59 lines
1.5 KiB
D
Executable File
59 lines
1.5 KiB
D
Executable File
#!/usr/sbin/dtrace -Zs
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/*
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* j_who.d - trace Java calls by process using DTrace.
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* Written for the Java hotspot DTrace provider.
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*
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* $Id: j_who.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).
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*
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* USAGE: j_who.d # hit Ctrl-C to end
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*
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* FIELDS:
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* PID Process ID of Java
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* UID User ID of the owner
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* CALLS Number of calls made (a measure of activity)
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* ARGS Process name and arguments
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*
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* The argument list is truncated at 55 characters (up to 80 is easily
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* available). To easily read the full argument list, use other system tools;
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* on Solaris use "pargs PID".
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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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hotspot*:::Call*-entry
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{
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@calls[pid, uid, curpsinfo->pr_psargs] = count();
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}
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dtrace:::END
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{
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printf(" %6s %6s %6s %-55s\n", "PID", "UID", "CALLS", "ARGS");
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printa(" %6d %6d %@6d %-55.55s\n", @calls);
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}
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