java - jmap supports ascii format for heap dump and binary dump format -


i use jmap dump heap memeory

jmap -dump:format=b,file=test.hprof 22035

as far know, heap dump ascii format exists. execute below command

jmap -dump:format=a,file=test.hprof 22035

jmap usage printed.

ascii format doesn't exist?

and know heap dump binary format documentation. googling.. there no answer, no documenation.

here snippest of binary format file. enter image description here

there no text format, only:

-dump:<dump-options> dump java heap in hprof binary format                      format=b     binary format

this makes sense, dumping memory of jvm in text format take lots of gib... file can read heap dump analyzers eclipse mat or jprofiler.

see also


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