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73 lines
1.6 KiB
D
Executable File
73 lines
1.6 KiB
D
Executable File
#!/usr/sbin/dtrace -s
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/*
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* cpuwalk.d - Measure which CPUs a process runs on.
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* Written using DTrace (Solaris 10 3/05)
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*
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* This program is for multi-CPU servers, and can help identify if a process
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* is running on multiple CPUs concurrently or not.
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*
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* $Id: cpuwalk.d,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $
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*
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* USAGE: cpuwalk.d [duration]
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* eg,
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* cpuwalk.d 10 # sample for 10 seconds
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* cpuwalk.d # sample until Ctrl-C is hit
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*
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* FIELDS:
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* value CPU id
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* count Number of 1000 hz samples on this CPU
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*
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* COPYRIGHT: Copyright (c) 2005 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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* 22-Sep-2005 Brendan Gregg Created this.
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* 14-Feb-2006 " " Last update.
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*/
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#pragma D option quiet
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#pragma D option defaultargs
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inline int MAXCPUID = 1024;
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dtrace:::BEGIN
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{
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$1 ? printf("Sampling...\n") :
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printf("Sampling... Hit Ctrl-C to end.\n");
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seconds = 0;
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}
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profile:::profile-1000hz
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/pid/
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{
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@sample[pid, execname] = lquantize(cpu, 0, MAXCPUID, 1);
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}
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profile:::tick-1sec
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{
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seconds++;
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}
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profile:::tick-1sec
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/seconds == $1/
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{
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exit(0);
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}
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dtrace:::END
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{
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printa("\n PID: %-8d CMD: %s\n%@d", @sample);
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}
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