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Increase net.core.rmem_max to 4 MB

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This was introduced 8 years ago. Newer OSs have 4194304 as default.
Confluent shouldn't decrease the default.

RHEL 8           212992
RHEL 9          2097152
RHEL 10         2097152
Fedora 44       4194304

Ubuntu 24.04     212992
Ubuntu 26.06    4194304

SLES 15          212992
SLES 16          212992

It was changed to 4MB in upstream kernel, too:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a6d4f25888b83b8300aef28d9ee22765c1cc9b34
This commit is contained in:
Markus Hilger
2026-07-15 03:26:02 +02:00
parent 07df9a8c94
commit fb41537555
1 changed files with 1 additions and 1 deletions
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confluent_server/sysctl/confluent.conf
+1 -1
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@@ -1,2 +1,2 @@
# Increase available receive buffers for discovery scans
net.core.rmem_max = 2097152
net.core.rmem_max = 4194304