jmap可以生成java应用程序的堆快照和对象的统计信息
jmap -histo 2892 >/tmp/2892.txt
jmap可得到应用程序的当前堆快照
[bigdata@iZuf6j6c7vo33i9lxbvqjaZ ~]$ jmap -dump:format=b,file=/tmp/2892.hprof 2892
Dumping heap to /tmp/2892.hprof ...
Heap dump file created
jmap可以生成java应用程序的堆快照和对象的统计信息
jmap -histo 2892 >/tmp/2892.txt
jmap可得到应用程序的当前堆快照
[bigdata@iZuf6j6c7vo33i9lxbvqjaZ ~]$ jmap -dump:format=b,file=/tmp/2892.hprof 2892
Dumping heap to /tmp/2892.hprof ...
Heap dump file created