[docs] [issue14318] clarify "may not" in time.steady docs
report at bugs.python.org
Mon Mar 19 13:21:53 CET 2012
STINNER Victor <victor.stinner at gmail.com> added the comment:
> Does "may not" mean that the user isn't allowed to adjust it,
> or that they system won't always have adjusted it?
It depends on which clock is used.
- clock_gettime(CLOCK_MONOTONIC_RAW) cannot be adjusted
- clock_gettime(CLOCK_MONOTONIC) can be adjusted by NTP (only its speed, no forward or backward jump)
- I don't think that QueryPerformanceCounter() can be adjusted
- gettimeofday(), ftime() and time() are the system clock and can be changed manually by the system administrator or automatically by NTP (maybe with a jump, forward or backward)
- clock() is used on Windows if QueryPerformanceFrequency failed. I donk't know if it can be ajdusted
It is important to mention that time.steady() may be adjusted in some cases.
Python tracker <report at bugs.python.org>
More information about the docs