Tests are 4x slower on Oracle since DBAL v3.4.0

[mvorisek]

Bug Report

Q	A
Version	3.4.0

Summary

Not sure what is exactly the problem, but since upgrade to DBAL v3.4.x, the CI takes ~7 minutes for Oracle vs. ~1.5 minutes before.

Current behaviour

before https://github.com/atk4/data/actions/runs/3133960125/jobs/5087921285#step:17:27, https://github.com/atk4/data/actions/runs/3133376169/jobs/5086678758#step:17:27
after https://github.com/atk4/data/actions/runs/3135574120/jobs/5091417197#step:17:27

Steps to reproduce

run atk4/data tests like in the CI:

https://github.com/atk4/data/blob/c30e90879bbf21ec946d648ee112d32b90edc9fd/.github/workflows/test-unit.yml#L236-L245

[morozov]

This is not necessarily caused by the DBAL. See doctrine/orm#9839 for example. The DBAL's own test suite became 40% faster as of #5268 (3.4.0).

You'll need to provide more details for this issue to be considered.

[mvorisek]

Any idea what the issue can be? Please see the diff - https://github.com/atk4/data/compare/8d1b2b2d3092432f832356226c6d4b4716e4d717 - no other change than DBAL version was made. Tested multiple times, same results.

Also, it seems you blocked me in the past in your GH account, I am sorry if I upset you, but this action stopped a notifications from you nor I am unable to comment on some of your php-src issues.

[morozov]

I blocked you because communication with you takes a lot of time and energy. You're saying you are sorry but at the same time when requested to provide more details you provide a link to the diff which changes the DBAL version, which is already known. As a result: time spent on interaction leads to zero progress.

[morozov]

Closing as previously warned in #5508 (comment).

[mvorisek]

before:

after:

problem is described in #5764, related with #5268 change

[github-actions]

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