Description Wolfram Schneider 2021-07-12 18:07:21 UTC

The target "buildworld" does a lot of bootstrapping before we actually compile our current source code. It would be nice if we can see how much time we spent in each bootstrapping stage, and how much for the current code.

Here is a simple patch which runs the make command together with the time(1) command.

cd /usr/src && make buildworld
egrep  ' real | stage ' log.buildworld

>>> stage 1.1: legacy release compatibility shims
        0.18 real         0.11 user         0.11 sys
>>> stage 1.2: bootstrap tools
       51.61 real       957.71 user        26.57 sys
>>> stage 2.1: cleaning up the object tree
        5.25 real        76.18 user        30.59 sys
        4.02 real        48.22 user        18.68 sys
>>> stage 2.3: build tools
        1.71 real         7.21 user         1.90 sys
>>> stage 3: cross tools
      699.53 real     17984.32 user       379.21 sys
        0.08 real         0.03 user         0.04 sys
>>> stage 3.1: recording build metadata
        0.10 real         0.02 user         0.07 sys
        0.04 real         0.02 user         0.01 sys
>>> stage 4.1: building includes
        4.23 real        62.01 user        13.27 sys
>>> stage 4.2: building libraries
     1165.88 real     33415.91 user       919.59 sys
>>> stage 4.3: building lib32 shim libraries
        0.23 real         0.34 user         0.50 sys
        0.14 real         0.11 user         0.07 sys
        1.16 real         6.80 user         1.73 sys
        0.06 real         0.02 user         0.04 sys
        0.18 real         0.34 user         0.16 sys
        0.27 real         0.27 user         0.08 sys
        0.10 real         0.50 user         0.23 sys
      197.43 real      4766.05 user       401.80 sys
>>> stage 4.4: building everything
      273.69 real      6713.36 user       438.12 sys
     2413.52 real     64045.82 user      2241.87 sys