My very old and slow ~amd64 machine took 3 hours and 45-minutes to compile systemd-226 today. I was curious to know why it was taking so long to finish, so I used 'top' to see what was happening.
Turns out that two instances of 'sh' were each using 15-30% of CPU for a total of 30-60% (the machine has two CPUs). cc1 never even showed up in 'top' although the compiler was obviously compiling code because the build did eventually finish. I tried the same on a faster 4-core machine and I could see much the same thing happening during the systemd build. Can anyone else reproduce what I'm seeing? Is this 'normal'?
