Re: 8.2 and earlier build times

Ben Gamari writes: snip

The "normal" and "profiled" build metrics are the +RTS -t lines extract from Cabal's profiled and unprofiled GHC invocations. I believe the RTS timings for 8.0.2 are broken due to a (fixed) RTS bug, although I can't come up with a reference at the moment.

I tried this again with regex-tdfa-1.2.2 and indeed I was able to reproduce Herbert's result, 8.0.2 normal: <> profiled: <> 8.2.1-rc2: normal: <> profiled: <> We'll need to look at what is going on here as this is a pretty significant regression. Cheers, - Ben