Improve performance of transport in-use list.#472
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fafhrd91 merged 2 commits intoaio-libs:masterfrom Aug 26, 2015
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Connector keeps its in-use transport in a dictionary `_acquired` mapping hostnames/ports/ssl to lists of transports. Applications that open many connections to the same remote web service end up having a single-item dictionary with a long list as value. Whenever a transport is released, the item is `.remove()`d from the list that has a O(n) complexity. Also `.append()` on a python list can have O(n) complexity. In this patch we use a set instead, so `.remove()` and `add()` have O(1)
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Improve performance of transport in-use list.
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Connector keeps its in-use transport in a dictionary
_acquiredmapping hostnames/ports/ssl to lists of transports.
Applications that open many connections to the same remote web service
end up having a single-item dictionary with a long list as value.
Whenever a transport is released, the item is
.remove()d from the listthat has a O(n) complexity. Also
.append()on a python list can haveO(n) complexity.
In this patch we use a set instead, so
.remove()andadd()have O(1)