68 lines
1.9 KiB
D
Executable File
68 lines
1.9 KiB
D
Executable File
#!/usr/sbin/dtrace -s
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/*
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* priclass.d - priority distribution by scheduling class.
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* Written using DTrace (Solaris 10 3/05)
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*
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* This is a simple DTrace script that samples at 1000 Hz the current
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* thread's scheduling class and priority. A distribution plot is printed.
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*
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* With priorities, the higher the priority the better chance the thread
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* has of being scheduled.
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*
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* This idea came from the script /usr/demo/dtrace/pri.d, which
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* produces similar output for priority changes, not samples.
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*
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* $Id: priclass.d 3 2007-08-01 10:50:08Z brendan $
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*
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* USAGE: priclass.d # hit Ctrl-C to end sampling
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*
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* FIELDS:
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* value process priority
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* count number of samples of at least this priority
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*
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* Also printed is the scheduling class,
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*
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* TS time sharing
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* IA interactive
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* RT real time
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* SYS system
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* FSS fair share schedular
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*
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* BASED ON: /usr/demo/dtrace/pri.d
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*
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* SEE ALSO: DTrace Guide "profile Provider" chapter (docs.sun.com)
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* dispadmin(1M)
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*
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* PORTIONS: Copyright (c) 2006 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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* 12-Feb-2006 Brendan Gregg Created this.
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* 22-Apr-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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@count[stringof(curlwpsinfo->pr_clname)]
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= lquantize(curlwpsinfo->pr_pri, 0, 170, 10);
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}
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