RFR: 8356000: C1/C2-only modes use 2 compiler threads on low CPU count machines [v4]

[Aleksey Shipilev]

On Wed, 4 Jun 2025 12:28:45 GMT, Manuel Hässig <mhaessig at openjdk.org> wrote:

>> Aleksey Shipilev has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains 10 additional commits since the last revision:
>> 
>>  - Revert buffer size change
>>  - Merge branch 'master' into JDK-8356000-c1-c2-compiler-count
>>  - Merge branch 'master' into JDK-8356000-c1-c2-compiler-count
>>  - Better test, patch amendments
>>  - Merge branch 'master' into JDK-8356000-c1-c2-compiler-count
>>  - Merge branch 'master' into JDK-8356000-c1-c2-compiler-count
>>  - Unnecessary arch limitation
>>  - Simplify test
>>  - Adjust test bound
>>  - Fix
>
> test/hotspot/jtreg/compiler/arguments/TestCompilerCounts.java line 2:
> 
>> 1: /*
>> 2:  * Copyright Amazon.com Inc. or its affiliates. All Rights Reserved.
> 
> IANAL, but shouldn't this include the year?

Nope, that's our standard header. Saves us a hassle of updating the header every 365 days ;)

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PR Review Comment: https://git.openjdk.org/jdk/pull/24972#discussion_r2126623649