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smooth: add option to smooth out only leap seconds

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The leaponly option can be used to enable a mode where only leap seconds
are smoothed out and normal offset/frequency changes are ignored. This
is useful to make the interval in which a leap second is smoothed out
constant and allow an NTP client to use multiple leap smearing servers
safely.
This commit is contained in:
Miroslav Lichvar
2015-06-02 13:24:04 +02:00
parent 31669f343a
commit 0abdc2a350
6 changed files with 61 additions and 20 deletions
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26
test/simulation/113-leapsecond
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@@ -27,18 +27,20 @@ for leapmode in system step slew; do
check_sync || test_fail
done
server_conf="refclock SHM 0 dpoll 10 poll 10
leapsectz right/UTC
leapsecmode slew
smoothtime 400 0.001"
client_conf="leapsecmode system"
min_sync_time=230000
max_sync_time=240000
for smoothmode in "" "leaponly"; do
server_conf="refclock SHM 0 dpoll 10 poll 10
leapsectz right/UTC
leapsecmode slew
smoothtime 400 0.001 $smoothmode"
client_conf="leapsecmode system"
min_sync_time=230000
max_sync_time=240000
run_test || test_fail
check_chronyd_exit || test_fail
check_source_selection || test_fail
check_packet_interval || test_fail
check_sync || test_fail
run_test || test_fail
check_chronyd_exit || test_fail
check_source_selection || test_fail
check_packet_interval || test_fail
check_sync || test_fail
done
test_pass