IBM Power
Enable TCP_NODELAY
Melting
2011. 11. 16. 13:35
> ifconfig en0 tcp_nodelay 1
> At low packet rates, this is expected to help response times, but may impact TCP streaming workload throughput. Use chdev on the interface to have the setting stick across reboots. Curt data showed at least one instance of a kread() system call over a socket taking ~200 msec which would indicate a potential issue with Nagle
> 운영환경이 아니라, BMT와 같이 performace가 중요한 환경에서만 권장
> At low packet rates, this is expected to help response times, but may impact TCP streaming workload throughput. Use chdev on the interface to have the setting stick across reboots. Curt data showed at least one instance of a kread() system call over a socket taking ~200 msec which would indicate a potential issue with Nagle
> 운영환경이 아니라, BMT와 같이 performace가 중요한 환경에서만 권장