互連效能變差,檢查UDP緩衝區設定,監控RAC度量

互連效能變差時,檢查UDP緩衝區設定,檢查互連網路硬體

[@more@]

[root@svr1 root]# sysctl net.core.rmem_max net.core.wmem_max net.core.rmem_default net.core.wmem_default

net.core.rmem_max = 262144
net.core.wmem_max = 262144
net.core.rmem_default = 262144
net.core.wmem_default = 262144

還可以直接從/proc/sys/net/core中讀取各值

使用下列sysctl命令將這些值增加至256K

sysctl -w net.core.rmem_max = 262144
sysctl -w net.core.wmem_max = 262144
sysctl -w net.core.rmem_default = 262144
sysctl -w net.core.wmem_default = 262144