More speed improvements for default view collation
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Key: COUCHDB-746
URL: https://issues.apache.org/jira/browse/COUCHDB-746
Project: CouchDB
Issue Type: Improvement
Components: Database Core
Affects Versions: 0.11
Reporter: Adam Kocoloski
Fix For: 1.1
We left Paul's less_json.patch hanging in COUCHDB-495. I also noticed during
an eprof run that all the function calls to type_sort, less_same_type, etc.
seemed to be taking a non-trivial amount of time. Here's a patch to try to
address both those issues.
I ran perf.py from COUCHDB-495 and got the following MegaView numbers
trunk
6.12
5.77
5.99
6.07
5.84
patch
5.73
4.94
4.75
5.00
5.28
Taking the minimum of each it looks like an 18% boost in indexing speed. The
SimpleView numbers were too close to differentiate.
There is one small change which I think is harmless -- I removed the code to
handle arbitrary tuples (as opposed to proplists). I don't see how a JSON
decoder could produce tuples which are not proplists.
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