DWS/chrony
1
0
Fork 0
mirror of https://gitlab.com/chrony/chrony.git synced 2025-12-06 08:05:06 -05:00
Code Issues Packages Projects Releases Wiki Activity

ntp: add maxdelayquant option

Browse Source 
Add a new test for maximum delay using a long-term estimate of a
p-quantile of the peer delay. If enabled, it replaces the
maxdelaydevratio test. It's main advantage is that it is not sensitive
to outliers corrupting the minimum delay.

As it can take a large number of samples for the estimate to reach the
expected value and adapt to a new value after a network change, the
option is recommended only for local networks with very short polling
intervals.
This commit is contained in:
Miroslav Lichvar
2022-07-21 15:16:47 +02:00
parent 851c823b42
commit 070b4f69d0
12 changed files with 94 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
test/simulation/118-maxdelay
View File

@@ -25,4 +25,18 @@ for client_server_options in "maxpoll 6 maxdelay 2e-5"; do
check_sync && test_fail
done
min_sync_time=10
client_conf="
logdir tmp
log rawmeasurements"
client_server_options="minpoll 2 maxpoll 2 maxdelayquant 0.1"
run_test || test_fail
check_chronyd_exit || test_fail
check_packet_interval || test_fail
check_sync || test_fail
check_file_messages "20.*123\.1.* 111 111 1111" 200 500 measurements.log || test_fail
check_file_messages "20.*123\.1.* 111 111 1101" 2000 2300 measurements.log || test_fail
test_pass