Total method time in Java VisualVM

java profiling visualvm
kpozin picture kpozin · Dec 12, 2009 · Viewed 27.7k times · Source

In Java VisualVM, is there any way to display total method time, rather than "self time"? (The latter is not particularly useful, since it doesn't tell you anything about how much time methods actually take to run.)

If not, is there any standalone free Java profiler that does calculate total method time?

Answer

Joseph Cottam picture Joseph Cottam · Dec 13, 2010

Looking at the trace data in a "snapshot" view allows you to see the total as well as the self time.

Press the "snapshot" button that appears about the table of results. This will create a new tab that contains a "Call Tree" view which breaks down the self vs. total time. The "combined" view also provides this information, but splits the screen space with a "Hot Spots" view that is similar to the standard profiling view.

Snapshots can be created from either standard "Profiler" or "Sampler" data. However, "Profiler" snapshots can only be created before the application is closed, while "Sampler" ones can be created at any time.

(The above information is based on VisualVM 1.3.1)

Related questions

Why won't the VisualVM Profiler profile my application?

I've created a simple 1 file java application that iterates through a loop, calls some functions, allocates some memory, adds some numbers, etc. I run that application via eclipse's Run As->Java Application. The running application shows up in Java …

Read More
How to memory profile in Java?

I'm still learning the ropes of Java so sorry if there's a obvious answer to this. I have a program that is taking a ton of memory and I want to figure a way to reduce its usage, but after …

Read More
VisualVM unable to sampler memory

I have a tomcat instance with the JMXRemote parameter configured. The local VisualVM is able to get a sampler on CPU, however, not for Memory. The memory button is grayed out with a summary saying: "Memory sampling: Not available. Cannot …

Read More