man zttest (Administration système) - Test if the zaptel timer provides timely response
NAME
zttest - Test if the zaptel timer provides timely response
SYNOPSIS
zttest [ -v ]
DESCRIPTION
zttest zttest 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 zaptel timer device (/dev/zap/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.
OPTIONS
-v Be more verbose: print one line per test.
FILES
/dev/zap/pseudo The device file used to access the zaptel timer.
SEE ALSO
AUTHOR
This manual page was written by Tzafrir Cohen <tzafrir.cohen@xorcom.com> 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. On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.