You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@tomcat.apache.org by xu cai <je...@gmail.com> on 2006/11/21 09:22:09 UTC
tomcat memory usage.
Env: Axis1.4/Tomcat 5.0.30/Java 1.5.0_07/Solaris 10.
Description :
right after system(tomcat) is started, the "top" command show that tomcat
process will use 210M memory, the heap size (using Jprofiler) is
58m/20m(total/used). there is a 150M gap between total process memory
size and java heap size.
I run a client to invoke the web service in a loop, couple houres later,
tomcat process memory size can grow to 510M, the heap size of is 190m/20m
(total/used). so the gap between process memory size and java heap size
grows to 320M. From gc log, I didn't any thing weired since the used heap
size can keep at 20m, no memory leak can be found at jprofiler.
So my questions are:
1, what is the difference between java process memory size and java heap
size ? why can it be 150M in right after tomcat is started ?
2, why the gap between top can heap can grows from 150M to 320M, where does
170M more memory gone ?
does anybody have simliar experience using axis/tomcat ? I need help
thanks
xucai
Client side code example:
*// get a port from client stub . ignored. *
* while (true) {
try {
long start=System.currentTimeMillis();
for ( int i=0; i<1000; i++) {
String reply= port.request(command); // web
service call
System.out.print(".");
}
long end=System.currentTimeMillis();
long used= (end-start)/1000;
System.out.println();
System.out.println("Time used: "+used);
} catch(Exception e) {
e.printStackTrace();
}
} *
--
- xucai
Re: tomcat memory usage.
Posted by xu cai <je...@gmail.com>.
Rainer Jung,
thanks for ur reply. I understand that JVM will use lots of memory besides
heap.
but I didn't see that the gap between the "heap" size and total memory size
can be stable.
it keeps on growing.
I list the pmap result below. there are lots of unknow memory allocated. Is
there any tool can list all memory allocated by jvm ?
4818: /usr/java/bin/java -Xmx512m -D_TOMCAT -server -Djava.endorsed.dirs=/op
00010000 64K r-x-- /opt/jdk1.5.0_07/bin/java
0002E000 16K rwx-- /opt/jdk1.5.0_07/bin/java
00032000 33808K rwx-- [ heap ]
C82F8000 32K rw--R [ anon ]
C83F8000 32K rw--R [ anon ]
C84F8000 32K rw--R [ anon ]
C85F8000 32K rw--R [ anon ]
C86F8000 32K rw--R [ anon ]
C87F8000 32K rw--R [ anon ]
C88F8000 32K rw--R [ anon ]
C89F8000 32K rw--R [ anon ]
C8AF8000 32K rw--R [ anon ]
C8BF8000 32K rw--R [ anon ]
C8CF6000 40K rw--R [ anon ]
C8DF8000 32K rw--R [ anon ]
C8EF8000 32K rw--R [ anon ]
C8FF8000 32K rw--R [ anon ]
C90F8000 32K rw--R [ anon ]
C91F8000 32K rw--R [ anon ]
C92F6000 40K rw--R [ anon ]
C93F6000 40K rw--R [ anon ]
C94F6000 40K rw--R [ anon ]
C95F6000 40K rw--R [ anon ]
C96F8000 32K rw--R [ anon ]
C97F8000 32K rw--R [ anon ]
C98F8000 32K rw--R [ anon ]
C99F8000 32K rw--R [ anon ]
C9AF6000 40K rw--R [ anon ]
C9BF6000 40K rw--R [ anon ]
C9CF6000 40K rw--R [ anon ]
C9DF6000 40K rw--R [ anon ]
C9EF8000 32K rw--R [ anon ]
C9FF8000 32K rw--R [ anon ]
CA0F8000 32K rw--R [ anon ]
CA1F8000 32K rw--R [ anon ]
CA2F8000 32K rw--R [ anon ]
CA3F8000 32K rw--R [ anon ]
CA4F8000 32K rw--R [ anon ]
CA5F8000 32K rw--R [ anon ]
CA6F8000 32K rw--R [ anon ]
CA7F8000 32K rw--R [ anon ]
CA8F8000 32K rw--R [ anon ]
CA9F8000 32K rw--R [ anon ]
CAAF8000 32K rw--R [ anon ]
CABF8000 32K rw--R [ anon ]
CACF8000 32K rw--R [ anon ]
CADF8000 32K rw--R [ anon ]
CAEF8000 32K rw--R [ anon ]
CAFF8000 32K rw--R [ anon ]
CB0F8000 32K rw--R [ anon ]
CB1F8000 32K rw--R [ anon ]
CB2F8000 32K rw--R [ anon ]
CB3F8000 32K rw--R [ anon ]
CB4F8000 32K rw--R [ anon ]
CB5F8000 32K rw--R [ anon ]
CB6F8000 32K rw--R [ anon ]
CB7F8000 32K rw--R [ anon ]
CB8F8000 32K rw--R [ anon ]
CB9F8000 32K rw--R [ anon ]
CBAF8000 32K rw--R [ anon ]
CBBF8000 32K rw--R [ anon ]
CBCF8000 32K rw--R [ anon ]
CBDF8000 32K rw--R [ anon ]
CBEF8000 32K rw--R [ anon ]
CBFF8000 32K rw--R [ anon ]
CC0F8000 32K rw--R [ anon ]
CC1F8000 32K rw--R [ anon ]
CC2F8000 32K rw--R [ anon ]
CC3F8000 32K rw--R [ anon ]
CC4F8000 32K rw--R [ anon ]
CC5F8000 32K rw--R [ anon ]
CC6F8000 32K rw--R [ anon ]
CC7F8000 32K rw--R [ anon ]
CC8F8000 32K rw--R [ anon ]
CC9F8000 32K rw--R [ anon ]
CCAF8000 32K rw--R [ anon ]
CCBF8000 32K rw--R [ anon ]
CCCF8000 32K rw--R [ anon ]
CCDF8000 32K rw--R [ anon ]
CCEF8000 32K rw--R [ anon ]
CCFF8000 32K rw--R [ anon ]
CD0F8000 32K rw--R [ anon ]
CD1F8000 32K rw--R [ anon ]
CD2F8000 32K rw--R [ anon ]
CD3F8000 32K rw--R [ anon ]
CD4F8000 32K rw--R [ anon ]
CD5F8000 32K rw--R [ anon ]
CD6F8000 32K rw--R [ anon ]
CD7F8000 32K rw--R [ anon ]
CD8F8000 32K rw--R [ anon ]
CD9F8000 32K rw--R [ anon ]
CDAF8000 32K rw--R [ anon ]
CDBF8000 32K rw--R [ anon ]
CDCF8000 32K rw--R [ anon ]
CDDF8000 32K rw--R [ anon ]
CDEF8000 32K rw--R [ anon ]
CDFF8000 32K rw--R [ anon ]
CE0F8000 32K rw--R [ anon ]
CE1F8000 32K rw--R [ anon ]
CE2F8000 32K rw--R [ anon ]
CE3F8000 32K rw--R [ anon ]
CE4F8000 32K rw--R [ anon ]
CE5F8000 32K rw--R [ anon ]
CE6F8000 32K rw--R [ anon ]
CE7F8000 32K rw--R [ anon ]
CE8F8000 32K rw--R [ anon ]
CE9F8000 32K rw--R [ anon ]
CEAF8000 32K rw--R [ anon ]
CEBF8000 32K rw--R [ anon ]
CECF8000 32K rw--R [ anon ]
CEDF8000 32K rw--R [ anon ]
CEEF8000 32K rw--R [ anon ]
CF1F4000 48K rw--R [ anon ]
CF2F4000 48K rw--R [ anon ]
CF3F4000 48K rw--R [ anon ]
CF4F6000 40K rw--R [ anon ]
CF5F6000 40K rw--R [ anon ]
CF6F6000 40K rw--R [ anon ]
CF7F6000 40K rw--R [ anon ]
CF8F6000 40K rw--R [ anon ]
CF9F6000 40K rw--R [ anon ]
CFAF6000 40K rw--R [ anon ]
CFBF6000 40K rw--R [ anon ]
CFCF6000 40K rw--R [ anon ]
CFDF6000 40K rw--R [ anon ]
CFEF6000 40K rw--R [ anon ]
CFFF6000 40K rw--R [ anon ]
D00F6000 40K rw--R [ anon ]
D01F6000 40K rw--R [ anon ]
D02F6000 40K rw--R [ anon ]
D03F6000 40K rw--R [ anon ]
D04F6000 40K rw--R [ anon ]
D05F6000 40K rw--R [ anon ]
D06F6000 40K rw--R [ anon ]
D07F6000 40K rw--R [ anon ]
D08F6000 40K rw--R [ anon ]
D09F6000 40K rw--R [ anon ]
D0AF4000 48K rw--R [ anon ]
D0BF2000 56K rw--R [ anon ]
D0CF6000 40K rw--R [ anon ]
D0DF6000 40K rw--R [ anon ]
D0EF6000 40K rw--R [ anon ]
D0FF6000 40K rw--R [ anon ]
D10F4000 48K rw--R [ anon ]
D11F6000 40K rw--R [ anon ]
D12F6000 40K rw--R [ anon ]
D13F6000 40K rw--R [ anon ]
D14F6000 40K rw--R [ anon ]
D15F4000 48K rw--R [ anon ]
D16F4000 48K rw--R [ anon ]
D17F4000 48K rw--R [ anon ]
D18F4000 48K rw--R [ anon ]
D19F4000 48K rw--R [ anon ]
D1AF6000 40K rw--R [ anon ]
D1BF4000 48K rw--R [ anon ]
D1CF4000 48K rw--R [ anon ]
D1DEE000 72K rw--R [ anon ]
D1EF6000 40K rw--R [ anon ]
D1FF6000 40K rw--R [ anon ]
D20F6000 40K rw--R [ anon ]
D21F8000 32K rw--R [ anon ]
D22F2000 56K rw--R [ anon ]
D23F8000 32K rw--R [ anon ]
D24F6000 40K rw--R [ anon ]
D25F4000 48K rw--R [ anon ]
D26F4000 48K rw--R [ anon ]
D27F8000 32K rw--R [ anon ]
D28EE000 72K rw--R [ anon ]
D29F8000 32K rw--R [ anon ]
D2AF6000 40K rw--R [ anon ]
D2BF6000 40K rw--R [ anon ]
D2CF8000 32K rw--R [ anon ]
D2DF8000 32K rw--R [ anon ]
D2EF6000 40K rw--R [ anon ]
D2FF8000 32K rw--R [ anon ]
D3060000 64K rwx-- [ anon ]
D3080000 696K r--s- dev:32,5 ino:56285
D3140000 64K rwx-- [ anon ]
D3160000 24K r-x-- /lib/nss_files.so.1
D3176000 8K rwx-- /lib/nss_files.so.1
D3180000 552K r--s- dev:32,5 ino:56261
D3280000 984K r--s- dev:32,5 ino:56260
D3380000 1448K r--s- dev:32,5 ino:56042
D3500000 1384K r--s- dev:32,5 ino:102831
D3660000 64K rwx-- [ anon ]
D3680000 1176K r--s- dev:32,5 ino:42838
D37E0000 8K r-x-- /lib/libkstat.so.1
D37F2000 8K rwx-- /lib/libkstat.so.1
D3800000 6872K r--s- dev:32,5 ino:32792
D3ED0000 32K r-x-- /opt/BTSutil/lib/libunic.so
D3EE6000 8K rwx-- /opt/BTSutil/lib/libunic.so
D3EF0000 8K rwx-- [ anon ]
D3F00000 784K r--s- dev:32,5 ino:62176
D3FD0000 72K r-x-- /opt/jdk1.5.0_07/jre/lib/sparc/libnet.so
D3FF0000 8K rwx-- /opt/jdk1.5.0_07/jre/lib/sparc/libnet.so
D4000000 784K r--s- dev:32,5 ino:32191
D417E000 8K rw--R [ anon ]
D41D0000 128K rwx-- [ anon ]
D427E000 8K rw--R [ anon ]
D42A0000 288K r-x-- /usr/lib/security/pkcs11_softtoken.so.1
D42F8000 16K rwx-- /usr/lib/security/pkcs11_softtoken.so.1
D4376000 8K rw--R [ anon ]
D437C000 16K rw--R [ anon ]
D4390000 24K r-x-- /usr/lib/libcryptoutil.so.1
D43A6000 8K rwx-- /usr/lib/libcryptoutil.so.1
D43B0000 40K r-x-- /usr/lib/libpkcs11.so.1
D43CA000 8K rwx-- /usr/lib/libpkcs11.so.1
D43D0000 56K r-x-- /opt/jdk1.5.0_07/jre/lib/sparc/libj2pkcs11.so
D43EC000 8K rwx-- /opt/jdk1.5.0_07/jre/lib/sparc/libj2pkcs11.so
D4400000 16384K rwx-- [ anon ]
D5400000 4096K rwx-- [ anon ]
D8400000 4096K rwx-- [ anon ]
D8800000 4096K rwx-- [ anon ]
D8C00000 4096K rwx-- [ anon ]
D9000000 4096K rwx-- [ anon ]
D9400000 4096K rwx-- [ anon ]
D9800000 12288K rwx-- [ anon ]
DA400000 16384K rwx-- [ anon ]
DB400000 4096K rwx-- [ anon ]
DB800000 20480K rwx-- [ anon ]
DCC00000 8192K rwx-- [ anon ]
DD400000 8192K rwx-- [ anon ]
DDC00000 4096K rwx-- [ anon ]
DE000000 4096K rwx-- [ anon ]
DE400000 4096K rwx-- [ anon ]
DE800000 8192K rwx-- [ anon ]
DF000000 8192K rwx-- [ anon ]
DF800000 12288K rwx-- [ anon ]
E0400000 4096K rwx-- [ anon ]
E0800000 8192K rwx-- [ anon ]
E1000000 8192K rwx-- [ anon ]
E1800000 12288K rwx-- [ anon ]
E2400000 16384K rwx-- [ anon ]
E3400000 4096K rwx-- [ anon ]
E3800000 16384K rwx-- [ anon ]
E4800000 16384K rwx-- [ anon ]
E5800000 8192K rwx-- [ anon ]
E6000000 12288K rwx-- [ anon ]
E6C00000 4096K rwx-- [ anon ]
E7000000 4096K rwx-- [ anon ]
E7400000 8192K rwx-- [ anon ]
E7C00000 8192K rwx-- [ anon ]
E8400000 20480K rwx-- [ anon ]
E9800000 16384K rwx-- [ anon ]
EA800000 12288K rwx-- [ anon ]
EB400000 4096K rwx-- [ anon ]
EB800000 8192K rwx-- [ anon ]
EC000000 8192K rwx-- [ anon ]
EC800000 16384K rwx-- [ anon ]
ED800000 4096K rwx-- [ anon ]
EDC00000 4096K rwx-- [ anon ]
EE000000 4096K rwx-- [ anon ]
EE400000 8192K rwx-- [ anon ]
EEC00000 4096K rwx-- [ anon ]
EF000000 12288K rwx-- [ anon ]
EFC00000 20480K rwx-- [ anon ]
F1000000 4096K rwx-- [ anon ]
F1400000 28672K rwx-- [ anon ]
F3000000 12288K rwx-- [ anon ]
F3C00000 28672K rwx-- [ anon ]
F5800000 4096K rwx-- [ anon ]
F5C00000 16384K rwx-- [ anon ]
F6C00000 4096K rwx-- [ anon ]
F7000000 16384K rwx-- [ anon ]
F8000000 8192K rwx-- [ anon ]
F8820000 184K r--s- dev:32,5 ino:56306
F8860000 16K r--s- dev:32,5 ino:56305
F8870000 120K r--s- dev:32,5 ino:56304
F88A0000 8K r--s- dev:32,5 ino:56303
F88B0000 56K r--s- dev:32,5 ino:56302
F88D0000 24K r--s- dev:32,5 ino:56301
F88E0000 24K r--s- dev:32,5 ino:56300
F88F0000 8K r--s- dev:32,5 ino:56298
F8976000 8K rw--R [ anon ]
F897A000 24K rw--R [ anon ]
F8990000 24K r--s- dev:32,5 ino:56297
F89A0000 8K r--s- dev:32,5 ino:56296
F89B0000 8K r--s- dev:32,5 ino:56294
F89C0000 32K r--s- dev:32,5 ino:56293
F89D0000 32K r--s- dev:32,5 ino:56292
F89E0000 112K r--s- dev:32,5 ino:56291
F8A7E000 8K rw--R [ anon ]
F8A90000 24K r--s- dev:32,5 ino:56290
F8AA0000 112K r--s- dev:32,5 ino:56287
F8AC0000 192K r--s- dev:32,5 ino:56286
F8B7E000 8K rw--R [ anon ]
F8B90000 112K r--s- dev:32,5 ino:56284
F8BB0000 24K r--s- dev:32,5 ino:56283
F8BC0000 24K r--s- dev:32,5 ino:56282
F8BD0000 128K r--s- dev:32,5 ino:56280
F8C00000 4096K rwx-- [ anon ]
F9000000 4096K rwx-- [ anon ]
F9400000 4096K rwx-- [ anon ]
FAC10000 24K r--s- dev:32,5 ino:56281
FAC20000 24K r--s- dev:32,5 ino:56279
FAC30000 352K r--s- dev:32,5 ino:56274
FAC90000 40K r--s- dev:32,5 ino:56273
FACA0000 96K r--s- dev:32,5 ino:56272
FACC0000 48K r--s- dev:32,5 ino:56271
FACD0000 8K r--s- dev:32,5 ino:56270
FACE0000 56K r--s- dev:32,5 ino:56267
FAD78000 32K rw--R [ anon ]
FAD90000 16K r--s- dev:32,5 ino:56269
FADA0000 352K r--s- dev:32,5 ino:56265
FAE78000 32K rw--R [ anon ]
FAE90000 112K r--s- dev:32,5 ino:56266
FAEB0000 48K r--s- dev:32,5 ino:56264
FAEC0000 112K r--s- dev:32,5 ino:56263
FAEE0000 112K r--s- dev:32,5 ino:56262
FAF7E000 8K rw--R [ anon ]
FAF90000 32K r--s- dev:32,5 ino:56268
FAFA0000 336K r--s- dev:32,5 ino:56224
FB000000 8632K r--s- dev:32,5 ino:24857
FB880000 16K r--s- dev:32,5 ino:56259
FB890000 32K r--s- dev:32,5 ino:56217
FB8A0000 32K r--s- dev:32,5 ino:56184
FB8B0000 48K r--s- dev:32,5 ino:54460
FB8C0000 16K r--s- dev:32,5 ino:54459
FB8D0000 40K r--s- dev:32,5 ino:62059
FB8E0000 56K r--s- dev:32,5 ino:54466
FB97E000 8K rw--R [ anon ]
FB990000 384K r--s- dev:32,5 ino:42526
FBA7E000 8K rw--R [ anon ]
FBA90000 120K r--s- dev:32,5 ino:42868
FBAC0000 192K r--s- dev:32,5 ino:42839
FBB00000 8K rwx-- [ anon ]
FBB02000 8K rwx-- [ anon ]
FBB04000 8K rwx-- [ anon ]
FBB06000 8K rwx-- [ anon ]
FBB08000 8K rwx-- [ anon ]
FBB0A000 24K rwx-- [ anon ]
FBB10000 32K rwx-- [ anon ]
FBB18000 8K rwx-- [ anon ]
FBB1A000 40K rwx-- [ anon ]
FBB24000 16K rwx-- [ anon ]
FBB28000 16K rwx-- [ anon ]
FBB2C000 8K rwx-- [ anon ]
FBB2E000 8K rwx-- [ anon ]
FBB30000 8K rwx-- [ anon ]
FBB32000 16K rwx-- [ anon ]
FBB36000 16K rwx-- [ anon ]
FBB3A000 24K rwx-- [ anon ]
FBB40000 8K rwx-- [ anon ]
FBB42000 16K rwx-- [ anon ]
FBB46000 16K rwx-- [ anon ]
FBB4A000 24K rwx-- [ anon ]
FBB50000 32K rwx-- [ anon ]
FBB58000 8K rwx-- [ anon ]
FBB5A000 32K rwx-- [ anon ]
FBB62000 32K rwx-- [ anon ]
FBB6A000 16K rwx-- [ anon ]
FBB6E000 24K rwx-- [ anon ]
FBB74000 8K rwx-- [ anon ]
FBB76000 8K rwx-- [ anon ]
FBB78000 16K rwx-- [ anon ]
FBB7C000 16K rwx-- [ anon ]
FBB80000 40K rwx-- [ anon ]
FBB8A000 32K rwx-- [ anon ]
FBB92000 24K rwx-- [ anon ]
FBB98000 8K rwx-- [ anon ]
FBB9A000 16K rwx-- [ anon ]
FBB9E000 16K rwx-- [ anon ]
FBBA2000 32K rwx-- [ anon ]
FBBAA000 8K rwx-- [ anon ]
FBBC0000 232K r--s- dev:32,5 ino:54498
FBC00000 38944K r--s- dev:32,5 ino:24856
FE210000 120K r--s- dev:32,5 ino:42863
FE240000 32K r--s- dev:32,5 ino:42840
FE250000 168K r--s- dev:32,5 ino:42843
FE280000 32K rwx-- [ anon ]
FE288000 8K rwx-- [ anon ]
FE2A0000 8K rwx-- [ anon ]
FE2A2000 8K rwx-- [ anon ]
FE2A4000 8K rwx-- [ anon ]
FE2A6000 8K rwx-- [ anon ]
FE2A8000 8K rwx-- [ anon ]
FE2AA000 24K rwx-- [ anon ]
FE2B0000 32K rwx-- [ anon ]
FE2B8000 8K rwx-- [ anon ]
FE2BA000 40K rwx-- [ anon ]
FE2C4000 16K rwx-- [ anon ]
FE2C8000 16K rwx-- [ anon ]
FE2CC000 8K rwx-- [ anon ]
FE2CE000 8K rwx-- [ anon ]
FE2D0000 8K rwx-- [ anon ]
FE2D2000 16K rwx-- [ anon ]
FE2D6000 16K rwx-- [ anon ]
FE2DA000 24K rwx-- [ anon ]
FE2E0000 8K rwx-- [ anon ]
FE2E2000 16K rwx-- [ anon ]
FE2E6000 16K rwx-- [ anon ]
FE2EA000 24K rwx-- [ anon ]
FE2F0000 32K rwx-- [ anon ]
FE2F8000 8K rwx-- [ anon ]
FE2FA000 32K rwx-- [ anon ]
FE302000 32K rwx-- [ anon ]
FE30A000 16K rwx-- [ anon ]
FE30E000 24K rwx-- [ anon ]
FE314000 8K rwx-- [ anon ]
FE316000 8K rwx-- [ anon ]
FE318000 16K rwx-- [ anon ]
FE31C000 16K rwx-- [ anon ]
FE320000 40K rwx-- [ anon ]
FE32A000 32K rwx-- [ anon ]
FE332000 24K rwx-- [ anon ]
FE338000 8K rwx-- [ anon ]
FE33A000 16K rwx-- [ anon ]
FE33E000 16K rwx-- [ anon ]
FE342000 32K rwx-- [ anon ]
FE34A000 8K rwx-- [ anon ]
FE34C000 8K rwx-- [ anon ]
FE34E000 8K rwx-- [ anon ]
FE350000 16K rwx-- [ anon ]
FE354000 8K rwx-- [ anon ]
FE356000 24K rwx-- [ anon ]
FE35C000 40K rwx-- [ anon ]
FE366000 8K rwx-- [ anon ]
FE368000 56K rwx-- [ anon ]
FE376000 24K rwx-- [ anon ]
FE37C000 56K rwx-- [ anon ]
FE38A000 8K rwx-- [ anon ]
FE38C000 32K rwx-- [ anon ]
FE394000 8K rwx-- [ anon ]
FE396000 32K rwx-- [ anon ]
FE39E000 16K rwx-- [ anon ]
FE3A2000 8K rwx-- [ anon ]
FE3B0000 16K r--s- dev:32,5 ino:56215
FE3C0000 8K r--s- dev:32,5 ino:32190
FE3D0000 176K r--s- dev:32,5 ino:32180
FE400000 24K rwx-- [ anon ]
FE406000 8K rwx-- [ anon ]
FE408000 8K rwx-- [ anon ]
FE40A000 8K rwx-- [ anon ]
FE40C000 8K rwx-- [ anon ]
FE40E000 8K rwx-- [ anon ]
FE410000 8K rwx-- [ anon ]
FE412000 8K rwx-- [ anon ]
FE414000 8K rwx-- [ anon ]
FE416000 8K rwx-- [ anon ]
FE418000 8K rwx-- [ anon ]
FE41A000 8K rwx-- [ anon ]
FE41C000 8K rwx-- [ anon ]
FE41E000 8K rwx-- [ anon ]
FE420000 8K rwx-- [ anon ]
FE490000 160K r--s- dev:32,5 ino:32179
FE4C0000 64K rwx-- [ anon ]
FE4E0000 64K rw--- [ anon ]
FE500000 536K r--s- dev:32,5 ino:24855
FE590000 64K rw--- [ anon ]
FE5B0000 32K rwx-- [ anon ]
FE5B8000 8K rwx-- [ anon ]
FE5E0000 88K r--s- dev:32,5 ino:24841
FE600000 8K rwx-- [ anon ]
FE610000 64K r-x-- /opt/jdk1.5.0_07/jre/lib/sparc/libzip.so
FE620000 8K rwx-- /opt/jdk1.5.0_07/jre/lib/sparc/libzip.so
FE630000 144K r-x-- /opt/jdk1.5.0_07/jre/lib/sparc/libjava.so
FE664000 8K rwx-- /opt/jdk1.5.0_07/jre/lib/sparc/libjava.so
FE670000 56K r-x-- /opt/jdk1.5.0_07/jre/lib/sparc/libverify.so
FE68E000 8K rwx-- /opt/jdk1.5.0_07/jre/lib/sparc/libverify.so
FE6A0000 40K r--s- dev:32,5 ino:49255
FE6B0000 8K rwxs- [ anon ]
FE6C0000 32K rw-s- dev:274,2 ino:1016152149
FE6D0000 32K r-x--
/opt/jdk1.5.0_07/jre/lib/sparc/native_threads/libhpi.so
FE6E8000 8K rwx--
/opt/jdk1.5.0_07/jre/lib/sparc/native_threads/libhpi.so
FE6EA000 8K rwx--
/opt/jdk1.5.0_07/jre/lib/sparc/native_threads/libhpi.so
FE700000 680K r-x-- /lib/libm.so.2
FE7B8000 32K rwx-- /lib/libm.so.2
FE7D0000 8K rwx-- [ anon ]
FE7E0000 16K r-x-- /lib/libmp.so.2
FE7F4000 8K rwx-- /lib/libmp.so.2
FE800000 7888K r-x-- /opt/jdk1.5.0_07/jre/lib/sparc/server/libjvm.so
FEFC4000 400K rwx-- /opt/jdk1.5.0_07/jre/lib/sparc/server/libjvm.so
FF028000 64K rwx-- /opt/jdk1.5.0_07/jre/lib/sparc/server/libjvm.so
FF040000 8K rwx-- [ anon ]
FF050000 8K r-x-- /platform/sun4u/lib/libmd5_psr.so.1
FF062000 8K rwx-- /platform/sun4u/lib/libmd5_psr.so.1
FF070000 8K r-x-- /lib/libmd5.so.1
FF082000 8K rwx-- /lib/libmd5.so.1
FF090000 32K r-x-- /lib/libuutil.so.1
FF0A8000 8K rwx-- /lib/libuutil.so.1
FF0B0000 8K r-x-- /lib/libdoor.so.1
FF0C2000 8K rwx-- /lib/libdoor.so.1
FF0D0000 96K r-x-- /lib/libscf.so.1
FF0F8000 8K rwx-- /lib/libscf.so.1
FF100000 584K r-x-- /lib/libnsl.so.1
FF1A2000 40K rwx-- /lib/libnsl.so.1
FF1AC000 24K rwx-- /lib/libnsl.so.1
FF1C0000 8K rwx-- [ anon ]
FF1D0000 16K r-x-- /lib/libm.so.1
FF1E2000 8K rwx-- /lib/libm.so.1
FF1F0000 48K r-x-- /usr/lib/libCrun.so.1
FF20A000 8K rwx-- /usr/lib/libCrun.so.1
FF20C000 16K rwx-- /usr/lib/libCrun.so.1
FF220000 8K r---- [ anon ]
FF230000 48K r-x-- /lib/libsocket.so.1
FF24C000 8K rwx-- /lib/libsocket.so.1
FF260000 8K r-x-- /usr/lib/libsched.so.1
FF270000 8K r-x-- /platform/sun4u-us3/lib/libc_psr.so.1
FF280000 864K r-x-- /lib/libc.so.1
FF368000 32K rwx-- /lib/libc.so.1
FF370000 8K rwx-- /lib/libc.so.1
FF380000 8K rwx-- [ anon ]
FF390000 24K rwx-- [ anon ]
FF3A0000 8K r-x-- /lib/libdl.so.1
FF3B0000 176K r-x-- /lib/ld.so.1
FF3EC000 8K rwx-- /lib/ld.so.1
FF3EE000 8K rwx-- /lib/ld.so.1
FF3F8000 16K r-x-- /lib/libthread.so.1
FFB80000 24K ----- [ anon ]
FFBEC000 80K rw--- [ stack ]
total 684104K
On 11/21/06, Rainer Jung <ra...@kippdata.de> wrote:
>
> Usually the term heap is used for the sum of the new space, one of the
> two semi spaces (both usually around a couple of MB) and tenured. The
> size of each of these can be viewed e.g. with jconsole, which comes with
> your JVM.
>
> Additional memory is used for perm (class data), which should generally
> be in the reange of 10-60MB, depending on how many classes you have.
>
> Further memory is needed for thread stacks, native libs and in Java 1.5
> for class sharing meta data.
>
> You can have a look at the native side of things by the Solaris command
> pmap.
>
> On Solaris you should not use top. Use prstat instead.
>
> Does the gap stabilize after some time?
>
> Regards,
>
> Rainer
>
> xu cai schrieb:
> > hi Steffen,
> >
> > thanks for ur reply. I still have questions on that, see that in-line.
> >
> > On 11/21/06, Steffen Heil <li...@steffen-heil.de> wrote:
> >>
> >> Hi
> >>
> >> > Description :
> >> > right after system(tomcat) is started, the "top" command show
> >> > that tomcat process will use 210M memory, the heap size
> >> > (using Jprofiler) is 58m/20m(total/used). there is a 150M gap
> >> > between total process memory size and java heap size.
> >>
> >> There needs to be some memory for the JVM as well as your classes.
> >> Furthermore GCs may keep two copies of the youngest generation part of
> >> the
> >> heap.
> >
> >
> > Yes, some memory is needed for JVM and classes, also GC keep copies of
> > young
> > generation part of heap.
> >
> > Since the heap memory is managed well by GC, used heap memory grows from
> > 20M
> > to 160M gracefully and come back to 20M.
> > But my question is why the total memory size of the process (tomcat)
> grows
> > up from 230M to more than 520M. there is no significant memory grow in
> > java
> > heap, why the total memory can grow up almost 300M ?
> >
> >> So my questions are:
> >> > 1, what is the difference between java process memory size
> >> > and java heap size ? why can it be 150M in right after tomcat
> >> > is started ?
> >> > 2, why the gap between top can heap can grows from 150M to
> >> > 320M, where does 170M more memory gone ?
> >>
> >> I assume it was needed in between.
> >> However, memory allocated by the JVM not not neccessarily lost. Not
> being
> >> used that may be swapped out.
> >>
> >> Regards,
> >> Steffen
> >>
> >>
> >>
> >
> >
>
> ---------------------------------------------------------------------
> To start a new topic, e-mail: users@tomcat.apache.org
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
--
- xucai
Re: tomcat memory usage.
Posted by Rainer Jung <ra...@kippdata.de>.
Usually the term heap is used for the sum of the new space, one of the
two semi spaces (both usually around a couple of MB) and tenured. The
size of each of these can be viewed e.g. with jconsole, which comes with
your JVM.
Additional memory is used for perm (class data), which should generally
be in the reange of 10-60MB, depending on how many classes you have.
Further memory is needed for thread stacks, native libs and in Java 1.5
for class sharing meta data.
You can have a look at the native side of things by the Solaris command
pmap.
On Solaris you should not use top. Use prstat instead.
Does the gap stabilize after some time?
Regards,
Rainer
xu cai schrieb:
> hi Steffen,
>
> thanks for ur reply. I still have questions on that, see that in-line.
>
> On 11/21/06, Steffen Heil <li...@steffen-heil.de> wrote:
>>
>> Hi
>>
>> > Description :
>> > right after system(tomcat) is started, the "top" command show
>> > that tomcat process will use 210M memory, the heap size
>> > (using Jprofiler) is 58m/20m(total/used). there is a 150M gap
>> > between total process memory size and java heap size.
>>
>> There needs to be some memory for the JVM as well as your classes.
>> Furthermore GCs may keep two copies of the youngest generation part of
>> the
>> heap.
>
>
> Yes, some memory is needed for JVM and classes, also GC keep copies of
> young
> generation part of heap.
>
> Since the heap memory is managed well by GC, used heap memory grows from
> 20M
> to 160M gracefully and come back to 20M.
> But my question is why the total memory size of the process (tomcat) grows
> up from 230M to more than 520M. there is no significant memory grow in
> java
> heap, why the total memory can grow up almost 300M ?
>
>> So my questions are:
>> > 1, what is the difference between java process memory size
>> > and java heap size ? why can it be 150M in right after tomcat
>> > is started ?
>> > 2, why the gap between top can heap can grows from 150M to
>> > 320M, where does 170M more memory gone ?
>>
>> I assume it was needed in between.
>> However, memory allocated by the JVM not not neccessarily lost. Not being
>> used that may be swapped out.
>>
>> Regards,
>> Steffen
>>
>>
>>
>
>
---------------------------------------------------------------------
To start a new topic, e-mail: users@tomcat.apache.org
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: tomcat memory usage.
Posted by xu cai <je...@gmail.com>.
hi Steffen,
thanks for ur reply. I still have questions on that, see that in-line.
On 11/21/06, Steffen Heil <li...@steffen-heil.de> wrote:
>
> Hi
>
> > Description :
> > right after system(tomcat) is started, the "top" command show
> > that tomcat process will use 210M memory, the heap size
> > (using Jprofiler) is 58m/20m(total/used). there is a 150M gap
> > between total process memory size and java heap size.
>
> There needs to be some memory for the JVM as well as your classes.
> Furthermore GCs may keep two copies of the youngest generation part of the
> heap.
Yes, some memory is needed for JVM and classes, also GC keep copies of young
generation part of heap.
Since the heap memory is managed well by GC, used heap memory grows from 20M
to 160M gracefully and come back to 20M.
But my question is why the total memory size of the process (tomcat) grows
up from 230M to more than 520M. there is no significant memory grow in java
heap, why the total memory can grow up almost 300M ?
> So my questions are:
> > 1, what is the difference between java process memory size
> > and java heap size ? why can it be 150M in right after tomcat
> > is started ?
> > 2, why the gap between top can heap can grows from 150M to
> > 320M, where does 170M more memory gone ?
>
> I assume it was needed in between.
> However, memory allocated by the JVM not not neccessarily lost. Not being
> used that may be swapped out.
>
> Regards,
> Steffen
>
>
>
--
- xucai
RE: tomcat memory usage.
Posted by Steffen Heil <li...@steffen-heil.de>.
Hi
> Description :
> right after system(tomcat) is started, the "top" command show
> that tomcat process will use 210M memory, the heap size
> (using Jprofiler) is 58m/20m(total/used). there is a 150M gap
> between total process memory size and java heap size.
There needs to be some memory for the JVM as well as your classes.
Furthermore GCs may keep two copies of the youngest generation part of the
heap.
> So my questions are:
> 1, what is the difference between java process memory size
> and java heap size ? why can it be 150M in right after tomcat
> is started ?
> 2, why the gap between top can heap can grows from 150M to
> 320M, where does 170M more memory gone ?
I assume it was needed in between.
However, memory allocated by the JVM not not neccessarily lost. Not being
used that may be swapped out.
Regards,
Steffen