kernel.shmall = 3355443 # pages, 80% MEM or higher
16*1024*1024*1024*0.8/4096
6
kernel.shmmax = 13743895347 # bytes, 80% MEM or higher
16*1024*1024*1024*0.8
7
kernel.shmmni = 8192 #
8
net.core.netdev_max_backlog = 10000
9
net.core.rmem_default = 262144
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net.core.rmem_max = 4194304
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net.core.wmem_default = 262144
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net.core.wmem_max = 4194304
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net.core.somaxconn = 4096
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net.ipv4.tcp_fin_timeout = 5
15
vm.dirty_background_bytes = 409600000
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vm.dirty_expire_centisecs = 3000
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vm.dirty_ratio = 80
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vm.dirty_writeback_centisecs = 50
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vm.overcommit_memory = 0
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vm.swappiness = 0 #
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net.ipv4.ip_local_port_range = 40000 65535
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fs.nr_open = 20480000
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sysctl -p
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( )
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sysctl: setting key "/proc/sys/kernel/sem": Numerical result out of range
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kernel.sem = 4096 2097152000 4096 512000
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sysctl -w kernel.sem="4096 134217728 4096 32768"
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33
oracle https://www.modb.pro/db/222794
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sysctl -w kernel.sem="250 146000 250 1024"
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