通过sysctl进行性能调优,设置net.core.rmem_default(r/w)/net.ipv4.tcp_mem/net.ipv4.udp_mem有什么区别

Performance tuning via sysctl, what is the difference between setting net.core.rmem_default (r/w) / net.ipv4.tcp_mem / net.ipv4.udp_mem

通过 net/core 设置 read/write mem 默认值和在 sysctl 中设置协议 min/max/default net/ipv4 有什么区别?

详细说明或资源请求

net.core.wmem_default
net.core.rmem_default
net.ipv4.tcp_mem
net.ipv4.udp_mem

谢谢

看看https://www.kernel.org/doc/Documentation/networking/ip-sysctl.txt https://www.kernel.org/doc/Documentation/sysctl/net.txt

net.ipv4.tcp_mem 和 net.ipv4.udp_mem 分别限制 tcp 和 udp 的总内核内存,而其他控制每个套接字缓冲区 space