# "Performance Scalability of a Multi-Core Web Server", Nov 2007 | |
# Bryan Veal and Annie Foong, Intel Corporation, Page 4/10 | |
fs.file-max = 5000000 | |
net.core.netdev_max_backlog = 4096 | |
net.core.optmem_max = 10000000 | |
net.core.rmem_default = 10000000 | |
net.core.rmem_max = 10000000 | |
net.core.somaxconn = 4096 | |
net.core.wmem_default = 10000000 | |
net.core.wmem_max = 10000000 | |
net.ipv4.conf.all.rp_filter = 1 | |
net.ipv4.conf.default.rp_filter = 1 | |
net.ipv4.ip_local_port_range = 1024 65535 | |
net.ipv4.tcp_congestion_control = bic | |
net.ipv4.tcp_ecn = 0 | |
net.ipv4.tcp_max_syn_backlog = 12000 | |
net.ipv4.tcp_max_tw_buckets = 2000000 | |
net.ipv4.tcp_mem = 30000000 30000000 30000000 | |
net.ipv4.tcp_rmem = 30000000 30000000 30000000 | |
net.ipv4.tcp_sack = 1 | |
net.ipv4.tcp_syncookies = 0 | |
net.ipv4.tcp_timestamps = 1 | |
net.ipv4.tcp_wmem = 30000000 30000000 30000000 | |
# optionally, avoid TIME_WAIT states on localhost no-HTTP Keep-Alive tests: | |
# "error: connect() failed: Cannot assign requested address (99)" | |
# On Linux, the 2MSL time is hardcoded to 60 seconds in /include/net/tcp.h: | |
# #define TCP_TIMEWAIT_LEN (60*HZ) | |
# The option below is safe to use: | |
net.ipv4.tcp_tw_reuse = 1 | |
# The option below lets you reduce TIME_WAITs further | |
# but this option is for benchmarks, NOT for production (NAT issues) | |
net.ipv4.tcp_tw_recycle = 1 | |
# from: http://gwan.com/en_apachebench_httperf.html |
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