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| author | Haru <haru@dotalux.com> | 2013-10-11 05:07:45 +0200 |
|---|---|---|
| committer | Haru <haru@dotalux.com> | 2013-10-26 12:46:46 +0200 |
| commit | 44c33fda3614d588e6bf6cee1cf884e98f1531f0 (patch) | |
| tree | b617c00c97675668f3c3a8a44b4c966e39ed520c /configure.in | |
| parent | d39918017d4416add066fb78ab7f23cb4436c614 (diff) | |
| download | hercules-44c33fda3614d588e6bf6cee1cf884e98f1531f0.tar.gz hercules-44c33fda3614d588e6bf6cee1cf884e98f1531f0.tar.bz2 hercules-44c33fda3614d588e6bf6cee1cf884e98f1531f0.tar.xz hercules-44c33fda3614d588e6bf6cee1cf884e98f1531f0.zip | |
Changed 'tick' variables to 64 bit
- This fixes an issue with timers that stop working after about 24-49
days when the tick overflows (note that this may happen much earlier
than that, and at hard to predict times, on some systems)
- Updated the RDTSC help message in the configure script to also warn
users about issues with SpeedStep enabled systems.
- On Windows, tick() still has a resolution of 10~15ms (or even as low
as 100ms on some systems). A TODO comment (thanks, Ai4rei) was added
for a follow-up patch, as I want this one to be as small as possible)
- Note: on Windows versions earlier than 6.x (Vista, Server 2008), the
tick overflow issue is NOT fixed, since they don't support the
function used to retrieve a 64 bit tick. This isn't a big issue, since
those platforms are already - or going soon to be - out of their
extended support period, and it's already advisable to upgrade, for
other reasons. If you're the unfortunate user of such a system, it is
recommended that you reboot your machine at least once every 49 days
for Hercules to work reliably.
- Note: To clear some doubts, since I've already been asked, this has
absolutely NOTHING to do with 32/64 bit CPUs or OSes. It's all about
a variable's size, not the size of registers of your CPU, and your
32bit CPU will be able to handle this just fine.
Signed-off-by: Haru <haru@dotalux.com>
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/configure.in b/configure.in index bd80bd43f..b79e51f6d 100644 --- a/configure.in +++ b/configure.in @@ -112,8 +112,12 @@ AC_ARG_ENABLE( Note: Please ensure that you've disabled dynamic CPU-Frequencys, such as power saving options. - (On the most modern Dedicated Servers cpufreq is preconfigured, see your distribution's manual - how to disable it) + (On most modern Dedicated Servers cpufreq is preconfigured, see your distribution's + manual how to disable it). + Furthermore, If your CPU has built-in CPU-Frequency scaling features (such as Intel's + SpeedStep(R)), do not enable this option. Recent CPUs (Intel Core or newer) guarantee + a fixed increment rate for their TSC, so it should be safe to use, but please doublecheck + the documentation of both your CPU and OS before enabling this option. ] ), [ |