22 Aug
2008
22 Aug
'08
2:24 p.m.
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Rui Nuno Capela wrote:
Tim Goetze wrote:
hehe , nice try. We won't let you go that easily ;)
[Tim Goetze]
ah, it seems i'm not alone. [victor]
Update: on my laptop, the patched 2.6.26.3 kernel boots into an
endless list of tracebacks on the console. On the main box, USB MIDI
input is only read as soon as a key is pressed on the USB keyboard
(the one with the letters, not the MIDI one ...). USB MIDI out is
broken, too. So it's back to the old version.
I was told to revert to 2.6.24.17 (not possible
in my specific
case, but there you go), in this list. Or to join the tuner's list.
http://www.kernel.org/pub/linux/kernel/projects/rt/patch-2.6.26.3-rt2.bz2
worked for me. Applied cleanly and compiled well after turning off
some RCU-related preemption options that caused compilation errors,
but I was in no mood to find out the exact how and why. So far, it
has collected a few hours of solid uptime too, but I haven't done any
latency measuring. i'm currently recovering myself from schock after
returning from
vacation and while trying 2.6.26.x-rt for the rentr�e it all seemed to
work fine except omg... midi timing is a wreck, specially wrt.alsa
sequencer. event delivery is completely fubar. i mean, completely. true
showstopper, whatever :(
cacophony seems to be the right word to express what it is.
however, didn't had the time to check whether NOHZ is at stake. i'm
certainly going back to 2.6.25.x-rt where things are still sane and
pleasant for a while.
btw, having NOHZ=y (aka tickless kernel) has been the norm here, since
its inception
CONFIG_NO_HZ=y - same norm here; with good results iff it works.
I'll forward this email to LAT. MIDI with 2.6.26 MIDI has not been
mentioned there.
Since there's more of you LAD's compiling your own kernel that does not
work, what about posting .config, version/patchset and compiler info
before we all run into the same walls. - We're planning something like
this with http://wiki.linuxaudio.org/wiki/kernel/
Does anyone know of similar projects? How in your opinion can LAO best
supplement [rt] kernel bug tracking?
There's 2.6.26-rtX testing packages from various distributions eg:
http://linux.ilmainen.net/musix/temp/ or at
http://guests.goto10.org/~krgn/files/ more at LAT - none of which is
stable at the moment.
robin
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