Another representation for ratio column when benchmarking

[YarShev]

Hi there,

After I tried asv for my needs, I saw that ratio column is relation after to before (I mean ratio=after/before) based on the output:

       before           after         ratio
     [74587461]       [0c9b56d0]
     <master>         <internal-error>
!        62910ms           failed      n/a  benchmarks.TimeBinaryOp.time_concat('int', (10128, 100, 10000, 128), 'mul', 1)
-         2663ms          1332ms     0.50  benchmarks.TimeConcat.time_concat('int', (10128, 100, 10000, 128), 'inner', 1)
-      1.130.01s          1415ms     0.12  benchmarks.TimeConcat.time_concat('int', (10128, 100, 10000, 128), 'inner', 0)

I think it's better to use ratio=before/after in order to showcase speed up or slowdown for an operation. At least wherever I saw ratio=before/after notation is used. Is it possible to change representation of ratio column?

Thanks in advance for attention!

[HaoZeke]

I think there's no real good answer to this, other than that the conventions are now documented better #1421. It isn't always before after, it could just be commit1 and altcommit1 and swapping them in the CLI would give the conventional view point as well. A PR would be the next step for a discussion on this, especially since the mark parameter is currently a bit overloaded in terms of ' '.