APAR status
Closed as program error.
Error description
Error Message: Running Java 5 or Java 6 on 64-bit platforms, the JVM's performance is very bad. Profiling shows that most of the CPU time is spent in the interpreter (j9vm26.dll or libj9vm26.so) rather than JIT-compiled code. If verbose JIT tracing is enabled via the -Xjit:verbose option, messages like this will be printed: . <WARNING: JIT CACHES FULL> . Stack Trace: N/A .
Local fix
It may be possible to work around this issue using the unsupported option -Xjit:codeTotal=131072.
Problem summary
The problem is caused when the JIT code cache becomes full and all loaded classes are in use (and hence cannot be unloaded to free up memory). This tends to occur only on 64-bit platforms due to the larger volume of cached native code.
Problem conclusion
This defect will be fixed in: 6.0.0 SR8 5.0.0 SR12 . The JIT compiler has been updated to use a different code cache size threshold for 64-bit platforms. The code cache is grown dynamically so applications that do not require the space will not be impacted. . To obtain the fix: Install build 20100402 or later
Temporary fix
Comments
APAR Information
APAR number
IZ73637
Reported component name
JIT
Reported component ID
620700124
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2010-04-01
Closed date
2010-05-12
Last modified date
2010-07-22
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
JIT
Fixed component ID
620700124
Applicable component levels
R600 PSN
UP
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Document Information
Modified date:
22 July 2010