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Diffstat (limited to 'Examples/j_classflow_example.txt')
| -rw-r--r-- | Examples/j_classflow_example.txt | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/Examples/j_classflow_example.txt b/Examples/j_classflow_example.txt new file mode 100644 index 000000000000..b8a9b75000cd --- /dev/null +++ b/Examples/j_classflow_example.txt @@ -0,0 +1,89 @@ +Following are examples of j_classflow.d. + +This watches Java method entries and returns from all Java processes on the +system with hotspot provider support (1.6.0) and the flag +"+ExtendedDTraceProbes". eg, java -XX:+ExtendedDTraceProbes classfile + +Here we can see it run on Code/Java/Func_abc. + +# j_classflow.d Func_abc + C PID TIME(us) -- CLASS.METHOD + 0 311425 4789778117827 -> Func_abc.main + 0 311425 4789778117844 -> Func_abc.func_a + 0 311425 4789779120071 -> Func_abc.func_b + 0 311425 4789780130070 -> Func_abc.func_c + 0 311425 4789781140067 <- Func_abc.func_c + 0 311425 4789781140079 <- Func_abc.func_b + 0 311425 4789781140087 <- Func_abc.func_a + 0 311425 4789781140095 <- Func_abc.main +^C + +The first column, C gives us the CPU ID. + +The second column, TIME(us), gives us the time since boot in microseconds. + +The third column, PID gives us the Process ID. + +The fourth column, CLASS.METHOD gives us the Java class and method name. + +We can see that Func_abc.main called Func.abc.func_a, which in turn +called Func_abc.funcb etc. + +Here we can see an example of running it on java/io/BufferedOutputStream + +# j_classflow.d java/io/BufferedOutputStream + C PID TIME(us) -- CLASS.METHOD + 0 311461 4790094765413 -> java/io/BufferedOutputStream.<init> + 0 311461 4790094765459 <- java/io/BufferedOutputStream.<init> + 0 311461 4790094779559 -> java/io/BufferedOutputStream.<init> + 0 311461 4790094779595 <- java/io/BufferedOutputStream.<init> + 0 311461 4790094965883 -> java/io/BufferedOutputStream.write + 0 311461 4790094965913 <- java/io/BufferedOutputStream.write + 0 311461 4790094965926 -> java/io/BufferedOutputStream.flush + 0 311461 4790094965936 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790094966279 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790094966293 <- java/io/BufferedOutputStream.flush + 0 311461 4790094966588 -> java/io/BufferedOutputStream.write + 0 311461 4790094966602 <- java/io/BufferedOutputStream.write + 0 311461 4790094966610 -> java/io/BufferedOutputStream.flush + 0 311461 4790094966618 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790094966778 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790094966787 <- java/io/BufferedOutputStream.flush + 0 311461 4790094966811 -> java/io/BufferedOutputStream.flush + 0 311461 4790094966819 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790094966828 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790094966836 <- java/io/BufferedOutputStream.flush + 0 311461 4790095970345 -> java/io/BufferedOutputStream.write + 0 311461 4790095970372 <- java/io/BufferedOutputStream.write + 0 311461 4790095970382 -> java/io/BufferedOutputStream.flush + 0 311461 4790095970390 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790095970453 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790095970462 <- java/io/BufferedOutputStream.flush + 0 311461 4790095970737 -> java/io/BufferedOutputStream.write + 0 311461 4790095970751 <- java/io/BufferedOutputStream.write + 0 311461 4790095970759 -> java/io/BufferedOutputStream.flush + 0 311461 4790095970766 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790095970795 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790095970804 <- java/io/BufferedOutputStream.flush + 0 311461 4790095970828 -> java/io/BufferedOutputStream.flush + 0 311461 4790095970836 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790095970844 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790095970853 <- java/io/BufferedOutputStream.flush + 0 311461 4790096980348 -> java/io/BufferedOutputStream.write + 0 311461 4790096980373 <- java/io/BufferedOutputStream.write + 0 311461 4790096980383 -> java/io/BufferedOutputStream.flush + 0 311461 4790096980391 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790096980452 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790096980460 <- java/io/BufferedOutputStream.flush + 0 311461 4790096980735 -> java/io/BufferedOutputStream.write + 0 311461 4790096980749 <- java/io/BufferedOutputStream.write + 0 311461 4790096980757 -> java/io/BufferedOutputStream.flush + 0 311461 4790096980765 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790096980794 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790096980803 <- java/io/BufferedOutputStream.flush + 0 311461 4790096980826 -> java/io/BufferedOutputStream.flush + 0 311461 4790096980834 -> java/io/BufferedOutputStream.flushBuffer + 0 311461 4790096980843 <- java/io/BufferedOutputStream.flushBuffer + 0 311461 4790096980851 <- java/io/BufferedOutputStream.flush + + |