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ntp: shorten presend delay to 2 seconds

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This commit is contained in:
Miroslav Lichvar 2016-11-23 15:55:37 +01:00
parent 2408bbcd77
commit d23c647e34
3 changed files with 3 additions and 3 deletions
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2
doc/chrony.conf.adoc
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@ -200,7 +200,7 @@ presend 9
---- ----
+ +
when the polling interval is 512 seconds or more, an extra NTP client packet when the polling interval is 512 seconds or more, an extra NTP client packet
will be sent to the server a short time (4 seconds) before making the actual will be sent to the server a short time (2 seconds) before making the actual
measurement. measurement.
+ +
The *presend* option cannot be used in the *peer* directive. The *presend* option cannot be used in the *peer* directive.

2
ntp_core.c
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@ -223,7 +223,7 @@ static ARR_Instance broadcasts;
#define IBURST_TOTAL_SAMPLES SOURCE_REACH_BITS #define IBURST_TOTAL_SAMPLES SOURCE_REACH_BITS
/* Time to wait after sending packet to 'warm up' link */ /* Time to wait after sending packet to 'warm up' link */
#define WARM_UP_DELAY 4.0 #define WARM_UP_DELAY 2.0
/* Compatible NTP protocol versions */ /* Compatible NTP protocol versions */
#define NTP_MAX_COMPAT_VERSION NTP_VERSION #define NTP_MAX_COMPAT_VERSION NTP_VERSION

2
test/simulation/114-presend
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@ -3,7 +3,7 @@
. ./test.common . ./test.common
test_start "presend option" test_start "presend option"
min_sync_time=140 min_sync_time=136
max_sync_time=260 max_sync_time=260
client_server_options="presend 6 maxdelay 16" client_server_options="presend 6 maxdelay 16"
client_conf="maxdistance 10" client_conf="maxdistance 10"