[GitHub] [couchdb] nickva commented on pull request #4082: Bring back POWER full builds

[GitBox <gi...@apache.org>]

nickva commented on PR #4082:
URL: https://github.com/apache/couchdb/pull/4082#issuecomment-1167789834

   Adding the VM worked as expected, however it looks it's too slow to run tests.
   
   For instance x64 tests times look like:
   
   ```
   [2022-06-27T18:39:00.952Z]   couch_db: is_owner_test...ok
   [2022-06-27T18:39:00.952Z]   module 'couch_db_tests'
   [2022-06-27T18:39:00.952Z]     Database create/delete tests
   [2022-06-27T18:39:01.301Z]       couch_db_tests:93: should_create_db...[0.015 s] ok
   [2022-06-27T18:39:01.301Z]       couch_db_tests:102: should_delete_db...[0.013 s] ok
   [2022-06-27T18:39:01.301Z]       [done in 0.034 s]
   [2022-06-27T18:39:01.301Z]     Multiple database create/delete tests
   [2022-06-27T18:39:01.651Z]       couch_db_tests:112: should_create_multiple_dbs...[0.063 s] ok
   [2022-06-27T18:39:01.651Z]       couch_db_tests:125: should_delete_multiple_dbs...[0.069 s] ok
   [2022-06-27T18:39:01.651Z]       [done in 0.138 s]
   [2022-06-27T18:39:01.651Z]     Continious database create/delete tests
   [2022-06-27T18:39:02.001Z]       couch_db_tests:138: should_create_delete_database_continuously (10 times)...[0.116 s] ok
   [2022-06-27T18:39:03.209Z]       couch_db_tests:138: should_create_delete_database_continuously (100 times)...[1.107 s] ok
   ```
   (From https://ci-couchdb.apache.org/blue/rest/organizations/jenkins/pipelines/jenkins-cm1/pipelines/FullPlatformMatrix/branches/jenkins-bring-back-ppc64le/runs/2/nodes/218/log/?start=0)
   
   And PowerPC ones are quite a bit slower
   
   ```
   [2022-06-27T18:50:16.187Z] couch_db: is_owner_test...ok
   [2022-06-27T18:50:16.187Z] module 'couch_db_tests'
   [2022-06-27T18:50:16.187Z]   Database create/delete tests
   [2022-06-27T18:50:18.270Z]     couch_db_tests:93: should_create_db...[1.548 s] ok
   [2022-06-27T18:50:19.869Z]     couch_db_tests:102: should_delete_db...[1.461 s] ok
   [2022-06-27T18:50:19.869Z]     [done in 3.016 s]
   [2022-06-27T18:50:19.869Z]   Multiple database create/delete tests
   [2022-06-27T18:50:25.216Z]     couch_db_tests:112: should_create_multiple_dbs...*timed out*
   [2022-06-27T18:50:25.216Z]     undefined
   [2022-06-27T18:50:30.124Z]   couch_db_tests:125: should_delete_multiple_dbs...*timed out*
   [2022-06-27T18:50:30.124Z]   undefined
   [2022-06-27T18:50:30.602Z] [done in 10.003 s]
   [2022-06-27T18:50:30.602Z] Continious database create/delete tests
   [2022-06-27T18:50:48.560Z] couch_db_tests:138: should_create_delete_database_continuously (10 times)...[15.361 s] ok
   [2022-06-27T18:52:01.403Z] couch_db_tests:138: should_create_delete_database_continuously (100 times)...[73.174 s] ok
   [2022-06-27T18:52:01.403Z] [done in 88.542 s]
   [2022-06-27T18:52:01.403Z] Database open tests
   ```
   
   (From https://ci-couchdb.apache.org/blue/rest/organizations/jenkins/pipelines/jenkins-cm1/pipelines/FullPlatformMatrix/branches/jenkins-bring-back-ppc64le/runs/2/nodes/72/log/?start=0)
   
   `should_create_delete_database_continuously (100 times)` is about 73x slower and `should_create_db` at `1.548` vs `0.015 s` which also 100x slower.
   
   It could disk I/O or CPU throttling, haven't dove in to check yet, but I think will hold off enabling it for as it would make the full build flaky.


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