[ntp:questions] Optimising NTP build for Raspberry Pi 2
david-taylor at blueyonder.co.uk.invalid
Sat Mar 7 14:16:12 UTC 2015
On 07/03/2015 12:41, Neil Green wrote:
> In an attempt to squeeze all I can out of a NTP and GPS/PPS setup on the Raspberry Pi 2 I’m starting to experiment with compile flags using GCC 4.8. Currently I have:
> CC="gcc-4.8" CFLAGS="-mcpu=cortex-a7 -mfpu=neon-vfpv4" ./configure --enable-NMEA --enable-ATOM --enable-linuxcaps --disable-all-clocks --disable-parse-clocks --disable-ipv6
> Will attempting to optimise the build like this have any positive impact on NTP in terms of precision, stability etc, or am I focussing on an area that will have no benefit?
From my limited experience, improving stability etc. is best done by
tuning the NTP parameters, keeping the temperature as constant as
possible, and if you have a PPS source disabling the tickless mode in
If you are compiling a lot, "make -j5" speeds things up.
"--enable-linuxcaps" appear to be unnecessary, and I've not done any
comparisons by enabling or disabling different clocks, but anything to
reduce the ./configure time would be extremely welcome.
I would be most interested to hear of your results.
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