Visual chart of buildworld time usage by stages and steps

Re-building FreeBSD from source takes a lot of CPU resources. Depending on your machine it takes between 20min and several hours. This is a visualiation of the time the build stages and steps needs.

For more details, please read the FreeBSD Quarterly Status Reports 2021/q3: current-compilation-time-analyze

FreeBSD-14-current make buildworld chart by stages

1. AMD EPYC 2.5GHz, 3 CPUs/cores, make -j3
2. AMD EPYC 2.5GHz, 3 CPUs/cores, make -j1
3. AMD EPYC 2.5GHz, 3 CPUs/cores, make -j3, WITHOUT_TOOLCHAIN=yes

1. Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz, 32 CPUs/16 cores, make -j32
2. Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz, 32 CPUs/16 cores, make -j16, WITHOUT_TOOLCHAIN=yes

FreeBSD-14-current make buildworld chart by steps

1. AMD EPYC 2.5GHz, 3 CPUs/cores, make -j3
2. AMD EPYC 2.5GHz, 3 CPUs/cores, make -j1
3. Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz, 16 CPUs/16 cores, make -j16
4. Intel(R) Xeon(R) CPU E5-2630 v3 @ 2.40GHz, 16 CPUs/16 cores, make -j16, WITHOUT_TOOLCHAIN=yes

Known Issues

• this is work in progress, stay tuned...
• some time values may overlap
• steps less than 4 seconds may be not included in the statistics, to avoid unreadability
• time for steps is recorded when a step is done, not when it started. This can be confusing for parallel builds
• the tests on AMD are running as root, and the tests on Intel are running as a normal user
• the AMD machine is a cheap cloud VM with a nvme disk, and the Intel machine is a jail with a multiple hard disks. both are using the ZFS filesystem