Use Pmap to view the process memory execution commands using PMAP to view the memory usage usage of a process (not Java), the command format:PMAP Process ID Demo Sample Description example execution:Pmap 12358 Display Results For example (more content, divided into a few diagram description): Content Start part
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, in the first column. Memory block start address the second column. Occupies the memory size of the third column, the Memory permission fourth column. The memory name. Anon represents the dynamically allocated memory, and the stack represents the last line of stack memory. The total memory size, note that this is the virtual memory size, the amount of physical memory occupied by the top view
Use Jmap to view Java Process object Usage execution commands use Jmap to see how many instances of each object in a Java process, and how much memory is being consumed. Command format:Jmap-histoThe process ID demonstrates a sample description, such as execution:Jmap-histo 12538Show results for example (more content, divided into several diagrams): Content Start section
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Medium: First column, ordinal. Meaningless second column, number of object instances in the third column, the object instance occupies the total amount of memory. Units: Bytes column Fourth, object instance name last line, total number of instances and total memory consumption
Also, part of the Demo sample description (not yet clear, perhaps supplemented): [C. B [I,[j,[l, using Jstat to view Java memory distribution and recycling, see this post directly: http://blog.csdn.net/zlzlei/article/details/46471627
Add a blog that finds a nice jmap,jstat such as Java Analytics tools. For example, the following: http://blog.csdn.net/fenglibing/article/details/6411999
Analysis Java Program memory summary under Linux
