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Writing to net

Short Description

The server is writing a packet to the network.

Detailed Description​

Writing to net will be seen when MySQL is delivering data to a client. Be aware that this event will still be seen when the client in local to the server.

How to reduce this wait​

If you see an abnormal amount of threads in Writing to net state, check for:

  • Network interface errors
  • Busy networks

There are also reported possibilities of MySQL timing out a connection where the client is not consuming the MySQL output fast enough and the default 30 second timeout kicking in, but this should be considered an edge case.

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