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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2020/09/24 12:19:38 UTC

[GitHub] [incubator-nuttx] anchao edited a comment on pull request #1890: make/expression: improving up asm/C/C++ compile times

anchao edited a comment on pull request #1890:
URL: https://github.com/apache/incubator-nuttx/pull/1890#issuecomment-698305749


   Hi @davids5 
   
   Seems the improvement is not obvious if run the build on CI server, 
   But when I compile a C + + project locally, the improvement is very obvious,
   In this case I think compilation with multi-jobs (-j) are very necessary.
   
   Before patch:
   
   ```
   $ time make -j8
   
   real	7m9.702s
   user	17m11.087s
   sys	2m37.242s
   ```
   
   After patch:
   
   ```
   $ time make -j8
   
   real	2m16.006s
   user	14m47.700s
   sys	1m0.800s
   ```


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