From: Eric Wong <normalperson@...>
Date: 2014-09-11T08:09:57+00:00
Subject: [ruby-core:64960] Re: [ruby-trunk - Bug #10202] TestBenchmark#test_realtime_output breaks on ARM

Thanks for the confirmation! r47526 removes CLOCK_MONOTONIC_RAW.

r47526 | normal | 2014-09-11 08:09:07 +0000 (Thu, 11 Sep 2014) | 14 lines

lib/benchmark.rb: remove CLOCK_MONOTONIC_RAW support

In addition to being unaffected by _offset_ correction,
CLOCK_MONOTONIC_RAW is also unaffected by _frequency_ correction,
making it unsuitable for measuring real time on systems where the
clock is always running too fast or slow.

CLOCK_MONOTONIC (without _RAW) is the correct clock, as it is unaffected
by _offset_ correction (due to human error or battery replacement), but
still takes _frequency_ correction into account for clocks which
consistently run too fast or slow.

Thanks to V��t Ondruch for reporting the issue on ARM [Bug #10202]