starlingx
/
config-files
Code Issues Proposed changes

Decrease tcp retransmission timeout to ~100 secs 

This commit decreases the net.ipv4.tcp_retries2 to 8, which results in
a timeout of ~100 seconds down from the default of 15, with results in
a timeout of ~15 minutes.
This should result in dead connections being detected faster,
in ~100 seconds, rather than ~15 minutes, which is important when the
floating controller ip moves during a swact.

Closes-bug: 1847607
Change-Id: I48c3d396bdcd81ab11d307fd62de36deffc99f12
Signed-off-by: Joseph Richard <joseph.richard@windriver.com>
This commit is contained in:
Joseph Richard 2019-10-25 14:19:41 -04:00
parent 66d88788a8
commit 50b7827b7d
1 changed files with 6 additions and 0 deletions
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6
initscripts-config/files/sysctl.conf
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@ -80,3 +80,9 @@ net.ipv4.tcp_keepalive_intvl = 1
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_time = 5
# This controls the tcp connection retries.
# The default results in a delay of ~15 minutes before dead connections
# to the floating ip are detected after a swact.
# Reduce this delay to 8 shortens this to ~100 seconds.
net.ipv4.tcp_retries2 = 8