Regression of queries that project a large number of fields

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      Linux ip-10-0-0-85 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

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      Linux ip-10-0-0-85 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
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      Some of my benchmarks show the following (it happens both in the single and multi-threaded case scenario). When the number of fields to project is small the regression is not noticeable, I'll try to investigate a bit more on the root cause.
      Minimal test case attached.

      Master (as per today)

      connecting to: test
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      2.4.9

      connecting to: test
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        1. murmur_vs_oldhash.png
          98 kB
          Davide Italiano
        2. projection.js
          4 kB
          Davide Italiano

              Assignee:
              Backlog - Query Team (Inactive)
              Reporter:
              Davide Italiano (Inactive)
              Votes:
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                Created:
                Updated:
                Resolved: