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https://issues.apache.org/jira/browse/YARN-6017?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15772031#comment-15772031
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chenrongwei commented on YARN-6017:
-----------------------------------
$ jmap -heap 31169
Attaching to process ID 31169, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 24.65-b04
using parallel threads in the new generation.
using thread-local object allocation.
Concurrent Mark-Sweep GC
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2147483648 (2048.0MB)
NewSize = 805306368 (768.0MB)
MaxNewSize = 805306368 (768.0MB)
OldSize = 5439488 (5.1875MB)
NewRatio = 2
SurvivorRatio = 8
PermSize = 134217728 (128.0MB)
MaxPermSize = 268435456 (256.0MB)
G1HeapRegionSize = 0 (0.0MB)
Heap Usage:
New Generation (Eden + 1 Survivor Space):
capacity = 724828160 (691.25MB)
used = 220609280 (210.389404296875MB)
free = 504218880 (480.860595703125MB)
30.43608018761302% used
Eden Space:
capacity = 644349952 (614.5MB)
used = 197290320 (188.1507110595703MB)
free = 447059632 (426.3492889404297MB)
30.61850464761112% used
>From Space:
capacity = 80478208 (76.75MB)
used = 23318960 (22.238693237304688MB)
free = 57159248 (54.51130676269531MB)
28.97549607466409% used
To Space:
capacity = 80478208 (76.75MB)
used = 0 (0.0MB)
free = 80478208 (76.75MB)
0.0% used
concurrent mark-sweep generation:
capacity = 1342177280 (1280.0MB)
used = 596879392 (569.2285461425781MB)
free = 745297888 (710.7714538574219MB)
44.470980167388916% used
Perm Generation:
capacity = 134217728 (128.0MB)
used = 48817648 (46.55613708496094MB)
free = 85400080 (81.44386291503906MB)
36.37198209762573% used
15971 interned Strings occupying 1520304 bytes.
> node manager physical memory leak
> ---------------------------------
>
> Key: YARN-6017
> URL: https://issues.apache.org/jira/browse/YARN-6017
> Project: Hadoop YARN
> Issue Type: Bug
> Components: yarn
> Affects Versions: 2.7.1
> Environment: OS:
> Linux guomai124041 2.6.32-431.el6.x86_64 #1 SMP Fri Nov 22 03:15:09 UTC 2013
> x86_64 x86_64 x86_64 GNU/Linux
> jvm:
> java version "1.7.0_65"
> Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
> Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)
> Reporter: chenrongwei
>
> In our produce environment, node manager's jvm memory has been set to
> '-Xmx2048m',but we notice that after a long time running the process' actual
> physical memory size had been reached to 12g (we got this value by top
> command as follow).
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 31169 data 20 0 13.2g 12g 6092 S 16.9 13.0 49183:13 java
> 31169: /usr/local/jdk/bin/java -Dproc_nodemanager -Xmx2048m
> -Dhadoop.log.dir=/home/data/programs/apache-hadoop-2.7.1/logs
> -Dyarn.log.dir=/home/data/programs/apache-hadoop-2.7.1/logs
> -Dhadoop.log.file=yarn-data-nodemanager.log
> -Dyarn.log.file=yarn-data-nodemanager.log -Dyarn.home.dir= -Dyarn.id.str=data
> -Dhadoop.root.logger=INFO,RFA -Dyarn.root.logger=INFO,RFA
> -Djava.library.path=/home/data/programs/apache-hadoop-2.7.1/lib/native
> -Dyarn.policy.file=hadoop-policy.xml -XX:PermSize=128M -XX:MaxPermSize=256M
> -XX:+UseC
> Address Kbytes Mode Offset Device Mapping
> 0000000000400000 4 r-x-- 0000000000000000 008:00001 java
> 0000000000600000 4 rw--- 0000000000000000 008:00001 java
> 0000000000601000 10094936 rw--- 0000000000000000 000:00000 [ anon ]
> 0000000770000000 2228224 rw--- 0000000000000000 000:00000 [ anon ]
> 00000007f8000000 131072 rw--- 0000000000000000 000:00000 [ anon ]
> 000000325ee00000 128 r-x-- 0000000000000000 008:00001 ld-2.12.so
> 000000325f01f000 4 r---- 000000000001f000 008:00001 ld-2.12.so
> 000000325f020000 4 rw--- 0000000000020000 008:00001 ld-2.12.so
> 000000325f021000 4 rw--- 0000000000000000 000:00000 [ anon ]
> 000000325f200000 1576 r-x-- 0000000000000000 008:00001 libc-2.12.so
> 000000325f38a000 2048 ----- 000000000018a000 008:00001 libc-2.12.so
> 000000325f58a000 16 r---- 000000000018a000 008:00001 libc-2.12.so
> 000000325f58e000 4 rw--- 000000000018e000 008:00001 libc-2.12.so
> 000000325f58f000 20 rw--- 0000000000000000 000:00000 [ anon ]
> 000000325f600000 92 r-x-- 0000000000000000 008:00001 libpthread-2.12.so
> 000000325f617000 2048 ----- 0000000000017000 008:00001 libpthread-2.12.so
> 000000325f817000 4 r---- 0000000000017000 008:00001 libpthread-2.12.so
> 000000325f818000 4 rw--- 0000000000018000 008:00001 libpthread-2.12.so
> 000000325f819000 16 rw--- 0000000000000000 000:00000 [ anon ]
> 000000325fa00000 8 r-x-- 0000000000000000 008:00001 libdl-2.12.so
> 000000325fa02000 2048 ----- 0000000000002000 008:00001 libdl-2.12.so
> 000000325fc02000 4 r---- 0000000000002000 008:00001 libdl-2.12.so
> 000000325fc03000 4 rw--- 0000000000003000 008:00001 libdl-2.12.so
> 000000325fe00000 28 r-x-- 0000000000000000 008:00001 librt-2.12.so
> 000000325fe07000 2044 ----- 0000000000007000 008:00001 librt-2.12.so
> 0000003260006000 4 r---- 0000000000006000 008:00001 librt-2.12.so
> 0000003260007000 4 rw--- 0000000000007000 008:00001 librt-2.12.so
> 0000003260200000 524 r-x-- 0000000000000000 008:00001 libm-2.12.so
> 0000003260283000 2044 ----- 0000000000083000 008:00001 libm-2.12.so
> 0000003260482000 4 r---- 0000000000082000 008:00001 libm-2.12.so
> 0000003260483000 4 rw--- 0000000000083000 008:00001 libm-2.12.so
> 0000003261200000 88 r-x-- 0000000000000000 008:00001 libresolv-2.12.so
> 0000003261216000 2048 ----- 0000000000016000 008:00001 libresolv-2.12.so
> 0000003261416000 4 r---- 0000000000016000 008:00001 libresolv-2.12.so
> 0000003261417000 4 rw--- 0000000000017000 008:00001 libresolv-2.12.so
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