We have two choices, split the recipes amongst the parsing threads in
blocks ahead of time, or have a queue which parsers pull from when idle.
The optimum approach depends on how similar the pieces are. For the single
recipe reparse case, there is currently a significant wait for the feeder
thread to start (around 0.25s in a 2s command).
Its possible splitting into blocks in advance may be unluckly for some other
workloads but experimentally it seems to work better overall for me at least.
(Bitbake rev: ae79868861568d673a70472e85a4bde9e2d84a8f)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
d4036c6fcf