net: zperf: make TCP receiver buffer size configurable via Kconfig#3
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sayoojkkarun
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Jun 9, 2026
Problem description: The TCP receiver buffer in zperf_tcp_receiver.c was hard-coded to 1500 bytes due to this the speed is limited. Fix description: Introduce CONFIG_NET_ZPERF_TCP_RECEIVER_BUF_SIZE as a Kconfig int option (default 1500, range 256-65535) so users can config the buffer size based on the requirement. Tests Done: Increasing this value to 32768 has been observed to improve TCP receive throughput from ~80 Mbps to ~130 Mbps on Ethernet hardware. Signed-off-by: Surya Prakash T <suryat@aerlync.com>
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sayoojkkarun
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Jun 9, 2026
sayoojkkarun
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Jun 9, 2026
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Closing this PR got two appoval on Open source PR and issue resolved!! |
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Problem description:
The TCP receiver buffer in zperf_tcp_receiver.c was hard-coded to 1500 bytes
This limits throughput because only 1500 bytes are fixed size of buffer.
Fix description:
Add new CONFIG_NET_ZPERF_TCP_RECEIVER_BUF_SIZE as a Kconfig int option (default 1500, range 256-65535) so users can config the buffer size based on the requirement.
Tests Done:
Increasing this value to 32768 has been observed to improve TCP receive throughput from ~80 Mbps to ~130 Mbps on Ethernet hardware.