On 07/20/2011 10:43 AM, Pavel Moravec wrote:
Hi all,
I realised on every qpid version& system I used a poor performance of
qpid-config tool. It usually takes 2 to 3 seconds to execute a command, e.g.:
# time qpid-config add queue test
real 0m2.243s
user 0m0.161s
sys 0m0.027s
# time qpid-config del queue test
real 0m2.303s
user 0m0.208s
sys 0m0.037s
#
I wrote a simple C++ program to emulate some parts of qpid-config tool by
connecting to the broker and sending proper QMF message(s). The program
executes equivalent stuff almost instantly.
Why is qpid-config so slow? Is there some timeout waiting for (potentially
negative) response? Does it make sense / would not it be usefull to speed it up?
It's an issue with QMF. Setting up the initial QMF connection is very slow. I'm
not sure why. It most definitely would be good to speed it up, it annoys me no end.
If you have a large number of operations to do, you can write your own client in
python that sets up the QMF connection once, then uses it to do all the work.
That's not particularly easy right now, qpid-config is not set up to be reused
like that. It would be nice to have a little python API that mirrors the command
line arguments to qpid-config. It would be even nicer to fix the real problem by
getting the QMF init time down to something reasonable.
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