https://issues.apache.org/bugzilla/show_bug.cgi?id=45765
Summary: Heap size is growing
Product: Tomcat 6
Version: 6.0.16
Platform: HP
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
I'm running Tomcat 6.0.16 on CentoOS 5, linked with native library, with
-security flag. I deployed a Servelt, which on invocation executes an RMI call
to a remote RMI server. Tomcat configured with max heap size of 2G
After short time of running under heavy load, the memory consumption reported
by top is close to 2G. jmap output is:
Attaching to process ID 20248, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 1.6.0-b105
using thread-local object allocation.
Parallel GC with 4 thread(s)
Heap Configuration:
MinHeapFreeRatio = 40
MaxHeapFreeRatio = 70
MaxHeapSize = 2147483648 (2048.0MB)
NewSize = 1048576 (1.0MB)
MaxNewSize = 4294901760 (4095.9375MB)
OldSize = 4194304 (4.0MB)
NewRatio = 2
SurvivorRatio = 8
PermSize = 16777216 (16.0MB)
MaxPermSize = 268435456 (256.0MB)
Heap Usage:
PS Young Generation
Eden Space:
capacity = 582221824 (555.25MB)
used = 0 (0.0MB)
free = 582221824 (555.25MB)
0.0% used
>From Space:
capacity = 48103424 (45.875MB)
used = 48079216 (45.85191345214844MB)
free = 24208 (0.0230865478515625MB)
99.9496751000511% used
To Space:
capacity = 69402624 (66.1875MB)
used = 0 (0.0MB)
free = 69402624 (66.1875MB)
0.0% used
PS Old Generation
capacity = 1431699456 (1365.375MB)
used = 1424597528 (1358.6020736694336MB)
free = 7101928 (6.772926330566406MB)
99.50395119798104% used
PS Perm Generation
capacity = 35782656 (34.125MB)
used = 28493056 (27.173095703125MB)
free = 7289600 (6.951904296875MB)
79.62811927655677% used
I've dump a file using jmap, and asked MemoryAnalyzer (www.eclipse.org/mat) to
take a look. This tool reported that an instance of java.security.Policy
retained 77.7% of the heap (552,569,816 bytes). Looks like a leak...
I will try to run without SecurityManager, and see whether this is impacting
the results.
Barak.
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