1.9.2 go build takes up 100% of CPU while taking longer to build than 1.9.1

[benbot]

Please answer these questions before submitting your issue. Thanks!

What version of Go are you using (go version)?

1.9.2

Does this issue reproduce with the latest release?

yes

What operating system and processor architecture are you using (go env)?

Darwin amd64

What did you do?

run go build
If possible, provide a recipe for reproducing the error.
run go build

What did you expect to see?

Go build not take up 100% of my CPU while being much slower than builds on 1.9.1

What did you see instead?

Go taking up 100% of my CPU while being much slower than builds on 1.9.1

Build times are anywhere from 3-5x longer than 1.9.1 and grinds my computer to a halt by taking up 100% of the CPU

[davecheney]

Please add the -v flag and post the entire output that you see. Thanks

…

On Wed, Nov 1, 2017 at 6:03 AM, Benjamin Botwin ***@***.***> wrote: Please answer these questions before submitting your issue. Thanks! What version of Go are you using (go version)? 1.9.2 Does this issue reproduce with the latest release? yes What operating system and processor architecture are you using (go env)? Darwin amd64 What did you do? run go build If possible, provide a recipe for reproducing the error. run go build What did you expect to see? Go build not take up 100% of my CPU while being much slower than builds on 1.9.1 What did you see instead? Go taking up 100% of my CPU while being much slower than builds on 1.9.1 Build times are anywhere from 3-5x longer than 1.9.1 and grinds my computer to a halt by taking up 100% of the CPU — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#22515>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAAcAyU_Nuw9vAddbWgF_-8PZclI4DWXks5sx28QgaJpZM4QNRCI> .

[cespare]

I strongly suspect that you're rebuilding a lot of dependencies every time. Please use go build -i or go install to ensure they're installed, then compare again.

(Is there a wiki page we can link to for this FAQ? I wasn't able to find one.)

[benbot]

@cespare was right go build -I fixed that.

I'll need to keep that in mind next time I bump my go version