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# /etc/security/limits.conf |
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* soft nofile 999999 |
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* hard nofile 999999 |
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root soft nofile 999999 |
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root hard nofile 999999 |
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=========================================================== |
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# /etc/sysctl.conf |
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# sysctl for maximum tuning |
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# https://klaver.it/linux/sysctl.conf |
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# http://www.kegel.com/c10k.html |
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# http://www.metabrew.com/article/a-million-user-comet-application-with-mochiweb-part-1/ |
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# https://gist.github.com/243632 - vmsappiness |
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# http://blog.urbanairship.com/blog/2010/09/29/linux-kernel-tuning-for-c500k/ |
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# https://groups.google.com/forum/#!topic/nodejs/0Z34PH_R88o/discussion |
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# http://serverfault.com/questions/10852/what-limits-the-maximum-number-of-connections-on-a-linux-server |
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# http://fasterdata.es.net/fasterdata/host-tuning/linux/ |
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# http://ubuntuforums.org/showthread.php?t=1198281 |
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# Increase size of file handles and inode cache |
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fs.file-max = 999999 |
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# Allowed local port range |
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net.ipv4.ip_local_port_range = 1024 65535 |
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### |
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### TUNING NETWORK PERFORMANCE ### |
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### |
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# Do a 'modprobe tcp_cubic' first |
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net.ipv4.tcp_congestion_control = cubic |
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# Turn on the tcp_window_scaling |
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net.ipv4.tcp_window_scaling = 1 |
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# Increase the maximum total buffer-space allocatable |
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# This is measured in units of pages (4096 bytes) |
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net.ipv4.tcp_mem = 65536 131072 262144 |
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net.ipv4.udp_mem = 65536 131072 262144 |
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# Increase the read-buffer space allocatable |
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net.ipv4.tcp_rmem = 8192 87380 16777216 |
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net.ipv4.udp_rmem_min = 16384 |
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net.core.rmem_default = 87380 |
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net.core.rmem_max = 16777216 |
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# Increase the write-buffer-space allocatable |
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net.ipv4.tcp_wmem = 8192 65536 16777216 |
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net.ipv4.udp_wmem_min = 16384 |
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net.core.wmem_default = 65536 |
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net.core.wmem_max = 16777216 |
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############################# |
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# General gigabit tuning: |
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#net.core.rmem_max = 16777216 |
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#net.core.wmem_max = 16777216 |
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#net.ipv4.tcp_rmem = 4096 87380 16777216 |
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#net.ipv4.tcp_wmem = 4096 65536 16777216 |
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#setting this to 1 -> possible SYN flooding on port 8080. Sending cookies. |
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net.ipv4.tcp_syncookies = 0 |
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# this gives the kernel more memory for tcp |
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# which you need with many (100k+) open socket connections |
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net.ipv4.tcp_mem = 50576 64768 98152 |
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net.core.netdev_max_backlog = 30000 |
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# I was also masquerading the port comet was on, you might not need this |
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# net.ipv4.netfilter.ip_conntrack_max = 1048576 |
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############################### |
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# |
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net.ipv4.tcp_max_tw_buckets = 360000 |
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net.core.netdev_max_backlog = 2500 |
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vm.min_free_kbytes = 65536 |
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vm.swappiness = 0 |
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net.ipv4.tcp_tw_recycle = 0 |
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net.ipv4.tcp_tw_reuse = 0 |
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net.ipv4.tcp_orphan_retries = 1 |
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net.ipv4.tcp_fin_timeout = 25 |
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#raise this high |
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net.ipv4.tcp_max_orphans = 819200 |
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# http://simonhf.wordpress.com/2010/10/01/node-js-versus-sxe-hello-world-complexity-speed-and-memory-usage/ |
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net.core.somaxconn = 65535 |
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net.ipv4.tcp_no_metrics_save = 1 |
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net.ipv4.tcp_max_syn_backlog = 20480 |
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jedi4ever created this gist