| Unsupported segment type 254 at position 366,014,124 [message #2358] |
Tue, 15 July 2008 14:18  |
Eclipse User |
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Originally posted by: christian.mallwitz.xbridge.com
I'm using MAT 0.7.0.20080613 on Windows.
My Windows JDK is:
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)
My "heap dump" environment is:
SunOS 5.9 Generic_122300-25 sun4u sparc SUNW,Ultra-60
java version "1.5.0_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_05-b05)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_05-b05, mixed mode)
I have a head dump generated using
jmap -J-Djava.io.tmpdir=/www d64 -heap:format=b {pid}
Please note the -J-Djava.io.tmpdir=/www - we needed that in order to make
jmap create temp files somewhere other than /var/tmp as it was to small.
Jmap finished without error and the heap.bin file doesn't seem to be
corrupted (e.g. it doesn't have 0x00 only after a while)
The 366,014,124th byte into the heap dump is indeed 0xFE (254). There are
more none 0x00 bytes after that.
If you could point me to other heap dump processing tools I would have
them have a go at my heap dump to check if they have the same problem.
I can make the dump available on the web if necessary (47 MB gzipped).
Thanks
Christian
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| Re: Unsupported segment type 254 at position 366,014,124 [message #2418 is a reply to message #2389] |
Thu, 17 July 2008 13:10  |
| Eclipse User |
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Originally posted by: christian.mallwitz.xbridge.com
I checked using JDK 6 jhat and it gives me the same error message.
As far as doing a dump using JDK 6: Our system runs on Java 5. Do you
think I can install a JDK 6 along it and use the JDK 6 jmap to safely
create a dump of a JDK 5 VM? Or did you mean to run the VM to be
heap-dumped using JDK 6?
Thanks
Christian
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