[jira] [Commented] (HBASE-23779) Up the default fork count to make builds complete faster; make count relative to CPU count

["Mark Robert Miller (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-23779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17030336#comment-17030336 ] 

Mark Robert Miller commented on HBASE-23779:
--------------------------------------------

bq. More parallelism willl probably mean more test failure. Let me take a look see.

I'm going to convince you this is a good thing! But maybe not on main branches until it's a bit smooth.

> Up the default fork count to make builds complete faster; make count relative to CPU count
> ------------------------------------------------------------------------------------------
>
>                 Key: HBASE-23779
>                 URL: https://issues.apache.org/jira/browse/HBASE-23779
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>            Reporter: Michael Stack
>            Priority: Major
>
> Tests take a long time. Our fork count running all tests are conservative -- 1 (small) for first part and 5 for second part (medium and large). Rather than hardcoding we should set the fork count to be relative to machine size. Suggestion here is 0.75C where C is CPU count. This ups the CPU use on my box.
> Looking up at jenkins, it seems like the boxes are 24 cores... at least going by my random survey. The load reported on a few seems low though this not representative (looking at machine/uptime).
> More parallelism willl probably mean more test failure. Let me take a look see.



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