[arch-proaudio] cyclictest

[Ralf Mardorf]

Hi,

I wonder what results you get, if you run cyclictest on your machine,
what ever kernel you are using. I've done this for 4.14.6-rt7 from
https://aur.archlinux.org/pkgbase/linux-rt [1] and for 4.14.6-rt7 less
patched, using a different config [2].

Regards,
Ralf

[1]
[rocketmouse at archlinux ~]$ cat /var/log/rtest/rtest-20171221_195747.log 
sudo hwinfo --cpu | grep -m1 Model
  Model: 6.60.3 "Intel(R) Celeron(R) CPU G1840 @ 2.80GHz"
uname -a
Linux archlinux 4.14.6-rt7-1-rt #1 SMP PREEMPT RT Wed Dec 20 22:37:18 CET 2017 x86_64 GNU/Linux
cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance
performance



[2017-12-21 19:57]
cyclictest -S -m -p98
WARN: open /dev/cpu_dma_latency: Permission denied
policy: fifo: loadavg: 0.13 0.09 0.02 1/208 4690          

T: 0 ( 1245) P:98 I:1000 C:35539474 Min:      1 Act:   31 Avg:   27 Max:      76
T: 1 ( 1246) P:98 I:1500 C:23692982 Min:      1 Act:   31 Avg:   28 Max:      83
[2017-12-22 05:50]

[2]
[rocketmouse at archlinux ~]$ cat /var/log/rtest/rtest-20171221_085832.log 
sudo hwinfo --cpu | grep -m1 Model
  Model: 6.60.3 "Intel(R) Celeron(R) CPU G1840 @ 2.80GHz"
uname -a
Linux archlinux 4.14.6-rt7-1-rt-pussytoes #1 SMP PREEMPT RT Tue Dec 19 05:51:37 CET 2017 x86_64 GNU/Linux
cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance
performance



[2017-12-21 08:58]
cyclictest -S -m -p98
WARN: open /dev/cpu_dma_latency: Permission denied
policy: fifo: loadavg: 0.36 0.26 0.11 1/217 30782          

T: 0 (30748) P:98 I:1000 C:5147453 Min:      1 Act:   40 Avg:   28 Max:      68
T: 1 (30749) P:98 I:1500 C:3431635 Min:      1 Act:   32 Avg:   31 Max:      61
[2017-12-21 10:24]

-- 
$ pacman -Q linux{,-rt{,-cornflower,-pussytoes}}|awk '{print $2}'
4.14.7-1
4.14.6_rt7-1
4.11.12_rt16-1
4.14.6_rt7-1