RealTime
From ZENotes
Do this in Linux DC266 2.6.28-3-rt #12-Ubuntu SMP PREEMPT [] x86_64 GNU/Linux:
noise@DC266:~/Public$ ./cyclictest -p 20 -t 5 -n -D 60
Get this:
policy: fifo: loadavg: 2.57 2.48 1.60 3/258 9442 T: 0 ( 8960) P:20 I:1000 C: 59000 Min: 2 Act: 2 Avg: 2 Max: 12 T: 1 ( 8961) P:19 I:1500 C: 39306 Min: 2 Act: 3 Avg: 2 Max: 11 T: 2 ( 8962) P:18 I:2000 C: 29495 Min: 2 Act: 2 Avg: 2 Max: 13 T: 3 ( 8963) P:17 I:2500 C: 23592 Min: 2 Act: 3 Avg: 2 Max: 12 T: 4 ( 8964) P:16 I:3000 C: 19656 Min: 2 Act: 2 Avg: 2 Max: 13
on the rt kernel of ustudio in 64bit
Do this in Linux DC266 2.6.30-homebrew #3 SMP PREEMPT [] i686 Intel(R) Core(TM)2 Duo CPU E6750 @ 2.66GHz GenuineIntel GNU/Linux:
<(^_^)> rt-test sudo ./cyclictest -p 20 -t 5 -n -D 60
Get this:
policy: fifo: loadavg: 1.94 0.79 0.34 3/146 3709 T: 0 ( 3705) P:20 I:1000 C: 58975 Min: 1 Act: 2 Avg: 2 Max: 57 T: 1 ( 3706) P:19 I:1500 C: 39333 Min: 2 Act: 2 Avg: 2 Max: 9 T: 2 ( 3707) P:18 I:2000 C: 29487 Min: 2 Act: 2 Avg: 2 Max: 7 T: 3 ( 3708) P:17 I:2500 C: 23575 Min: 1 Act: 2 Avg: 2 Max: 42 T: 4 ( 3709) P:16 I:3000 C: 19658 Min: 1 Act: 2 Avg: 2 Max: 5
on the homebrew 2.6.30 I did a few weeks ago
refs/links:
- http://paulsundvall.blogspot.com/2008/11/compile-realtime-kernel-in-debian-lenny.html
- http://rt.wiki.kernel.org/index.php/Main_Page
- http://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO
- http://rt.wiki.kernel.org/index.php/Ketchup
- http://paulsundvall.blogspot.com/2008/11/kompilera-cyclictest.html
- http://alien.slackbook.org/dokuwiki/doku.php?id=linux:kernelbuilding
- http://alien.slackbook.org/blog/calculating-pi/