Hi developers, I recently noticed that trace mode was significantly slower on modern macOS than it used to be, and found some time to investigate the root cause.
If you saw the same, please test the current master branch state with https://github.com/macports/macports-base/commit/3b949ccfe7a309bce1cc7041cdf56871890b784d It should return your trace mode to previous speeds (about a 6-8x improvement compared to how slow it currently is). I've also done some benchmarking and have a few more patches in my pipeline that should bring a bit more (but rather minor compared to this) improvements. HTH, Clemens P.S.: I have not reported this problem to Apple. If somebody wants to verify that it occurs with all uses of copyfile(3), it would be nice if they could let them now.
