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- # Uncomment the next line to enable packet forwarding for IPv4
- net.ipv4.ip_forward=1
- # Uncomment the next line to enable packet forwarding for IPv6
- # Enabling this option disables Stateless Address Autoconfiguration
- # based on Router Advertisements for this host
- net.ipv6.conf.all.forwarding=1
- net.ipv4.conf.all.proxy_arp = 1
- net.core.netdev_max_backlog = 250000
- # Usually SIP uses TCP or UDP to carry the SIP signaling messages over the internet (<=> TCP/UDP sockets).
- # The receive buffer (socket receive buffer) holds the received data until it is read by the application.
- # The send buffer (socket transmit buffer) holds the data until it is read by the underling protocol in the network stack.
- #net.core.rmem_max = 10485760
- #net.core.rmem_max = 12582912
- #net.core.rmem_max = 33554432
- net.core.rmem_max = 67108864
- #net.core.wmem_max = 10485760
- #net.core.wmem_max = 12582912
- net.core.wmem_max = 33554432
- #net.core.rmem_default = 10485760
- net.core.rmem_default = 31457280
- #net.core.wmem_default = 10485760
- net.core.wmem_default = 31457280
- net.ipv4.tcp_rmem = 10240 87380 10485760
- net.ipv4.tcp_wmem= 10240 87380 10485760
- # Increase the write-buffer-space allocatable
- net.ipv4.udp_rmem_min = 131072
- net.ipv4.udp_wmem_min = 131072
- # net.ipv4.udp_mem = 65536 131072 262144
- net.ipv4.udp_mem = 19257652 19257652 19257652
- net.ipv4.tcp_mem = 786432 1048576 26777216
- # Increase the maximum amount of option memory buffers
- net.core.optmem_max = 25165824
- # Set the value of somaxconn. This is the Max value of the backlog. The default value is 128.
- # If the backlog is greater than somaxconn, it will truncated to it.
- net.core.somaxconn = 65535
- # The kernel parameter "netdev_max_backlog" is the maximum size of the receive queue.
- net.core.netdev_max_backlog = 300000
- # change the maximum number of open files
- # be sure that /proc/sys/fs/inode-max is 3-4 times the new value of
- # /proc/sys/fs/file-max, or you will run out of inodes.
- # The upper limit on fs.file-max is recorded in fs.nr_open (which is 1024*1024)
- fs.file-max = 500000
- # The value 0 makes the kernel swap only to avoid out of memory condition.
- # Do less swapping
- vm.swappiness = 10
- vm.dirty_ratio = 60
- vm.dirty_background_ratio = 2
- # The default operating system limits on mmap counts is likely to be too low
- # used by vmtouch
- vm.max_map_count=262144
- # the maximum size (in bytes) of a single shared segment that a Linux process can allocate in its virtual address space.
- # 1/2 of physical RAM, shared memory segment theoretically is 2^64bytes. This is correspond to all physical RAM that you have.
- kernel.shmmax = 1073741824
- # total port range
- net.ipv4.ip_local_port_range = 1024 65535
- # fast fast fast
- net.ipv4.tcp_fastopen = 3
- # bbr
- net.core.default_qdisc=fq
- net.ipv4.tcp_congestion_control=bbr
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