How is connect_latency_ms defined?

[Kenji Matsuoka]

I'm seeing large (multi-second) values in http://localhost:9994/graph/?g=metric:client/connect_latency_ms when testing a particular server.  At the same time I'm seeing large numbers of FailedFastExceptions.  How is connect_latency_ms defined?

[James Waldrop]

Sorry for the slow response -- this is a value that is provided by Finagle, and is essentially the amount of time that it takes to make a connection to the system under test. Our README has this section:

https://github.com/twitter/iago/blob/master/README.md#metrics

Which in turn points to Finagle:

http://twitter.github.io/finagle/guide/Metrics.html

but neither has connect_latency_ms. If my explanation isn't sufficient you should probably ask on the finagle users list. :)

James

On Mon, Oct 28, 2013 at 1:34 PM, Kenji Matsuoka <ken...@gmail.com> wrote:

I'm seeing large (multi-second) values in http://localhost:9994/graph/?g=metric:client/connect_latency_ms when testing a particular server.  At the same time I'm seeing large numbers of FailedFastExceptions.  How is connect_latency_ms defined?

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