53 lines
1.3 KiB
D
Executable File
53 lines
1.3 KiB
D
Executable File
#!/usr/sbin/dtrace -s
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/*
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* dispqlen.d - dispatcher queue length by CPU.
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* Written using DTrace (Solaris 10 3/05).
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*
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* $Id: dispqlen.d 3 2007-08-01 10:50:08Z brendan $
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*
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* USAGE: dispqlen.d # hit Ctrl-C to end sample
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*
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* NOTES: The dispatcher queue length is an indication of CPU saturation.
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* It is not an indicatior of utilisation - the CPUs may or may not be
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* utilised when the dispatcher queue reports a length of zero.
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*
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* SEE ALSO: uptime(1M)
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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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* 27-Jun-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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dtrace:::BEGIN
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{
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printf("Sampling... Hit Ctrl-C to end.\n");
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}
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profile:::profile-1000hz
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{
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@queue[cpu] =
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lquantize(curthread->t_cpu->cpu_disp->disp_nrunnable, 0, 64, 1);
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}
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dtrace:::END
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{
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printa(" CPU %d%@d\n", @queue);
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}
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