Dahdi dummy

It looks like John David has renamed dummy to hrtimer, dummy is designed to provide good timing on systems lacking dahdi hardware. I've attached strings of his module and the dummy one I built today, they are virtually identical.

Please test this if you have asl1.01 on a rpi.

Simply building this seems to fix any studering on asl 1.01 running on a RPi3:

bryan@StPeteRpt:~ $ sudo dahdi_test [sudo] password for bryan: Opened pseudo dahdi interface, measuring accuracy... 99.614% 99.594% 99.608% 99.608% 98.476% 99.638% 99.599% 99.601% 99.600% 98.450% 99.602% 99.600% 99.601% 99.600% 98.445% 99.581% 99.621% 99.605% 99.597% 98.478% 99.630% 99.579% 99.626% 99.601% 98.478% 99.630% 99.602% 99.600% 99.601% 98.446% 99.601% 99.580% ^C --- Results after 32 passes --- Best: 99.638% -- Worst: 98.445% -- Average: 99.390271% Cumulative Accuracy (not per pass): 99.967

After insmod of dummy module.

bryan@StPeteRpt:~ $ sudo dahdi_test Opened pseudo dahdi interface, measuring accuracy... 99.990% 99.967% 99.991% 99.992% 99.991% 99.992% 99.991% 99.991% 99.991% 99.988% 99.992% 99.991% 99.991% 99.992% 99.991% 99.991% 99.991% 99.990% 99.992% 99.991% 99.991% 99.991% 99.991% 99.991% 99.992% 99.991% 99.991% 99.992% 99.991% 99.991% 99.991% 99.991% 99.991% 99.990% 99.991% 99.992% 99.991% 99.991% 99.991% 99.991% ^C --- Results after 40 passes --- Best: 99.992% -- Worst: 99.967% -- Average: 99.990443% Cumulative Accuracy (not per pass): 99.990

Here it is on an intel server running a pci_radio card:

root@Itchy:/home/bryan# dahdi_test Opened pseudo dahdi interface, measuring accuracy... 99.993% 99.986% 99.995% 99.992% 99.984% 99.971% 99.993% 99.990% 99.992% 99.992% 99.991% 99.990% 99.996% 99.990% 99.971% 99.954% 99.994% 99.992% 99.991% 99.995% 99.983% 99.993% 99.992% 99.992% 99.997% 99.990% 99.985% 99.995% 99.990% 99.996% 99.989% 99.993% 99.993% 99.989% 99.997% 99.989% 99.994% 99.996% 99.988% 99.993% ^C --- Results after 40 passes --- Best: 99.997% -- Worst: 99.954% -- Average: 99.989596% Cummulative Accuracy (not per pass): 99.992

It's identical.

To build as root:

1. cd /usr/src/asl-dahdi-linux-2.11.1/linux
2. export MODULES_EXTRA='dahdi_dummy'
3. make
4. insmod /usr/src/asl-dahdi-linux-2.11.1/linux/drivers/dahdi/dahdi_dummy.ko

1. lsmod |grep dahdi

dahdi_dummy 3432 0 dahdi 229561 35 dahdi_dummy crc_ccitt 1771 1 dahdi

you will need to do dahdi_genconf and then dahdi_cfg. ASL1.01 is missing this in the service script that starts asterisk. It needs to be added. Restart asterisk

1. service asterisk restart

1. dahdi_scan

[1] active=yes alarms=UNCONFIGURED description=DAHDI_DUMMY/1 (source: HRtimer) 1 name=DAHDI_DUMMY/1 manufacturer= devicetype=DAHDI Dummy Timing location= basechan=1 totchans=0 irq=0

I'm not on the admin list, so unicast if you have a question.