tcp_keepalive_time設置很小有什么影響

hustwk

tcp_keepalive_time

The tcp_keepalive_time variable tells the TCP/IP stack how often to send TCP keepalive packets to keep an connection alive if it is currently unused. This value is only used when keepalive is enabled.

The tcp_keepalive_time variable takes an integer value which is counted in seconds. The default value is 7200 seconds, or 2 hours. This should be a good value for most hosts and will not take too much network resources from you. Do not set this value to low since it will then use up your network resources with unnecessary traffic.

這個值是tcp連接在發(fā)出�；钐綔y之前的等待時間，默認為2小時。實際生產(chǎn)環(huán)境中，因為NAT網(wǎng)關(guān)上面的會話信息只保持幾分鐘，如果服務器長時間沒有響應就會被斷開會話。為了防止這種情況發(fā)生，準備把這個值設置為2分鐘或者更短。不知道這個值設置短了之后會有什么影響，查看了許多資料，都沒有描述。

請各位指點。

ssffzz1

對斷網(wǎng)反應靈敏了。
但是相應的網(wǎng)絡負擔也大一些。