HouseMD is a interactive command-line tool for dianosing Java process in runtime. It's inspiration came from BTrace, but more easier to use.
- Display loaded classes information
- name
- source file(.class or .jar)
- classloaders
- Display invocation trace summary
- method full name and sign
- class loader of method declaring class
- total invoked times
- avg elapse millis
- Output invocation detail
- timestamp
- elapse millis
- call thread
- class name
- method name
- arguments
- result or exception
- Output invocation stack trace
- Awesome features you can provide by forking me
- JDK 6 +
> curl -Lk https://raw.github.com/zhongl/HouseMD/master/bin/install | bash
- Please try normal install on Window.
-
Click here download executable jar
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Run it as:
java -Xbootclasspath/a:$JAVA_HOME/lib/tools.jar -jar housemd-assembly-x.x.x.jar
Caution: In Mac OSX, the
-Xbootclasspathis no needed.
First all, type:
> housemd -h
A help infomation shows up like:
Usage: housemd [OPTIONS] pid
a runtime diagnosis tool of JVM.
Options:
-h, --help
show help infomation of this command.
-p, --port=[INT]
set console local socket server port number.
default: 54321
Parameters:
pid
id of process to be diagnosing.
Suppost your target pid is 1234 (you can use jps or ps get it), and then input:
> housemd 1234
After seen prompt housemd>, input help then you get help infomation like this:
housemd> help
quit terminate the process.
help display this infomation.
trace display or output infomation of method invocaton.
loaded display loaded classes information.
You can also input help loaded and get help infomation of loaded as blow:
housemd> help loaded
Usage: loaded [OPTIONS] name
display loaded classes information.
Options:
-h, --classloader-hierarchies
display classloader hierarchies of loaded class.
Parameters:
name
class name without package name.
| method full name | class loader | invoked | avg elapse|
TraceTarget.addOne(int) sun.misc.Launcher$AppClassLoader@1cde100 2 34ms
| date | time | elapse | thread name | method full name | arguemnt(s) |result or exception
2012-06-07 14:30:57 67ms [main] TraceTarget.addOne [0] 1
- The delimiter is one
white space, - method full name contains: package, class name and method name
Having fun!
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