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dahdi_test — Test if the DAHDI timer provides timely response

dahdi_test(8) System Manager's Manual dahdi_test(8)


dahdi_test — Test if the DAHDI timer provides timely response


dahdi_test [ -v ]


dahdi_test dahdi_test runs a timing test in a loop and prints the result of each loop. The test is as follows:
It reads 8192 bytes from the DAHDI timer device ( /dev/dahdi/pseudo). This should take exactly 8000 ms . It uses calls to gettimeofday(2) before and after that read to check that indeed exactly 8000ms have passed.
Values of 100% and 99.99% Are normally considered a definite pass. Values of 99.98% and 99.97% are probably OK as well.


Be more verbose: print one line per test.
-c count
Run for count times instead of running forever.


The device file used to access the DAHDI timer.


dahdi_tool(8), dahdi_cfg(8), asterisk(8). gettimeofday(2)


This manual page was written by Tzafrir Cohen <> Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation.
2005-06-25 Debian Sid