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In Linux, one can specify the system's default receive buffer size for network packets, say UDP, using the following command:

$ sysctl -w net.core.rmem_max=<value>

Can we use setsockoption() to handle socket? We have tried multiple times but this option is not giving the more than rmem_max max value which were already set in OS.

Ravi Mishra
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    rmem_default/rmem_max: if need be, increase the value of rmem_max. https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Performance_Tuning_Guide/s-network-dont-adjust-defaults.html – Klas Lindbäck Dec 14 '16 at 12:41
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    Looks like its not possible , http://stackoverflow.com/a/2090902/4490542 – e.jahandar Dec 14 '16 at 14:33
  • @unwind: We have gone through the redhat documentation and not able to set receive buffer ore than rmem_max max value which were already set in OS. – Ravi Mishra Dec 15 '16 at 07:18
  • Possible duplicate of [Specifying UDP receive buffer size at runtime in Linux](https://stackoverflow.com/questions/2090850/specifying-udp-receive-buffer-size-at-runtime-in-linux) – Armali Oct 10 '18 at 07:55

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