On Thu, 2020-03-19 at 11:43 +0000, Mikko.Rapeli@... wrote:
On Thu, Mar 19, 2020 at 11:04:26AM +0000, Richard Purdie wrote:
Recipe parsing should hit 100% CPU, its one of the few places we can do that.
I'm not fully aware what bitbake does before starting task execution. With sumo, there is an initial spike in CPU use and then a long single thread wait where log shows "Initialising tasks..." and Cooker process is using a single core. For me this takes at least one minutes for every build. Same is visible with zeus too.
This isn't recipe parsing but runqueue setup and taskgraph calculation which happens after parsing but before task execution. More recent bitbake is probably a bit better at it but it is unfortunately a single threaded process :(
