Improved configuration of Linux low-latency high-throughput performance

One > Modify handle number

Ulimit–a

1 "Modify the file: /etc/security/limits.conf - Span style= "color: #000000; font-size:14px;" > current session run Span style= "font-family:arial, ' Sans-serif '; color: #000000; font-size:14px;" >ulimit-a command cannot be displayed)

1. * Soft Nofile 32768 #limit the maximum number of file handles for a single process (System alert when this limit is reached)  

2. * Hard Nofile 65536 #limit the maximum number of file handles for a single process (system error when this limit is reached)  

* soft nofile 32768

* Hard Nofile 65536

2 ) Modify the file: /etc/sysctl.conf . Add at the end of the file:

  Fs.file-max=655350

Run command:/sbin/sysctl-p make configuration effective

3> Temporary Modification

#step6: Set open file buffer with Root
ULIMIT-HSN 65534
#sudo echo "Ulimit-n 65535"

B > Modify TCP/UDP Cache

#step1: Stop iptables with Root
Service Iptables Stop

#step2: Set LIUNX system max TCP/UDP buffer
Sysctl-w net.core.rmem_max=67108864
Sysctl-w net.core.wmem_max=67108864

#step3set UDP Buffer
Sysctl-w net.core.rmem_default=33554432
Sysctl-w net.core.wmem_default=33554432

#step4: Set TCP buffer
Sysctl-w net.ipv4.tcp_rmem= "4096 33554432 33554432"
Sysctl-w net.ipv4.tcp_wmem= "98304 33554432 33554432"
Sysctl-w net.ipv4.tcp_mem= "98304 33554432 33554432"

#step5: Set TCP window scalling
Sysctl-w net.ipv4.tcp_window_scaling=1
#sysctl-W net.ipv4.ip_local_port_range= "1024 65000"

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Improved configuration of Linux low-latency high-throughput performance