1*e137d3e0Schristos #!/usr/sbin/dtrace -Zs 2*e137d3e0Schristos /* 3*e137d3e0Schristos * j_events.d - count Java events using DTrace. 4*e137d3e0Schristos * Written for the Java hotspot DTrace provider. 5*e137d3e0Schristos * 6*e137d3e0Schristos * $Id: j_events.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ 7*e137d3e0Schristos * 8*e137d3e0Schristos * This traces activity from all Java processes on the system with hotspot 9*e137d3e0Schristos * provider support (1.6.0). Some events such as method calls are only 10*e137d3e0Schristos * visible when using the flag "+ExtendedDTraceProbes". eg, 11*e137d3e0Schristos * java -XX:+ExtendedDTraceProbes classfile 12*e137d3e0Schristos * 13*e137d3e0Schristos * USAGE: j_events.d # hit Ctrl-C to end 14*e137d3e0Schristos * 15*e137d3e0Schristos * FIELDS: 16*e137d3e0Schristos * PID Process ID 17*e137d3e0Schristos * EVENT Event name (DTrace probe name) 18*e137d3e0Schristos * COUNT Number of calls during sample 19*e137d3e0Schristos * 20*e137d3e0Schristos * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 21*e137d3e0Schristos * 22*e137d3e0Schristos * CDDL HEADER START 23*e137d3e0Schristos * 24*e137d3e0Schristos * The contents of this file are subject to the terms of the 25*e137d3e0Schristos * Common Development and Distribution License, Version 1.0 only 26*e137d3e0Schristos * (the "License"). You may not use this file except in compliance 27*e137d3e0Schristos * with the License. 28*e137d3e0Schristos * 29*e137d3e0Schristos * You can obtain a copy of the license at Docs/cddl1.txt 30*e137d3e0Schristos * or http://www.opensolaris.org/os/licensing. 31*e137d3e0Schristos * See the License for the specific language governing permissions 32*e137d3e0Schristos * and limitations under the License. 33*e137d3e0Schristos * 34*e137d3e0Schristos * CDDL HEADER END 35*e137d3e0Schristos * 36*e137d3e0Schristos * 09-Sep-2007 Brendan Gregg Created this. 37*e137d3e0Schristos */ 38*e137d3e0Schristos 39*e137d3e0Schristos #pragma D option quiet 40*e137d3e0Schristos 41*e137d3e0Schristos dtrace:::BEGIN 42*e137d3e0Schristos { 43*e137d3e0Schristos printf("Tracing... Hit Ctrl-C to end.\n"); 44*e137d3e0Schristos } 45*e137d3e0Schristos 46*e137d3e0Schristos /* this matches both hotspot and hotspot_jni providers */ 47*e137d3e0Schristos hotspot*::: 48*e137d3e0Schristos { 49*e137d3e0Schristos @calls[pid, probename] = count(); 50*e137d3e0Schristos } 51*e137d3e0Schristos 52*e137d3e0Schristos dtrace:::END 53*e137d3e0Schristos { 54*e137d3e0Schristos printf(" %6s %-36s %8s\n", "PID", "EVENT", "COUNT"); 55*e137d3e0Schristos printa(" %6d %-36s %@8d\n", @calls); 56*e137d3e0Schristos } 57