57 lines
1.5 KiB
D
57 lines
1.5 KiB
D
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#!/usr/sbin/dtrace -Zs
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/*
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* j_events.d - count Java events using DTrace.
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* Written for the Java hotspot DTrace provider.
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*
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* $Id: j_events.d 19 2007-09-12 07:47:59Z brendan $
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*
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* This traces activity from all Java processes on the system with hotspot
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* provider support (1.6.0). Some events such as method calls are only
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* visible when using the flag "+ExtendedDTraceProbes". eg,
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* java -XX:+ExtendedDTraceProbes classfile
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*
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* USAGE: j_events.d # hit Ctrl-C to end
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*
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* FIELDS:
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* PID Process ID
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* EVENT Event name (DTrace probe name)
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* COUNT Number of calls during sample
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*
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* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
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*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at Docs/cddl1.txt
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* CDDL HEADER END
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*
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* 09-Sep-2007 Brendan Gregg Created this.
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*/
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#pragma D option quiet
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dtrace:::BEGIN
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{
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printf("Tracing... Hit Ctrl-C to end.\n");
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}
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/* this matches both hotspot and hotspot_jni providers */
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hotspot*:::
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{
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@calls[pid, probename] = count();
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}
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dtrace:::END
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{
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printf(" %6s %-36s %8s\n", "PID", "EVENT", "COUNT");
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printa(" %6d %-36s %@8d\n", @calls);
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}
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