|
как правильно память в JVM настраивать?
#36461963
Ссылка:
Ссылка на сообщение:
Ссылка с названием темы:
Ссылка на профиль пользователя:
|
Участник
Откуда: Москва > Melbourne
Сообщения: 3 331
|
|
есть Oracle AS (понимаю, что не совсем по теме, но JVM-таки от IBM) на AIX 6.1 с JDK build 1.4.2, J2RE 1.4.2 IBM AIX build ca142-20090307 (SR13)
время от времени (10-20 раз в день) в JVM возникает OOM, в некоторых случаях процесс падает, в некоторых продолжает жить
вывод от -verbose:gc примерно такой 1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
71.
72.
73.
<AF[42]: Allocation Failure. need 8388624 bytes, 165 ms since last AF>
<AF[42]: managing allocation failure, action=2 (1102473840/1610611200)>
<GC(58): GC cycle started Wed Feb 10 08:49:18 2010
<GC(58): freed 17552920 bytes, 69% free (1120026760/1610611200), in 2700 ms>
<GC(58): mark: 461 ms, sweep: 14 ms, compact: 2225 ms>
<GC(58): refs: soft 8 (age >= 32), weak 131, final 17, phantom 0>
<GC(58): moved 6029630 objects, 344134560 bytes, reason=1, used 264 more bytes>
<AF[42]: managing allocation failure, action=3 (1120026760/1610611200)>
<AF[42]: managing allocation failure, action=4 (1120026760/1610611200)>
<AF[42]: clearing all remaining soft refs>
<GC(59): GC cycle started Wed Feb 10 08:49:21 2010
<GC(59): freed 530728 bytes, 69% free (1120557488/1610611200), in 2230 ms>
<GC(59): mark: 342 ms, sweep: 13 ms, compact: 1875 ms>
<GC(59): refs: soft 579 (age >= 32), weak 6, final 93, phantom 0>
<GC(59): moved 2079813 objects, 115998504 bytes, reason=1, used 32 more bytes>
<AF[42]: managing allocation failure, action=6 (1120557488/1610611200)>
JVMDG217: Dump Handler is Processing OutOfMemory - Please Wait.
JVMDG315: JVM Requesting Heap dump file
...............................JVMDG318: Heap dump file written to /u01/oracle/product/ias/10.1.2/j2ee/home/hea
pdump974850.1265780963.phd
JVMDG303: JVM Requesting Java core file
JVMDG304: Java core file written to /u01/oracle/product/ias/10.1.2/j2ee/home/javacore974850.1265780986.txt
JVMDG274: Dump Handler has Processed OutOfMemory.
<AF[42]: Insufficient space in Javaheap to satisfy allocation request>
<AF[42]: completed in 47600 ms>
<AF[43]: Allocation Failure. need 1048592 bytes, 106817 ms since last AF>
<AF[43]: managing allocation failure, action=2 (878148240/1610611200)>
<GC(62): freeing class sun.reflect.GeneratedMethodAccessor6(b81bffa8)>
<GC(62): freeing class sun.reflect.GeneratedMethodAccessor48(b8133f98)>
<GC(62): unloaded and freed 2 classes>
<GC(62): GC cycle started Wed Feb 10 08:51:53 2010
<GC(62): freed 217787320 bytes, 68% free (1095935560/1610611200), in 816 ms>
<GC(62): mark: 753 ms, sweep: 63 ms, compact: 0 ms>
<GC(62): refs: soft 0 (age >= 32), weak 6880, final 360, phantom 0>
<AF[43]: completed in 817 ms>
<AF[44]: Allocation Failure. need 4194320 bytes, 88 ms since last AF>
<AF[44]: managing allocation failure, action=2 (1089909808/1610611200)>
<GC(63): GC cycle started Wed Feb 10 08:51:54 2010
<GC(63): freed 25646320 bytes, 69% free (1115556128/1610611200), in 3648 ms>
<GC(63): mark: 707 ms, sweep: 31 ms, compact: 2910 ms>
<GC(63): refs: soft 0 (age >= 32), weak 45, final 1, phantom 0>
<GC(63): moved 6828966 objects, 388635512 bytes, reason=16, used 18672848 more bytes>
<AF[44]: completed in 3660 ms>
<AF[45]: Allocation Failure. need 16777232 bytes, 412 ms since last AF>
<AF[45]: managing allocation failure, action=2 (1088818456/1610611200)>
<GC(64): GC cycle started Wed Feb 10 08:51:58 2010
<GC(64): freed 19870776 bytes, 68% free (1108689232/1610611200), in 2074 ms>
<GC(64): mark: 441 ms, sweep: 15 ms, compact: 1618 ms>
<GC(64): refs: soft 0 (age >= 32), weak 87, final 10, phantom 0>
<GC(64): moved 314797 objects, 18334728 bytes, reason=1, used 52504 more bytes>
<AF[45]: managing allocation failure, action=3 (1108689232/1610611200)>
<AF[45]: managing allocation failure, action=4 (1108689232/1610611200)>
<AF[45]: clearing all remaining soft refs>
<GC(65): GC cycle started Wed Feb 10 08:52:00 2010
<GC(65): freed 439288 bytes, 68% free (1109128520/1610611200), in 2068 ms>
<GC(65): mark: 452 ms, sweep: 16 ms, compact: 1600 ms>
<GC(65): refs: soft 533 (age >= 32), weak 0, final 37, phantom 0>
<GC(65): moved 561139 objects, 31769704 bytes, reason=1, used 24664 more bytes>
<AF[45]: managing allocation failure, action=6 (1109128520/1610611200)>
JVMDG217: Dump Handler is Processing OutOfMemory - Please Wait.
JVMDG315: JVM Requesting Heap dump file
...............................JVMDG318: Heap dump file written to /u01/oracle/product/ias/10.1.2/j2ee/home/hea
pdump974850.1265781122.phd
JVMDG303: JVM Requesting Java core file
JVMDG304: Java core file written to /u01/oracle/product/ias/10.1.2/j2ee/home/javacore974850.1265781156.txt
JVMDG274: Dump Handler has Processed OutOfMemory.
<AF[45]: Insufficient space in Javaheap to satisfy allocation request>
<AF[45]: completed in 57756 ms>
т.е. насколько я понимаю памяти свободной в хипе еще навалом, а выделить все равно не может. Как бороться с ситуацией? параметры запуска относящиеся к памяти JVM такие: -Xms1536m -Xmx1536m -Xgcpolicy:subpool -verbose:gc -Xk9000 |
|
|
