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54 lines
2 KiB
Text
54 lines
2 KiB
Text
[
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{ type: install
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message: <<EOM
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Please make sure that you read %%PREFIX%%/share/doc/clockspeed/INSTALL.
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It contains important information about testing and configuring
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clockspeed, and finally installing it in your system.
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Clockspeed uses the libtai library, check /usr/ports/devel/libtai
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for more details. TAI time measure is off 22 seconds from UTC time
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measure. Therefore, your system time will show a 22 secs difference
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from your time source after you've installed this port.
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To fix this, you could follow this simple recipe created with
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PR ports/27617.
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1) killall clockspeed (you can't have it running)
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2) sntpclock IP.OF.NTP.SERVER | clockadd
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3) enable/start clockspeed :
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% cp %%PREFIX%%/etc/rc.d/clockspeed.sh.sample \
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%%PREFIX%%/etc/rc.d/clockspeed.sh
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# enable clockspeed to automagically start next
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# time you reboot. do this after testing everything
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% %%PREFIX%%/etc/rc.d/clockspeed.sh start
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# start clockspeed now
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4) sntpclock IP.OF.NTP.SERVER > %%PREFIX%%/etc/clockspeed/adjust
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5) cd /usr/src/share/zoneinfo
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6) make -DLEAPSECONDS clean all install ; make clean
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Step 5 and 6 build support in your system for leapseconds handling.
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Take a note about this since you might forget later to disable it
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if you remove this port. To disable it, simply re-do step 6 without
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-DLEAPSECONDS.
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Step 6 should not break anything but you can disable it anytime
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as per last paragraph if you think something unusual has happened
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to your system.
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7) /stand/sysinstall -> configure -> time zone (choose the correct
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time zone for your system)
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8) sntpclock IP.OF.NTP.SERVER | clockview
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Check how close is your clock before and after now. Should be
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within milliseconds.
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Do not forget to add a cron(8) job with step 4 to periodically
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adjust clockspeed's drift rate. Once a week should be more than
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adequate.
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A port to non-i386 platforms was done using the clock_gettime(2)
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function. Since this is somewhat experimental, there might be some
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tiny precision differences from the i386 platform versions. You
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have been warned!
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EOM
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}
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]
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