arthas/tutorials/katacoda/command-heapdump-en/heapdump.md

dump java heap in hprof binary format, like jmap.

Usage

Dump to file

heapdump /tmp/dump.hprof{{execute T2}}

[arthas@58205]$ heapdump /tmp/dump.hprof
Dumping heap to /tmp/dump.hprof...
Heap dump file created

Dump only live objects

heapdump --live /tmp/dump.hprof{{execute T2}}

[arthas@58205]$ heapdump --live /tmp/dump.hprof
Dumping heap to /tmp/dump.hprof...
Heap dump file created

Dump to tmp file

heapdump{{execute T2}}

[arthas@58205]$ heapdump
Dumping heap to /var/folders/my/wy7c9w9j5732xbkcyt1mb4g40000gp/T/heapdump2019-09-03-16-385121018449645518991.hprof...
Heap dump file created