RFR: 8317562: [JFR] Compilation queue statistics

[Mat Carter]

On Tue, 17 Oct 2023 17:04:02 GMT, Cesar Soares Lucas <cslucas at openjdk.org> wrote:

>> Adding a new periodic jfr event to monitor and output statistics for the compiler queues.  You will see one event per compiler queue (c1 and c2)
>> 
>> Passes tier1 on linux (x86) and mac (aarch64)
>
> src/hotspot/share/compiler/compileBroker.hpp line 91:
> 
>> 89: 
>> 90:   int _size;
>> 91:   int _total_added;
> 
> Can total be negative?

no - changed to uint

> test/jdk/jdk/jfr/event/compiler/TestCompilerQueueUtilization.java line 36:
> 
>> 34:  * @test
>> 35:  * @key jfr
>> 36:  * @requires vm.hasJFR
> 
> Does it need C1 and/or C2?

yes requires c1 or c2

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PR Review Comment: https://git.openjdk.org/jdk/pull/16211#discussion_r1362628813
PR Review Comment: https://git.openjdk.org/jdk/pull/16211#discussion_r1362629511