diff options
Diffstat (limited to 'Examples/j_syscalls_example.txt')
| -rw-r--r-- | Examples/j_syscalls_example.txt | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/Examples/j_syscalls_example.txt b/Examples/j_syscalls_example.txt new file mode 100644 index 000000000000..911d4b0ec5c5 --- /dev/null +++ b/Examples/j_syscalls_example.txt @@ -0,0 +1,165 @@ +The following are examples of j_syscalls.d. + +This is a simple script to count executed Java methods and system calls. +Here it traces an example program, Code/Java/Func_abc. + +# j_syscalls.d -c 'java -XX:+ExtendedDTraceProbes Func_abc' +Tracing... Hit Ctrl-C to end. +Function A +Function B +Function C + PID TYPE NAME COUNT + 311536 method Func_abc.func_a 1 + 311536 method Func_abc.func_b 1 + 311536 method Func_abc.func_c 1 + 311536 method Func_abc.main 1 + 311536 method java/io/BufferedInputStream.<clinit> 1 + 311536 method java/io/BufferedReader.<clinit> 1 + 311536 method java/io/BufferedReader.close 1 + 311536 method java/io/BufferedWriter.<clinit> 1 + 311536 method java/io/Console$1$1.<init> 1 + 311536 method java/io/Console$1$1.run 1 + 311536 method java/io/Console$1.<init> 1 + 311536 method java/io/Console$1.consoleRestoreHook 1 + 311536 method java/io/Console.<clinit> 1 + 311536 method java/io/Console.access$600 1 + 311536 method java/io/DataInputStream.<init> 1 + 311536 method java/io/DataInputStream.readFully 1 + 311536 method java/io/DeleteOnExitHook.<clinit> 1 + 311536 method java/io/DeleteOnExitHook.<init> 1 + 311536 method java/io/DeleteOnExitHook.hook 1 + 311536 method java/io/DeleteOnExitHook.run 1 +[... 900 lines truncated ...] + 311536 method java/io/ExpiringCache.get 18 + 311536 method java/lang/Class.desiredAssertionStatus 18 + 311536 method java/lang/Class.desiredAssertionStatus0 18 + 311536 method java/lang/ClassLoader.findLoadedClass 18 + 311536 method java/lang/ClassLoader.findLoadedClass0 18 + 311536 method java/io/BufferedReader.ensureOpen 19 + 311536 method java/lang/System.currentTimeMillis 19 + 311536 method java/nio/Buffer.limit 19 + 311536 method java/util/Locale.<init> 19 + 311536 method java/util/Locale.createSingleton 19 + 311536 method java/util/concurrent/ConcurrentHashMap$Segment.put 19 + 311536 method java/util/concurrent/ConcurrentHashMap.put 19 + 311536 method java/util/concurrent/locks/AbstractQueuedSynchronizer.compareAndSetState 19 + 311536 method java/util/concurrent/locks/AbstractQueuedSynchronizer.release 19 + 311536 method java/util/concurrent/locks/AbstractQueuedSynchronizer.setState 19 + 311536 method java/util/concurrent/locks/ReentrantLock$NonfairSync.lock 19 + 311536 method java/util/concurrent/locks/ReentrantLock$Sync.tryRelease 19 + 311536 method java/util/concurrent/locks/ReentrantLock.lock 19 + 311536 method java/util/concurrent/locks/ReentrantLock.unlock 19 + 311536 method java/io/ObjectStreamField.<init> 20 + 311536 method java/nio/ByteBuffer.array 20 + 311536 method java/util/AbstractList.<init> 20 + 311536 method java/util/BitSet.get 20 + 311536 method java/util/concurrent/ConcurrentHashMap.hash 20 + 311536 method java/util/concurrent/ConcurrentHashMap.segmentFor 20 + 311536 method sun/misc/VM.isBooted 20 + 311536 syscall memcntl 20 + 311536 method java/io/File.getName 21 + 311536 method java/io/UnixFileSystem.getBooleanAttributes 21 + 311536 method java/io/UnixFileSystem.getBooleanAttributes0 21 + 311536 method java/lang/StringBuffer.append 21 + 311536 method java/nio/charset/Charset.atBugLevel 21 + 311536 method java/util/concurrent/ConcurrentHashMap$HashEntry.newArray 22 + 311536 method sun/misc/Unsafe.compareAndSwapInt 22 + 311536 method java/util/HashMap.<init> 23 + 311536 method java/util/concurrent/ConcurrentHashMap$HashEntry.<init> 23 + 311536 syscall stat64 23 + 311536 method java/nio/charset/CoderResult.isUnderflow 24 + 311536 method java/util/AbstractMap.<init> 24 + 311536 method java/util/Vector.elementAt 24 + 311536 syscall munmap 24 + 311536 method java/lang/Class.getClassLoader 25 + 311536 syscall lwp_sigmask 25 + 311536 syscall sigaction 25 + 311536 method java/util/AbstractCollection.<init> 26 + 311536 method java/util/ArrayList.add 26 + 311536 method java/util/ArrayList.ensureCapacity 26 + 311536 method java/lang/ClassLoader.loadClass 27 + 311536 method java/net/URL.<init> 27 + 311536 method java/lang/ClassLoader.check 28 + 311536 method java/lang/ClassLoader.checkName 28 + 311536 method java/lang/ref/Reference.<init> 28 + 311536 method java/lang/String.endsWith 29 + 311536 method sun/misc/VM.allowArraySyntax 29 + 311536 method java/io/ExpiringCache.entryFor 30 + 311536 method java/io/UnixFileSystem.resolve 30 + 311536 method java/util/HashMap$Entry.<init> 30 + 311536 method java/util/LinkedHashMap.get 30 + 311536 syscall priocntlsys 30 + 311536 method java/util/HashMap.put 33 + 311536 method java/util/Vector.<init> 33 + 311536 method java/io/UnixFileSystem.normalize 34 + 311536 method java/lang/Class.getClassLoader0 34 + 311536 method java/lang/String.toLowerCase 34 + 311536 method sun/security/action/GetPropertyAction.run 34 + 311536 method java/nio/CharBuffer.arrayOffset 36 + 311536 method java/util/HashMap.getEntry 36 + 311536 method java/io/File.<init> 37 + 311536 method java/io/UnixFileSystem.prefixLength 37 + 311536 method java/io/BufferedReader.readLine 38 + 311536 method java/util/concurrent/locks/AbstractOwnableSynchronizer.setExclusiveOwnerThread 38 + 311536 syscall resolvepath 38 + 311536 method java/lang/CharacterDataLatin1.toLowerCase 41 + 311536 method java/lang/CharacterDataLatin1.getProperties 43 + 311536 method java/security/AccessController.doPrivileged 43 + 311536 method java/util/Vector.size 43 + 311536 method java/nio/Buffer.position 44 + 311536 method java/nio/ByteBuffer.arrayOffset 44 + 311536 method java/lang/System.getProperty 48 + 311536 method java/util/Properties.getProperty 50 + 311536 method java/util/BitSet.expandTo 51 + 311536 method java/util/BitSet.set 51 + 311536 syscall pollsys 55 + 311536 method java/lang/System.checkKey 56 + 311536 method java/lang/Thread.currentThread 57 + 311536 method java/util/Hashtable$Entry.<init> 57 + 311536 method java/util/Hashtable.get 59 + 311536 method java/util/Hashtable.put 63 + 311536 method java/util/BitSet.checkInvariants 71 + 311536 method java/util/BitSet.wordIndex 72 + 311536 method java/lang/StringBuilder.<init> 73 + 311536 method java/lang/StringBuilder.toString 73 + 311536 method java/lang/AbstractStringBuilder.expandCapacity 81 + 311536 method java/util/HashMap.hash 81 + 311536 method java/util/HashMap.indexFor 81 + 311536 method java/lang/AbstractStringBuilder.<init> 82 + 311536 method java/lang/Character.toLowerCase 82 + 311536 method java/lang/String.startsWith 83 + 311536 method java/util/Arrays.copyOf 87 + 311536 method java/lang/String.lastIndexOf 90 + 311536 method java/lang/String.substring 94 + 311536 syscall brk 102 + 311536 syscall ioctl 103 + 311536 method java/util/Arrays.copyOfRange 107 + 311536 syscall mmap 127 + 311536 syscall open 129 + 311536 syscall close 133 + 311536 method java/lang/String.getChars 156 + 311536 method java/lang/System.getSecurityManager 174 + 311536 method java/lang/String.<init> 175 + 311536 syscall xstat 188 + 311536 method java/lang/String.equals 202 + 311536 method java/lang/Math.min 208 + 311536 method java/lang/String.hashCode 213 + 311536 syscall lwp_exit 291 + 311536 method java/lang/String.indexOf 302 + 311536 method java/lang/System.arraycopy 360 + 311536 method java/lang/StringBuilder.append 545 + 311536 method java/lang/AbstractStringBuilder.append 561 + 311536 syscall llseek 664 + 311536 syscall read 668 + 311536 method java/lang/Object.<init> 823 + 311536 method java/lang/String.charAt 1987 + +While tracing there were numerous system calls made, including 668 reads()'s, +and 664 llseek()'s. Many Java methods were also called, with 1987 +java/lang/String.charAt being the most of a particular kind. + +This script can provide an insight to how an application is interacting +with the system, by providing both application method calls and +system calls in the same output. + + |