poll is waiting on the socket to get something sent to it. If there are a lot of waits, there can be a network latency issue. Usually I suspect the code as the culprit first, then look at the network.
And yes, if you routinely have 1+ second waits on receiving data, then something somewhere is way wrong.
I see nothing wrong with the trace (copied below with an other formatting):
First, the client tries to connect to the server using (probably) non blocking socket. Upon receiving EINPROGRESS, it then polls() on the socket for connection completion with a max timeout of 2s. Very soon, the connection completes. The clients set then various options on the socket, and calls again poll() with a timeout of 1471228.928s, which completes after 1.12s with event input data received. This is fine.
Question: Is the timeout of 1471228.928s really intended?
No, its not intented. in php mysql client timeout set to 4 secs only. So scripts should not wait more than 4 secs. i can see large number of delayed poll() calls, few are above 10 secs. Do you think its a bug in mysql client?
-Raj
Quote:
Originally Posted by NH2
I see nothing wrong with the trace (copied below with an other formatting):
First, the client tries to connect to the server using (probably) non blocking socket. Upon receiving EINPROGRESS, it then polls() on the socket for connection completion with a max timeout of 2s. Very soon, the connection completes. The clients set then various options on the socket, and calls again poll() with a timeout of 1471228.928s, which completes after 1.12s with event input data received. This is fine.
Question: Is the timeout of 1471228.928s really intended?
No, its not intented. in php mysql client timeout set to 4 secs only. So scripts should not wait more than 4 secs. i can see large number of delayed poll() calls, few are above 10 secs. Do you think its a bug in mysql client?
-Raj
I do not know.
If the mysql interface you're using is well-known, chance is that either you made a mistake when using the interface or the interface has a (probably known) bug. If you can prove that everything you're doing everything right at your layer, but not at the layer below, then pass the ticket "down"
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