RFR: 8323795: jcmd Compiler.codecache should print total size of code cache [v3]

[Yi Yang]

> 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
> 
> -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

Yi Yang has updated the pull request incrementally with one additional commit since the last revision:

  new output

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/17445/files
  - new: https://git.openjdk.org/jdk/pull/17445/files/a9939a85..841addcd

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17445&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17445&range=01-02

  Stats: 44 lines in 2 files changed: 10 ins; 11 del; 23 mod
  Patch: https://git.openjdk.org/jdk/pull/17445.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17445/head:pull/17445

PR: https://git.openjdk.org/jdk/pull/17445