1235368Sgnn#!/usr/sbin/dtrace -Zs 2235368Sgnn/* 3235368Sgnn * j_events.d - count Java events using DTrace. 4235368Sgnn * Written for the Java hotspot DTrace provider. 5235368Sgnn * 6235368Sgnn * $Id: j_events.d 19 2007-09-12 07:47:59Z brendan $ 7235368Sgnn * 8235368Sgnn * This traces activity from all Java processes on the system with hotspot 9235368Sgnn * provider support (1.6.0). Some events such as method calls are only 10235368Sgnn * visible when using the flag "+ExtendedDTraceProbes". eg, 11235368Sgnn * java -XX:+ExtendedDTraceProbes classfile 12235368Sgnn * 13235368Sgnn * USAGE: j_events.d # hit Ctrl-C to end 14235368Sgnn * 15235368Sgnn * FIELDS: 16235368Sgnn * PID Process ID 17235368Sgnn * EVENT Event name (DTrace probe name) 18235368Sgnn * COUNT Number of calls during sample 19235368Sgnn * 20235368Sgnn * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 21235368Sgnn * 22235368Sgnn * CDDL HEADER START 23235368Sgnn * 24235368Sgnn * The contents of this file are subject to the terms of the 25235368Sgnn * Common Development and Distribution License, Version 1.0 only 26235368Sgnn * (the "License"). You may not use this file except in compliance 27235368Sgnn * with the License. 28235368Sgnn * 29235368Sgnn * You can obtain a copy of the license at Docs/cddl1.txt 30235368Sgnn * or http://www.opensolaris.org/os/licensing. 31235368Sgnn * See the License for the specific language governing permissions 32235368Sgnn * and limitations under the License. 33235368Sgnn * 34235368Sgnn * CDDL HEADER END 35235368Sgnn * 36235368Sgnn * 09-Sep-2007 Brendan Gregg Created this. 37235368Sgnn */ 38235368Sgnn 39235368Sgnn#pragma D option quiet 40235368Sgnn 41235368Sgnndtrace:::BEGIN 42235368Sgnn{ 43235368Sgnn printf("Tracing... Hit Ctrl-C to end.\n"); 44235368Sgnn} 45235368Sgnn 46235368Sgnn/* this matches both hotspot and hotspot_jni providers */ 47235368Sgnnhotspot*::: 48235368Sgnn{ 49235368Sgnn @calls[pid, probename] = count(); 50235368Sgnn} 51235368Sgnn 52235368Sgnndtrace:::END 53235368Sgnn{ 54235368Sgnn printf(" %6s %-36s %8s\n", "PID", "EVENT", "COUNT"); 55235368Sgnn printa(" %6d %-36s %@8d\n", @calls); 56235368Sgnn} 57