Hi, On 2021-10-12 01:37:21 -0700, Andres Freund wrote: > non-cached build (world-bin): > current: 40.46s > ninja: 7.31s
Interestingly this is pretty close to the minimum achievable on my machine from the buildsystem perspective. A build with -fuse-ld=lld, which the above didn't use, takes 6.979s. The critical path is bison gram.y -> gram.c 4.13s gcc gram.c -> gram.o 2.05s gcc postgres .... 0.317 A very helpful visualization is to transform ninja's build logs into a tracefile with https://github.com/nico/ninjatracing I attached an example - the trace.json.gz can be uploaded as-is to https://ui.perfetto.dev/ It's quite a bit of of fun to look at imo. There's a few other things quickly apparent: - genbki prevents build progress due to dependencies on the generated headers. - the absolutely stupid way I implemented the python2->python3 regression test output conversion uses up a fair bit of resources - tablecmds.c, pg_dump.c, xlog.c and a few other files are starting to big enough to be problematic compile-time wise Greetings, Andres Freund
trace.json.gz
Description: application/gzip
