Some feedback here would be great to all of us that are struggling with 
this every day.

On Wednesday, January 10, 2018 at 7:41:56 AM UTC-8, Jeffrey Blattman wrote:
>
> Here are some numbers. Same code, same makefile. This is from a non-clean, 
> previously built module in both cases. So there should be nothing to do at 
> all.
>
> *On Nougat*
>
> SetupWizard $ time mm
> ============================================
> PLATFORM_VERSION_CODENAME=REL
> ... cut ...
> ============================================
> make: Entering directory `...'
> Running kati to generate build-d09ceb6bedfc4dba54e0e2e097f22474.ninja...
> No need to regenerate ninja file
> Starting build with ninja
> ninja: Entering directory `.'
> [100% 1/1] Ensure Jack server is installed and started
> Jack server already installed in "/home/jeff/.jack-server"
> Server is already running
> Bad request, see Jack server log
> make: Leaving directory `...'
>
> #### make completed successfully (2 seconds) ####
>
>
> *real 0m2.146s*
> user 0m0.700s
> sys 0m0.268s
>
>
> *On Oreo*
>
> SetupWizard $ time mm
> make: Entering directory `...'
> ============================================
> PLATFORM_VERSION_CODENAME=REL
> ... cut ...
> ============================================
> [2/2] bootstrap out/soong/.minibootstrap/build.ninja.in
> [1/1] out/soong/.bootstrap/bin/minibp out/soong/.bootstrap/build.ninja
> [1/1] out/soong/.bootstrap/bin/soong_build out/soong/build.ninja
> Clang SA is not enabled
> No need to regenerate ninja file
> [100% 1/1] out/soong/.bootstrap/bin/soong_build out/soong/build.ninja
> Clang SA is not enabled
> [100% 1/1] Ensuring Jack server is installed and started
> Jack server already installed in "/home/jeff/.jack-server"
> Server is already running
> make: Leaving directory `...'
>
> #### make completed successfully (23 seconds) ####
>
>
> *real 0m22.377s*
> user 1m4.048s
> sys 0m9.104s
>
> So on Oreo, it takes 22 seconds to perform a build that does nothing?
>
> ???
> Thanks.
>
>

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