cpu - 如何减少 Circle CI 或 Travis CI 上的 Elm 编译时间？

Question

elm 编译在 ci (circle/travis) 上非常慢。我个人在一个相当小的 elm 项目中遭受了超过 30m 的循环构建时间。 https://github.com/elm-lang/elm-compiler/issues/1473建议“CPU 计数检测是问题所在”，并建议使用 libsysconfcpus 返回 1 个 CPU，而不是实际检测到的数量。还有其他方法可以减轻这么长的编译时间吗？

Answer 1

来自https://elmlang.slack.com/archives/general/p1484149451013255

@rtfeldman:

there's a known speed problem with both Circle and Travis because they misreport their number of CPUs, but there's a workaround: add the equivalent of these to your Circle config:

• https://github.com/elm-community/elm-test/blob/master/.travis.yml#L6
• https://github.com/elm-community/elm-test/blob/master/.travis.yml#L22-L30
• https://github.com/elm-community/elm-test/blob/master/.travis.yml#L39-L41 (edited)

they basically swap out elm-make for a script that runs elm-make with sysconfcpus -n 2 so that elm-make becomes aware of the actual number of CPUs available

I talked with the Circle folks a bit about this, and the tl;dr is that they're not interested in fixing it, but it may fix itself in a future release of some upstream stuff they're using