Re: [PATCH 04/10] github: convert all Linux jobs to be containerized

> On Fri, Jan 03, 2025 at 01:56:40PM -0500, Jeff King wrote:
> 
> > I do wonder if it will affect run times. Presumably GitHub has made it
> > pretty fast to get things started on the bare runner image. Now we're
> > pulling docker images. That is hopefully pretty optimized and cached,
> > but it is extra work. Might be worth measuring.
> 
> Just peeking at your CI run here:
> 
>   https://github.com/git/git/actions/runs/12597967146
> 
> versus the latest run on Junio's master:
> 
>   https://github.com/git/git/actions/runs/12589300693
> 
> I see:
> 
>   job                 |  old | new
>   --------------------|------|------
>   linux-TEST-vars      11m30s 10m54s
>   linux-asan-ubsan     30m26s 31m14s
>   linux-gcc             9m47s 10m6s
>   linux-gcc-default     9m47s  9m41s
>   linux-leaks          25m50s 25m21s
>   linux-meson          10m36s 10m41s
>   linux-reftable       10m25s 10m23s
>   linux-reftable-leaks 27m18s 27m28s
>   linux-sha256          9m54s 10m31s
> 
> So it looks like any change is lost in the noise (sha256 is noticeably
> slower, but most jobs aren't, and some are even faster).