When doing performance hacking on pg_upgrade it's often important to see individual runtimes to isolate changes. I've written versions of the attached patch numerous times, and I wouldn't be surprised if others have done the same. Is there any interest in adding something like the attached to pg_upgrade? The patch needs some cleaning and tidying up but I wanted to to gauge interest before investing time. I've added it to verbose mode mainly since it's not really all that informative for regular users I think.
-- Daniel Gustafsson
0001-Report-runtime-for-steps-in-pg_upgrade-verbose-mode.patch
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