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Name	Size	Permission	Action
99-sysctl.conf	2.54 KB	-rw-r--r--

Code Editor : 99-sysctl.conf

# sysctl settings are defined through files in
# /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
#
# Vendors settings live in /usr/lib/sysctl.d/.
# To override a whole file, create a new file with the same in
# /etc/sysctl.d/ and put new settings there. To override
# only specific settings, add a file with a lexically later
# name in /etc/sysctl.d/ and put new settings there.
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
### KERNEL TUNING ###
## Increase size of file handles and inode cache
fs.file-max = 2097152
fs.inotify.max_user_watches = 262144
## Do less swapping
#vm.swappiness = 10
vm.dirty_ratio = 60
vm.dirty_background_ratio = 2
## Sets the time before the kernel considers migrating a proccess to another core
kernel.sched_migration_cost_ns = 5000000
             ## GENERAL NETWORK SECURITY OPTIONS ###
## Number of times SYNACKs for passive TCP connection.
net.ipv4.tcp_synack_retries = 2
# Allowed local port range
net.ipv4.ip_local_port_range = 2000 65535
## Protect Against TCP Time-Wait
net.ipv4.tcp_rfc1337 = 1
## Control Syn Cookies
net.ipv4.tcp_syncookies = 1
## Decrease the time default value for tcp_fin_timeout connection
net.ipv4.tcp_fin_timeout = 15
## Decrease the time default value for connections to keep alive
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_intvl = 15
#### TUNING NETWORK PERFORMANCE ###
## Default Socket Receive Buffer
net.core.rmem_default = 31457280
## Maximum Socket Receive Buffer
net.core.rmem_max = 33554432
## Default Socket Send Buffer
net.core.wmem_default = 31457280
## Maximum Socket Send Buffer
net.core.wmem_max = 33554432
## Increase number of incoming connections
net.core.somaxconn = 65535
## Increase number of incoming connections backlog
net.core.netdev_max_backlog = 65536
## Increase the maximum amount of option memory buffers
net.core.optmem_max = 25165824
## Increase the maximum total buffer-space allocatable
## This is measured in units of pages (4096 bytes)
net.ipv4.tcp_mem = 786432 1048576 26777216
net.ipv4.udp_mem = 65536 131072 262144
## Increase the read-buffer space allocatable
net.ipv4.tcp_rmem = 8192 87380 33554432
net.ipv4.udp_rmem_min = 16384
## Increase the write-buffer-space allocatable
net.ipv4.tcp_wmem = 8192 65536 33554432
net.ipv4.udp_wmem_min = 16384
## Increase the tcp-time-wait buckets pool size to prevent simple DOS attacks
net.ipv4.tcp_max_tw_buckets = 1440000
net.ipv4.tcp_tw_reuse = 1
net.ipv6.conf.all.disable_ipv6 = 1
net.ipv6.conf.default.disable_ipv6 = 1
net.ipv6.conf.lo.disable_ipv6 = 1

kernel.printk = 2 4 1 7

${this.title}

Code Editor : 99-sysctl.conf