What is Hprof file in Java?

HPROF is a dynamically-linked native library that uses JVM TI and writes out profiling information either to a file descriptor or to a socket in ascii or binary format. This information can be further processed by a profiler front-end tool or dumped to a file.

How do I open an Hprof file in Java?

If you have a heap dump file saved on your local system, you can open the file in Java VisualVM by choosing File > Load from the main menu. Java VisualVM can open heap dumps saved in the . hprof file format. When you open a saved heap dump, the heap dump opens as a tab in the main window.

Is it OK to delete Hprof files?

HPROF is a binary heap dump format originally supported by J2SE. You can delete it.

How do I Analyse Hprof files?

You can use JHAT, The Java Heap Analysis Tool provided by default with the JDK. It’s command line but starts a web server/browser you use to examine the memory. Not the most user friendly, but at least it’s already installed most places you’ll go. A very useful view is the “heap histogram” link at the very bottom.

How do I convert a Hprof file?

2 Answers

Press WINKEY + R and type in cmd.
Type in: cd “C:\android-sdk\platform-tools” (or whichever directory contains your Android sdk)
Assuming you have your Dalvik file on the Desktop (I’m just guessing the directory), type in:
This will generate the standard format HPROF file that you can use called 4mat.hprof.

What is the use of Hprof file?

HPROF is a demonstration profiler shipped with the IBM® SDK that uses the JVMTI to collect and record information about Java™ execution. You can use HPROF to work out which parts of a program are using the most memory or processor time. When you run Java with HPROF, a file is created when the program ends.

How do I collect Hprof?

You have to start the Java process with the correct arguments, which vary a little depending on the JVM version. Then, send a QUIT signal to the process to generate a new file. The output is normally generated when the VM exits, although this can be disabled by setting the “dump on exit” option to “n” (doe=n).

Is it safe to delete the memory DMP file?

You can delete these . dmp files to free up space, which is a good idea because they may be very large in size — if your computer has blue-screened, you may have a MEMORY. DMP file of 800 MB or more taking up space on your system drive. Windows helps you automatically delete these files.