11058Sbinkertn@umich.eduifconfig eth1 mtu 9000 txqueuelen 1000 up 21058Sbinkertn@umich.edu 31058Sbinkertn@umich.edu### IPV4 specific settings 41058Sbinkertn@umich.edu# turns TCP timestamp support off, default 1, reduces CPU use 51058Sbinkertn@umich.eduecho "0" > /proc/sys/net/ipv4/tcp_timestamps 61058Sbinkertn@umich.edu 71058Sbinkertn@umich.edu# turn SACK support off, default on 81058Sbinkertn@umich.eduecho "0" > /proc/sys/net/ipv4/tcp_sack 91058Sbinkertn@umich.edu 101058Sbinkertn@umich.edu# sets min/default/max TCP read buffer, default 4096 87380 174760 111058Sbinkertn@umich.eduecho "10000000 10000000 10000000" > /proc/sys/net/ipv4/tcp_rmem 121058Sbinkertn@umich.edu 131058Sbinkertn@umich.edu# sets min/pressure/max TCP write buffer, default 4096 16384 131072 141058Sbinkertn@umich.eduecho "10000000 10000000 10000000" > /proc/sys/net/ipv4/tcp_wmem 151058Sbinkertn@umich.edu 161058Sbinkertn@umich.edu# sets min/pressure/max TCP buffer space, default 31744 32256 32768 171058Sbinkertn@umich.eduecho "10000000 10000000 10000000" > /proc/sys/net/ipv4/tcp_mem 181058Sbinkertn@umich.edu 191058Sbinkertn@umich.edu### CORE settings (mostly for socket and UDP effect) 201058Sbinkertn@umich.edu# maximum receive socket buffer size, default 131071 211058Sbinkertn@umich.eduecho "524287" > /proc/sys/net/core/rmem_max 221058Sbinkertn@umich.edu 231058Sbinkertn@umich.edu# maximum send socket buffer size, default 131071 241058Sbinkertn@umich.eduecho "524287" > /proc/sys/net/core/wmem_max 251058Sbinkertn@umich.edu 261058Sbinkertn@umich.edu# default receive socket buffer size, default 65535 271058Sbinkertn@umich.eduecho "524287" > /proc/sys/net/core/rmem_default 281058Sbinkertn@umich.edu 291058Sbinkertn@umich.edu# default send socket buffer size, default 65535 301058Sbinkertn@umich.eduecho "524287" > /proc/sys/net/core/wmem_default 311058Sbinkertn@umich.edu 321058Sbinkertn@umich.edu# maximum amount of option memory buffers, default 10240 331058Sbinkertn@umich.eduecho "524287" > /proc/sys/net/core/optmem_max 341058Sbinkertn@umich.edu 351058Sbinkertn@umich.edu# number of unprocessed input packets before kernel starts dropping them, 361058Sbinkertn@umich.edu# default 300 371058Sbinkertn@umich.eduecho "300000" > /proc/sys/net/core/netdev_max_backlog 38