调整Linux内核处理C500k问题
发布时间：2021-11-22 09:39:49 所属栏目：PHP教程 来源：互联网
导读：Kernel Options Several parameters exist to allow for tuning and tweaking of socket-related parameters. In /etc/sysctl.conf there are a few options weve modified. First is fs.file-max, the maximum file descriptor limit. The default is quite
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Kernel Options Several parameters exist to allow for tuning and tweaking of socket-related parameters. In /etc/sysctl.conf there are a few options we’ve modified. First is fs.file-max, the maximum file descriptor limit. The default is quite low so this should be adjusted. Be careful if you’re not ready to go super high. Second, we have the socket buffer parameters net.ipv4.tcp_rmem and net.ipv4.tcp_wmem. These are the buffers for reads and writes respectively. Each requires three integer inputs: min, default, and max. These each correspond to the number of bytes that may be buffered for a socket. Set these low with a tolerant max to reduce the amount of ram used for each socket. The relevant portions of our config look like this: fs.file-max = 999999 net.ipv4.tcp_rmem = 4096 4096 16777216 net.ipv4.tcp_wmem = 4096 4096 16777216 Meaning that the kernel allows for 999,999 open file descriptors and each socket buffer has a minimum and default 4096-byte buffer, with a sensible max of 16MB. We also modified /etc/security/limits.conf to allow for 999,999 open file descriptors for all users. 第一步： sudo vim /etc/sysctl.conf 增加： fs.file-max =999999 net.ipv4.tcp_rmem =409640968192 net.ipv4.tcp_wmem =409640968192 net.ipv4.ip_local_port_range =102465535 第二步： sudo vim /etc/security/limits.conf 增加： *- nofile 999999 第三步： sudo reboot  （编辑：应用网_丽江站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
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