Merge pull request #11658 from omacom/tcp-bbr-fq

Switch TCP congestion control to BBR with fq pacing

etc/sysctl.d/99-omarchy-sysctl.conf

@@ -1,6 +1,12 @@
 # Solve common flakiness with SSH (MTU discovery on flaky links).
 net.ipv4.tcp_mtu_probing=1
 
+# BBR estimates bottleneck bandwidth and minimum RTT and paces to them, where
+# cubic keeps pushing until packets drop. That cuts queueing latency
+# (bufferbloat) on fast links. fq is the qdisc BBR is built to pace through.
+net.core.default_qdisc=fq
+net.ipv4.tcp_congestion_control=bbr
+
 # Tune reclaim for swap on zram, which is orders of magnitude faster than the
 # disk swapfile these defaults assume.