Tests are slow, so I only left Debian os

[melezhik]

Also I use -to=home to address issue when tested against various rakudo versions ( the issue is not presented here, however this is a general problem ).

[melezhik]

I have an interesting effect, when using zef install -to=home Rakudo that is tested first has way more faster time , then the following one, irrespectively on version ...

Here, 2022.07 is tested first report:

21:27:59 :: O----------------O--------O-----------------------------------------------------------O------------O
21:27:59 :: | Rakudo Version | Status | Time                                                      | Linux Dist |
21:27:59 :: O================O========O===========================================================O============O
21:27:59 :: | 2022.07        | OK     | 1:26.51 real,129.52 user,7.70 sys / CPU Percentage: 158%  | debian     |
21:27:59 :: | 2022.06        | OK     | 3:55.38 real,353.37 user,23.51 sys / CPU Percentage: 160% | debian     |
21:27:59 :: ----------------------------------------------------------------------------------------------------

Here, Rakudo 2022.06 is tested first report:

20:47:00 :: O----------------O--------O-----------------------------------------------------------O------------O
20:47:00 :: | Rakudo Version | Status | Time                                                      | Linux Dist |
20:47:00 :: O================O========O===========================================================O============O
20:47:00 :: | 2022.06        | OK     | 1:30.74 real,133.11 user,8.00 sys / CPU Percentage: 155%  | debian     |
20:47:00 :: | 2022.07        | OK     | 4:04.41 real,369.63 user,24.25 sys / CPU Percentage: 161% | debian     |
20:47:00 :: ----------------------------------------------------------------------------------------------------

so 1 min VS 4 min is significant difference, a I don't know why this happens, maybe because when we run tests for the second whatever rakudo versions , cache (~/.raku) from the first Rakudo installation somehow affects the second Rakudo tests?

[melezhik]

also worth to mention that 4 minutes for tests is way too much ... 🤔

[melezhik]

is it even legit way to install into home (-to=home) and reuse the same files (~/.raku) across different rakudos ? cc @ugexe

[dwarring]

Worth noting that It's the precompilation overheads that are the bottleneck, not the tests themselves..

On a second run, zef test . takes about 30sec on my modest debian x86 i7 PC. prove6 -I. -j4 about 12sec.

[melezhik]

@dwarring the point I am trying to make here - that the tests that runs second time are always slower irrespectively on rakudo version, which is weird, as following the logic pre-compilation already happened (drying the first tests run) and the second tests run should be faster at this point, what I see is quite opposite ...