RFR: 8323795: jcmd Compiler.codecache counts total sizes of used/free

[Vladimir Kozlov]

On Tue, 16 Jan 2024 11:08:47 GMT, Yi Yang <yyang at openjdk.org> wrote:

> CodeHeap 'non-profiled nmethods': size=118592Kb used=29Kb max_used=29Kb free=118562Kb
>  bounds [0x00007fbe84622000, 0x00007fbe84892000, 0x00007fbe8b9f2000]
> CodeHeap 'profiled nmethods': size=118588Kb used=80Kb max_used=80Kb free=118507Kb
>  bounds [0x00007fbe7c9f2000, 0x00007fbe7cc62000, 0x00007fbe83dc1000]
> CodeHeap 'non-nmethods': size=8580Kb used=1258Kb max_used=1834Kb free=7321Kb
>  bounds [0x00007fbe83dc1000, 0x00007fbe84031000, 0x00007fbe84622000]
>  total_blobs=474 nmethods=87 adapters=293
>  compilation: enabled
>               stopped_count=0, restarted_count=0
>  full_count=0
> 
> 
> It's better to accumulates total size of used/free/size, for example
> 
> CodeHeap 'non-profiled nmethods': size=118592Kb used=29Kb max_used=29Kb free=118562Kb
>  bounds [0x00007fbe84622000, 0x00007fbe84892000, 0x00007fbe8b9f2000]
> CodeHeap 'profiled nmethods': size=118588Kb used=80Kb max_used=80Kb free=118507Kb
>  bounds [0x00007fbe7c9f2000, 0x00007fbe7cc62000, 0x00007fbe83dc1000]
> CodeHeap 'non-nmethods': size=8580Kb used=1258Kb max_used=1834Kb free=7321Kb
>  bounds [0x00007fbe83dc1000, 0x00007fbe84031000, 0x00007fbe84622000]
>  total_blobs=474 nmethods=87 adapters=293
>  compilation: enabled
>               stopped_count=0, restarted_count=0
>  full_count=0
> Total CodeHeap:
>  size=245760Kb, used=1367Kb, max used=1943Kb, free=244390Kb

Can you do next layout of output?:

CodeHeap 'non-nmethods': size=8580Kb used=1258Kb max_used=1834Kb free=7321Kb
 bounds [0x00007fbe83dc1000, 0x00007fbe84031000, 0x00007fbe84622000]
Total CodeHeap: size=245760Kb, used=1367Kb, max used=1943Kb, free=244390Kb
 total_blobs=474 nmethods=87 adapters=293, full_count=0
Compilation: enabled,  stopped_count=0, restarted_count=0

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PR Comment: https://git.openjdk.org/jdk/pull/17445#issuecomment-1894225955