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Align HA sysctl values with load-test server config #8939

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Merged
agarciamontoro merged 2 commits into from
May 7, 2026
+9 −7
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Align HA sysctl values with load-test server config #8939

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Align HA sysctl values with load-test server config
agarciamontoro May 6, 2026
71f3004
Merge branch 'master' into fix.sysctl.values
agarciamontoro May 7, 2026
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16 changes: 9 additions & 7 deletions source/administration-guide/scale/high-availability-cluster-based-deployment.rst
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Expand Up @@ -136,13 +136,15 @@ Configuration settings

# TCP buffer sizes are tuned for 10Gbit/s bandwidth and 0.5ms RTT (as measured intra EC2 cluster).
# This gives a BDP (bandwidth-delay-product) of 625000 bytes.
net.ipv4.tcp_rmem = 4096 156250 625000
net.ipv4.tcp_wmem = 4096 156250 625000
net.core.rmem_max = 312500
net.core.wmem_max = 312500
net.core.rmem_default = 312500
net.core.wmem_default = 312500
net.ipv4.tcp_mem = 1638400 1638400 1638400
# The maximum socket buffer size for kernel autotuning is set to be 4x the BDP (2500000).
# The default socket buffer size is set to 1/4 BDP (156250).
net.ipv4.tcp_rmem = 4096 156250 2500000
net.ipv4.tcp_wmem = 4096 156250 2500000

# Bumping the theoretical maximum buffer size of receiving/sending sockets,
# either UDP, or TCP not using autotuning (i.e. using SO_RCVBUF)
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216

You can do the same for the proxy server.

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