RFR: 8323795: jcmd Compiler.codecache should print total size of code cache [v2]

[Yi Yang]

On Wed, 17 Jan 2024 06:56:26 GMT, Tobias Hartmann <thartmann at openjdk.org> wrote:

>> Yi Yang has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   new output && fix test
>
> The title is confusing. Should it be something like "jcmd Compiler.codecache should print total size of code cache"?

@TobiHartmann @vnkozlov 

In the first commit, the ouput is confusing(CodeCache and Total CodeHeap) if SegmentedCodeCache is turned off, i.e. 

CodeCache: size=118592Kb used=29Kb max_used=29Kb free=118562Kb
 bounds [0x00007fbe84622000, 0x00007fbe84892000, 0x00007fbe8b9f2000]
Total CodeHeap: size=118592Kb used=29Kb max_used=29Kb free=118562Kb
 total_blobs=474 nmethods=87 adapters=293
 compilation: enabled
              stopped_count=0, restarted_count=0
 full_count=0


So I made new change to 

-SegmentedCodeCache
CodeCache: size=245760Kb used=1366Kb max_used=1943Kb free=244393Kb
 bounds [0x00007fdcc89f2000, 0x00007fdcc8c62000, 0x00007fdcd79f2000]
 total_blobs=474, nmethods=87, adapters=293
 stopped_count=0, restarted_count=0, full_count=0 
 compilation=enabled

+SegmentedCodeCache
CodeHeap 'non-profiled nmethods': size=118592Kb used=29Kb max_used=29Kb free=118562Kb
 bounds [0x00007f89c8622000, 0x00007f89c8892000, 0x00007f89cf9f2000]
CodeHeap 'profiled nmethods': size=118588Kb used=80Kb max_used=80Kb free=118507Kb
 bounds [0x00007f89c09f2000, 0x00007f89c0c62000, 0x00007f89c7dc1000]
CodeHeap 'non-nmethods': size=8580Kb used=1258Kb max_used=1834Kb free=7321Kb
 bounds [0x00007f89c7dc1000, 0x00007f89c8031000, 0x00007f89c8622000]
CodeCache: size=245760Kb, used=1367Kb, max_used=1943Kb, free=244390Kb
 total_blobs=474, nmethods=87, adapters=293
 stopped_count=0, restarted_count=0, full_count=0 
 compilation=enabled

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PR Comment: https://git.openjdk.org/jdk/pull/17445#issuecomment-1897875983