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sysctl.d: request ECN on both in and outgoing connections (#9143)

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To further avoid bufferbloat Explicit Congestion Notification (ECN)
should be enabled for both in and outgoing connections. The kernel
default is to enable it when requested for incoming connections, but
not to request it on outgoing connections. This patch enables it for
both.

A long time ago enabling these was causing problems, but these issues
have since been dealt with.

Fixes #9087.
This commit is contained in:
Thomas H. P. Andersen 2018-05-31 13:30:10 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent aafcd2523b
commit 6f130e85c7
1 changed files with 3 additions and 0 deletions
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sysctl.d/50-default.conf
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@ -33,6 +33,9 @@ net.ipv4.conf.all.promote_secondaries = 1
# Fair Queue CoDel packet scheduler to fight bufferbloat
net.core.default_qdisc = fq_codel
# Request Explicit Congestion Notification (ECN) on both in and outgoing connections
net.ipv4.tcp_ecn = 1
# Enable hard and soft link protection
fs.protected_hardlinks = 1
fs.protected_symlinks = 1