for rosegarden that had given up on me 
But ardour, jamin and dssi-vst were in good shape all the way.
Now, I am just using it normally, playing the Pianoteq VSTi in a "gentle" way through dssi-vst at 1.3ms latency. Nothing else is opened, I just want to have some cool time. Been doing that for 1/2 an hour, not seen a single xrun (I am using wine 1.1.15 by the way).
So far so good
kernel 2.6.29-rt1
no irqbalance
hpet timer
jack MIDI handling. Jack is jack1 svn@3471
(for the record, I use an intel mobo and core 2 duo proc - so 32bit system, 4G of ram, and I use the performance governor for the CPU, which means I disabled the frequency scaling).
Will keep on testing for a while but it looks like it's on the right track ...
But ardour, jamin and dssi-vst were in good shape all the way.Now, I am just using it normally, playing the Pianoteq VSTi in a "gentle" way through dssi-vst at 1.3ms latency. Nothing else is opened, I just want to have some cool time. Been doing that for 1/2 an hour, not seen a single xrun (I am using wine 1.1.15 by the way).
So far so good
kernel 2.6.29-rt1
no irqbalance
hpet timer
jack MIDI handling. Jack is jack1 svn@3471
(for the record, I use an intel mobo and core 2 duo proc - so 32bit system, 4G of ram, and I use the performance governor for the CPU, which means I disabled the frequency scaling).
Will keep on testing for a while but it looks like it's on the right track ...
Re: kernel 2.6.29 is out
I installed the same kernel (2.6.29-rt1) on my old laptop, a Dell latitude with 1GB RAM, 1.6GHz pentium M, running debian sid / experimental. I set it up with all the RT tweaks (limits.conf, rtirq) and installed ardour2. I really never thought I could use the laptop for something related to audio ... I was wrong
First of, I can run jack reliably at low lat (I even tried something like -p16 -n3 -r 48000, where I started getting xruns, so increasing to p64 makes it happy). If I run intensive stuff, I quickly reach the limits but just ardour2 and a couple of tracks and the system is really reliable. This will be handy at times I need to fetch the RME cardbus for my Hammerfall system so I can use this laptop on some special occasions. I start to really like this kernel
First of, I can run jack reliably at low lat (I even tried something like -p16 -n3 -r 48000, where I started getting xruns, so increasing to p64 makes it happy). If I run intensive stuff, I quickly reach the limits but just ardour2 and a couple of tracks and the system is really reliable. This will be handy at times
I need to fetch the RME cardbus for my Hammerfall system so I can use this laptop on some special occasions. I start to really like this kernel -
studio32
Re: kernel 2.6.29 is out
welcomejuki wrote:Hi!
Yesterday i built the Debian kernel 2.6.29 that just entered in sid a few days ago patching it RT. I never had so good kernel, it's just excellent!
Did you see this? http://linuxmusicians.com/viewtopic.php?f=44&t=971
Maybe you could offer some help...-
juki
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Re: kernel 2.6.29 is out
Hello.studio32 wrote:welcomejuki wrote:Hi!
Yesterday i built the Debian kernel 2.6.29 that just entered in sid a few days ago patching it RT. I never had so good kernel, it's just excellent!
Did you see this? http://linuxmusicians.com/viewtopic.php?f=44&t=971
Unfortunately, i don't think i could help, 1/ my technical english is not so good, 2/ i'm able to build a kernel following an easy tutorial, nothing more. In a few years maybe.
But it seems interseting, i hope it'll work.
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studio32
Re: kernel 2.6.29 is out
You could say on the list, that you like to see an RT kernel in Debian and offer some testing....juki wrote: Hello.
Unfortunately, i don't think i could help, 1/ my technical english is not so good, 2/ i'm able to build a kernel following an easy tutorial, nothing more. In a few years maybe.
But it seems interseting, i hope it'll work.
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studio32
Re: kernel 2.6.29 is out
what is a normal processing load, DSP, with ardour?
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Re: kernel 2.6.29 is out
hard to say. I am experimenting with jack2 at the moment. I have about 1% DSP load with jackd, and ardour opened with an empty session (no tracks at all). When I close ardour, the DSP load falls back to 0.5%. So ardour alone without any stuff in it takes about 0.5 %.
Re: kernel 2.6.29 is out
p and c ? ... my guesstimate would be how much in % the playback and capture buffers are filled up ... maybe ?