Misc:Review Stats

bugzilla.mozilla.org review statistics

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If one looks at the reviews requested for Bugzilla, there are a non-trivial number of extremely old patches that have review requests on them. In order to help decide how best to deal with this, we'd like to get a better understanding of the various states that these bugs are in. In particular, it would be very helpful if someone who was good with data-mining bugzilla would be willing to try and come up with numerical answers to the following questions about unreviewed patches:

How many non-reviewed patches are there with what ages?

The review page shows the date that the patch was posted to bugzilla, not the date that review was requested. For how many patches do these dates significantly differ (eg by more than two weeks)?

What percentage of patches have r? set without an email target?

What percentage of patches have no apparent communication from the reviewer that the review will not be immediately forthcoming?

Of patches that do have such communication, what percentage is incorrect (ie the reviewer said "I'll review next week", but that didn't happen)?

What is the size distribution of the various patches?

What percentage have already gone through an iteration of the review process? Of those that have, how many / what percentage have already been reviewed by the same person on whom review is currently waiting?

How many/what percentage have review requests set against people who are no longer active in the project? How many such inactive review requestees are there?