Hechao Li created KAFKA-16496:
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Summary: Make the default of receive.buffer.bytes -1 instead of 5
Key: KAFKA-16496
URL: https://issues.apache.org/jira/browse/KAFKA-16496
Project: Kafka
Issue Type: Improvement
Reporter: Hechao Li
Currently, kafka has a default config receive.buffer.bytes=64k, which
translates to SO_RCVBUF = 65536. As a result, the Linux kernel can't auto tune
the receive window. This will cripple performance in many scenarios, especially
for internet traffic.
In our environment, we have seen a timeout after [a kernel
patch|https://lore.kernel.org/netdev/[email protected]/T/]
that makes the initial receive window 25% instead of 50% of SO_RCVBUF,
together with the default request.timeout.ms=30000, it causes an
application-level timeout.
See also https://lore.kernel.org/all/[email protected]/
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