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https://github.com/serkan-ozal/jemstone-plugin
Plug-in repository for Jemstone
https://github.com/serkan-ozal/jemstone-plugin
Last synced: 15 days ago
JSON representation
Plug-in repository for Jemstone
- Host: GitHub
- URL: https://github.com/serkan-ozal/jemstone-plugin
- Owner: serkan-ozal
- Created: 2015-05-23T09:53:34.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2016-09-20T18:13:17.000Z (about 8 years ago)
- Last Synced: 2024-10-17T00:12:40.325Z (30 days ago)
- Language: Java
- Size: 2.56 MB
- Stars: 2
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Jemstone-Plugin
Plug-in repository for Jemstone
1. What is Jemstone-Plugin?
==============
**Jemstone-Plugin** repository contains all additional plugins (not built-in plugins) for [Jemstone](https://github.com/serkan-ozal/jemstone).
2. Plugins
==============
2.1. Heap Summary Plugin
--------------
Summarizes heap informations such as memory limits and capacity as global and as per generation (Eden space, Survivor spaces, Tenured space, G1 regions if G1 is used, ...) of target JVM.
Here is the [plugin](https://github.com/serkan-ozal/jemstone-plugin/blob/master/src/main/java/tr/com/serkanozal/jemstone/sa/plugin/heapsummary/HotSpotSAHeapSummarizerPlugin.java) and the [implementation](https://github.com/serkan-ozal/jemstone-plugin/blob/master/src/main/java/tr/com/serkanozal/jemstone/sa/plugin/heapsummary/HotSpotSAHeapSummarizerWorker.java)
The usage from commandline is:
```
tr.com.serkanozal.jemstone.Jemstone
(-i "HotSpot_Heap_Summarizer" )
|
(-p tr.com.serkanozal.jemstone.sa.plugin.heapsummary.HotSpotSAHeapSummarizerPlugin )
```
This is the sample output the plugin:
```
HotSpotSAKeyValueResult [{Heap Summary=
using thread-local object allocation.
Parallel GC with 8 thread(s)
Heap Limits:
Start address = 0x0000000081200000
Capacity = 198705152 (189) MB
End address = 0x000000008cf80000
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2128609280 (2030.0MB)
NewSize = 1572864 (1.5MB)
MaxNewSize = 709361664 (676.5MB)
OldSize = 132644864 (126.5MB)
NewRatio = 2
SurvivorRatio = 8
MetaspaceSize = 21807104 (20.796875MB)
CompressedClassSpaceSize = 1073741824 (1024.0MB)
MaxMetaspaceSize = 17592186044415 MB
G1HeapRegionSize = 0 (0.0MB)
Heap Usage:
PS Young Generation
Eden Space:
start = 0x0000000002154720
capacity = 61341696 (58.5MB)
end = 0x0000000005bd4720
top = 0x00000000d6af7378
bottom = 0x00000000d5b80000
used = 16216952 (15.465690612792969MB)
free = 45124744 (43.03430938720703MB)
26.437077970586273% used
From Space:
start = 0x00000000021547c0
capacity = 4718592 (4.5MB)
end = 0x00000000025d47c0
top = 0x00000000d9a7d720
bottom = 0x00000000d9600000
used = 4708128 (4.490020751953125MB)
free = 10464 (0.009979248046875MB)
99.77823893229167% used
To Space:
start = 0x0000000002154770
capacity = 6815744 (6.5MB)
end = 0x00000000027d4770
top = 0x00000000dae80000
bottom = 0x00000000dae80000
used = 0 (0.0MB)
free = 6815744 (6.5MB)
0.0% used
PS Old Generation
start = 0x0000000002155c40
capacity = 132644864 (126.5MB)
end = 0x0000000009fd5c40
used = 8666952 (8.265449523925781MB)
free = 123977912 (118.23455047607422MB)
6.533952192826704% used
}]
```
2.2. ClassLoader Stats Plugin
--------------
Prints the classloader stats such as loaded classes, bytes, parent classloader, etc ... for defined classloaders in the target JVM.
Here is the [plugin](https://github.com/serkan-ozal/jemstone-plugin/blob/master/src/main/java/tr/com/serkanozal/jemstone/sa/plugin/classloaderstats/HotSpotSAClassLoaderStatsPlugin.java) and the [implementation](https://github.com/serkan-ozal/jemstone-plugin/blob/master/src/main/java/tr/com/serkanozal/jemstone/sa/plugin/classloaderstats/HotSpotSAClassLoaderStatsWorker.java)
The usage from commandline is:
```
tr.com.serkanozal.jemstone.Jemstone
(-i "HotSpot_ClassLoader_Stats_Finder" )
|
(-p tr.com.serkanozal.jemstone.sa.plugin.classloaderstats.HotSpotSAClassLoaderStatsPlugin )
```
This is the sample output the plugin:
```
HotSpotSAKeyValueResult [{ClassLoader Stats=
Finding class loader instances ... Done.
Computing per loader stat ... Done.
Please wait ... Computing liveness .... Liveness analysis may be inaccurate ...
class_loader classes bytes parent_loader alive? type
=================================================================================================
1075 2026518 null live
0x0000000081307a30 0 0 0x0000000081264868 dead java/util/ResourceBundle$RBClassLoader@0x0000000017266838
0x00000000d6a0c8a0 1 1471 0x0000000081264868 dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x00000000d6a1a380 1 1471 0x0000000081264868 dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x00000000d6aabe38 1 1471 0x0000000081264868 dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x00000000d69ccf98 1 1471 0x0000000081264868 dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x00000000812648c0 0 0 null dead sun/misc/Launcher$ExtClassLoader@0x00000000171fbdb8
0x00000000d6a234a8 1 1471 null dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x00000000813b67c0 1 1471 null dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x00000000812d1b10 1 1471 null dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x00000000812d1bd0 1 1471 0x0000000081264868 dead sun/reflect/DelegatingClassLoader@0x00000000171d9870
0x0000000081264868 392 724033 0x00000000812648c0 dead sun/misc/Launcher$AppClassLoader@0x0000000017207788
total=12 1475 N/A 2762319 alive=1, dead=11 N/A
}]
```
**P.S:** Execution of this plugin may take a few minutes.
2.3. Diassembler Plugin
--------------
Prints the **JIT**ted native code of any given method dynamically at runtime in the target JVM.
Here is the [plugin](https://github.com/serkan-ozal/jemstone-plugin/blob/master/src/main/java/tr/com/serkanozal/jemstone/sa/plugin/disassembler/HotSpotSADisassemblerPlugin.java) and the [implementation](https://github.com/serkan-ozal/jemstone-plugin/blob/master/src/main/java/tr/com/serkanozal/jemstone/sa/plugin/disassembler/HotSpotSADisassemblerWorker.java)
The usage from commandline is:
```
tr.com.serkanozal.jemstone.Jemstone
(-i "HotSpot_Disassembler" )
|
(-p tr.com.serkanozal.jemstone.sa.plugin.disassembler.HotSpotSADisassemblerPlugin )
```
This is the sample output the plugin:
```
HotSpotSAKeyValueResult [{tr.com.serkanozal.jemstone.PluginDemo.findSum(long[])=
Information:
NMethod for tr/com/serkanozal/jemstone/PluginDemo.findSum([J)J content: [0x0000000002ca1f80, 0x0000000002ca20b8), code: [0x0000000002ca1f80, 0x0000000002ca20b8), data: [0x0000000002ca20b8, 0x0000000002ca2268), oops: [0x0000000002ca20b8, 0x0000000002ca20c0), frame size: 32
Disassembled code:
[Constants]
0x0000000002ca1f80: mov %eax,-0x6000(%rsp)
0x0000000002ca1f87: push %rbp
0x0000000002ca1f88: sub $0x10,%rsp
0x0000000002ca1f8c: mov 0xc(%rdx),%r10d
0x0000000002ca1f90: test %r10d,%r10d
0x0000000002ca1f93: jle 0x0000000002ca2061
0x0000000002ca1f99: test %r10d,%r10d
0x0000000002ca1f9c: jbe 0x0000000002ca2065
0x0000000002ca1fa2: mov %r10d,%r8d
0x0000000002ca1fa5: dec %r8d
0x0000000002ca1fa8: cmp %r10d,%r8d
0x0000000002ca1fab: jae 0x0000000002ca2065
0x0000000002ca1fb1: mov 0x10(%rdx),%rax
0x0000000002ca1fb5: mov %r10d,%r11d
0x0000000002ca1fb8: add $0xfffffff1,%r11d
0x0000000002ca1fbc: mov $0x1,%r9d
0x0000000002ca1fc2: mov $0x80000000,%ebx
0x0000000002ca1fc7: cmp %r11d,%r8d
0x0000000002ca1fca: cmovl %ebx,%r11d
0x0000000002ca1fce: cmp $0x1,%r11d
0x0000000002ca1fd2: jle 0x0000000002ca2042
0x0000000002ca1fd4: nopl 0x0(%rax,%rax,1)
0x0000000002ca1fdc: data16 data16 xchg %ax,%ax
0x0000000002ca1fe0: add 0x10(%rdx,%r9,8),%rax
0x0000000002ca1fe5: movslq %r9d,%r8
0x0000000002ca1fe8: add 0x18(%rdx,%r8,8),%rax
0x0000000002ca1fed: add 0x20(%rdx,%r8,8),%rax
0x0000000002ca1ff2: add 0x28(%rdx,%r8,8),%rax
0x0000000002ca1ff7: add 0x30(%rdx,%r8,8),%rax
0x0000000002ca1ffc: add 0x38(%rdx,%r8,8),%rax
0x0000000002ca2001: add 0x40(%rdx,%r8,8),%rax
0x0000000002ca2006: add 0x48(%rdx,%r8,8),%rax
0x0000000002ca200b: add 0x50(%rdx,%r8,8),%rax
0x0000000002ca2010: add 0x58(%rdx,%r8,8),%rax
0x0000000002ca2015: add 0x60(%rdx,%r8,8),%rax
0x0000000002ca201a: add 0x68(%rdx,%r8,8),%rax
0x0000000002ca201f: add 0x70(%rdx,%r8,8),%rax
0x0000000002ca2024: add 0x78(%rdx,%r8,8),%rax
0x0000000002ca2029: add 0x80(%rdx,%r8,8),%rax
0x0000000002ca2031: add 0x88(%rdx,%r8,8),%rax
0x0000000002ca2039: add $0x10,%r9d
0x0000000002ca203d: cmp %r11d,%r9d
0x0000000002ca2040: jl 0x0000000002ca1fe0
0x0000000002ca2042: cmp %r10d,%r9d
0x0000000002ca2045: jge 0x0000000002ca2055
0x0000000002ca2047: nop
0x0000000002ca2048: add 0x10(%rdx,%r9,8),%rax
0x0000000002ca204d: inc %r9d
0x0000000002ca2050: cmp %r10d,%r9d
0x0000000002ca2053: jl 0x0000000002ca2048
0x0000000002ca2055: add $0x10,%rsp
0x0000000002ca2059: pop %rbp
0x0000000002ca205a: test %eax,-0x2882060(%rip) # 0x0000000000420000
0x0000000002ca2060: retq
0x0000000002ca2061: xor %eax,%eax
0x0000000002ca2063: jmp 0x0000000002ca2055
0x0000000002ca2065: mov %rdx,%rbp
0x0000000002ca2068: mov $0xffffff86,%edx
0x0000000002ca206d: xchg %ax,%ax
0x0000000002ca206f: callq 0x00000000027f57a0
0x0000000002ca2074: int3
0x0000000002ca2075: mov $0xfffffff6,%edx
0x0000000002ca207a: nop
0x0000000002ca207b: callq 0x00000000027f57a0
0x0000000002ca2080: int3
0x0000000002ca2081: hlt
0x0000000002ca2082: hlt
0x0000000002ca2083: hlt
0x0000000002ca2084: hlt
0x0000000002ca2085: hlt
0x0000000002ca2086: hlt
0x0000000002ca2087: hlt
0x0000000002ca2088: hlt
0x0000000002ca2089: hlt
0x0000000002ca208a: hlt
0x0000000002ca208b: hlt
0x0000000002ca208c: hlt
0x0000000002ca208d: hlt
0x0000000002ca208e: hlt
0x0000000002ca208f: hlt
0x0000000002ca2090: hlt
0x0000000002ca2091: hlt
0x0000000002ca2092: hlt
0x0000000002ca2093: hlt
0x0000000002ca2094: hlt
0x0000000002ca2095: hlt
0x0000000002ca2096: hlt
0x0000000002ca2097: hlt
0x0000000002ca2098: hlt
0x0000000002ca2099: hlt
0x0000000002ca209a: hlt
0x0000000002ca209b: hlt
0x0000000002ca209c: hlt
0x0000000002ca209d: hlt
0x0000000002ca209e: hlt
0x0000000002ca209f: hlt
[Stub Code]
0x0000000002ca20a0: jmpq 0x000000000281c720
[Deopt Handler Code]
0x0000000002ca20a5: callq 0x0000000002ca20aa
0x0000000002ca20aa: subq $0x5,(%rsp)
0x0000000002ca20af: jmpq 0x00000000027f7200
0x0000000002ca20b4: hlt
0x0000000002ca20b5: hlt
0x0000000002ca20b6: hlt
0x0000000002ca20b7: hlt
}]
```