RFR: 8317562: [JFR] Compilation queue statistics

[Mat Carter]

On Tue, 17 Oct 2023 01:06:29 GMT, Martijn Verburg <karianna 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/jfr/periodic/jfrCompilerQueueUtilization.cpp line 55:
> 
>> 53:   static JfrTicks last_sample_instant;
>> 54:   const JfrTickspan interval = cur_time - last_sample_instant;
>> 55:   for(int i = 0; i < 2; i ++)
> 
> 2 is a magic number, maybe a comment above the for declartion explaining why?

Thanks for the feedback, made this clearer

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PR Review Comment: https://git.openjdk.org/jdk/pull/16211#discussion_r1362382032