1zttest(8)                   System Manager's Manual                  zttest(8)
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NAME

6       zttest — Test if the zaptel timer provides timely response
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SYNOPSIS

9       zttest [ -v ]
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DESCRIPTION

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

26       -v
27              Be more verbose: print one line per test.
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FILES

31       /dev/zap/pseudo
32       The device file used to access the zaptel timer.
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SEE ALSO

36       zttool(8), ztmonitor(8), ztspeed(8), ztcfg(8), asterisk(8).  gettimeof‐
37       day(2)
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AUTHOR

41       This  manual  page  was  written  by  Tzafrir Cohen <tzafrir.cohen@xor‐
42       com.com> Permission is granted to copy, distribute and/or  modify  this
43       document  under  the terms of the GNU General Public License, Version 2
44       any later version published by the Free Software Foundation.
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46       On Debian systems, the complete text of the GNU General Public  License
47       can be found in /usr/share/common-licenses/GPL.
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51                                  2005-06-25                         zttest(8)