请问这些参数在那个帮助文件可以找到

请问这些参数帮助文件在那可以找得到？谢谢


net.core.optmem_max = 40960
net.core.rmem_default = 65535
net.core.rmem_max = 8388608
net.core.wmem_default = 65535
net.core.wmem_max = 8388608
net.ipv4.tcp_rmem = 4096 87380 8388608
net.ipv4.tcp_wmem = 4096 65535 8388608
net.ipv4.tcp_mem = 8388608 8388608 8388608