[GitHub] [buildstream] gtristan commented on issue #1541: 1.6.3 performance question

[GitBox <gi...@apache.org>]

gtristan commented on issue #1541:
URL: https://github.com/apache/buildstream/issues/1541#issuecomment-1201264177

   This would be nice to get to the bottom of with a reproducible test case.
   
   I'm guessing this has something to do with opportunistic scheduling, we probably have some compose elements (or other elements with only `build-depends` dependencies) which the scheduler wants to establish it is impossible to build before resorting to requiring the build dependencies.
   
   Possibly we need to reorder the scheduling of fetching sources at the toplevel to occur after requiring build dependencies when we know that we'll need these dependencies anyway - but this is all speculation, we need to have a good test to reproduce.
   


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