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From Gordon Sim <g...@redhat.com>
Subject Re: qpid::messaging::Sender::send() sometimes takes much longer than expected (in C++)
Date Wed, 09 Dec 2020 18:16:14 GMT
On 09/12/2020 13:35, Toralf Lund wrote:
> My question is simply, what might cause the send to take several 
> seconds? I can't see any reason why the communication itself should be 
> that slow; the software runs on a machine that's connected to the same 
> network switch as the broker. The systems do have a certain load, but I 
> didn't think it would be able to cause anything like this. And shouldn't 
> threading etc. make sure something gets done within a reasonable time in 
> any case? What am I missing?

One possibility might be lack of capacity (e.g. if the previous 100 
messages have not yet been acknowledged).

Is there any pattern (in time for example) as to when the long sends 
occur v. the more normal send times?

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