[Tarantool-patches] [PATCH v1] Keep perf results as gitlab-ci artifacts

[Alexander Turenko]

> Keep perf results as gitlab-ci artifacts

Nit: Let's add some prefix: I would use 'gitlab-ci'. Using of prefixes
is convenient and allows to traverse over commits faster.

> 
> Gitlab-ci pipeline modified in order to keep performance results into gitlab-ci artifacts.

Nit: Keep commit message body lines within 72 symbols.

>  
> Closes #4920
>  
> Github: https://github.com/tarantool/tarantool/tree/opiskunov/gh-4920-perf-artifacts
> Issue: https://github.com/tarantool/tarantool/issues/4920

Nit: Don't include issue no / branch into a commit message, only within
a email. Place them under '---' to distinguish from a commit message
itself.

> ---
>  .gitlab-ci.yml | 43 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
>  
> diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
> index fd265aa..4b05fa5 100644
> --- a/.gitlab-ci.yml
> +++ b/.gitlab-ci.yml
> @@ -201,12 +201,22 @@ perf_sysbench:
>    variables:
>      <<: *perf_vars_definition
>      BENCH: 'sysbench'
> +  artifacts:
> +    when: always
> +    paths:
> +      - Sysbench_result.txt
> +      - Sysbench_t_version.txt

I would deploy a directory with result as an artefact or use globs
(GitLab CI supports both). gitlab-ci.yml should not lean on hardcoded
bench-run paths. Can we formalize bench-run contract for performance
measurement results? Maybe, `${benchmark}_results` directory? Or
`${benchmark}_${conf}_results` if names intersection may be troublesome.

WBR, Alexander Turenko.