修改linux内核

[770735008]

现有一个基于linux系统数据采集应用（http协议），如要增加单台服务器并发能力，需要
修改linux内核参数，在哪修改什么配置文件，各位长老可有见解？

[乌镇程序员]

/etc/sysctl.conf

[colddown]

编译时还是运行时，编译时应该是make menuconfig

[770735008]

net.ipv4.ip_local_port_range = 1024 65000 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.ipv4.tcp_fin_timeout = 10 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_sack = 0 net.core.netdev_max_backlog = 50000 net.ipv4.tcp_no_metrics_save = 1 net.core.somaxconn = 262144 net.ipv4.tcp_syncookies = 0 net.ipv4.tcp_max_orphans = 262144 net.ipv4.tcp_max_syn_backlog = 262144 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_syn_retries = 2 #net.ipv4.ip_conntrack_max = 10240 能详细的注明下么

[770735008]

@2楼 是运行时

[770735008]

引用 1 楼 T5500 的回复:

/etc/sysctl.conf

net.ipv4.ip_local_port_range = 1024 65000 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.ipv4.tcp_fin_timeout = 10 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_sack = 0 net.core.netdev_max_backlog = 50000 net.ipv4.tcp_no_metrics_save = 1 net.core.somaxconn = 262144 net.ipv4.tcp_syncookies = 0 net.ipv4.tcp_max_orphans = 262144 net.ipv4.tcp_max_syn_backlog = 262144 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_syn_retries = 2 #net.ipv4.ip_conntrack_max = 10240 长老，能详细解释下么

[乌镇程序员]

引用 5 楼 WUYUN122 的回复:

[quote=引用 1 楼 T5500 的回复:] /etc/sysctl.conf

net.ipv4.ip_local_port_range = 1024 65000 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.ipv4.tcp_fin_timeout = 10 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_window_scaling = 0 net.ipv4.tcp_sack = 0 net.core.netdev_max_backlog = 50000 net.ipv4.tcp_no_metrics_save = 1 net.core.somaxconn = 262144 net.ipv4.tcp_syncookies = 0 net.ipv4.tcp_max_orphans = 262144 net.ipv4.tcp_max_syn_backlog = 262144 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_syn_retries = 2 #net.ipv4.ip_conntrack_max = 10240 长老，能详细解释下么[/quote] 问google呀，搜索sysctl 参数详解或优化