Logging makes it look like usage stats generation instead of generating pages takes very long

[esbakker]

Originally I thought generating the usage stats took long, but it appears to be an issue with the logging. Take a look at these logs:

Generating Summary Outputs                                                                           (00:00.001 / 00:40.787, 556Mb)
DB Cumulative Time invested: 00:00:00.284
Sending Usage Stats to Server                                                                        (02:02.552 / 02:43.339, 508Mb)

It takes 2 minutes to send the usage stats, even though I opted out. First I thought the issue was with generating the stats (which still happens when you opt-out).
But it turns out that the genBasePages() call doesn't log anything while that is the part of the build that takes longer.