mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-25 11:37:56 +00:00
73 lines
2.4 KiB
Plaintext
Executable File
73 lines
2.4 KiB
Plaintext
Executable File
#!/usr/sbin/dtrace -s
|
|
/*-
|
|
* Copyright 2014 John-Mark Gurney.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
#pragma D option quiet
|
|
|
|
/* from http://www.mail-archive.com/dtrace-discuss@opensolaris.org/msg03755.html */
|
|
#pragma D option aggsize=8m
|
|
#pragma D option bufsize=16m
|
|
#pragma D option dynvarsize=32m
|
|
/*
|
|
#pragma D option aggrate=0
|
|
#pragma D option cleanrate=50Hz
|
|
*/
|
|
|
|
dtrace:::BEGIN
|
|
{
|
|
printf("Tracing... Hit Ctrl-C to end.\n");
|
|
dstart = timestamp;
|
|
}
|
|
|
|
io:::start
|
|
{
|
|
start_time[arg0] = timestamp;
|
|
}
|
|
|
|
io:::done
|
|
/this->start = start_time[arg0]/
|
|
{
|
|
this->delta = (timestamp - this->start) / 1000;
|
|
@q[args[1]->device_name, args[1]->unit_number] =
|
|
lquantize(this->delta, 4000, 80000, 4000);
|
|
@max[args[1]->device_name, args[1]->unit_number] = max(this->delta);
|
|
@avg[args[1]->device_name, args[1]->unit_number] = avg(this->delta);
|
|
@stddev[args[1]->device_name, args[1]->unit_number] = stddev(this->delta);
|
|
start_time[arg0] = 0;
|
|
}
|
|
|
|
dtrace:::END
|
|
{
|
|
printf("total time, us: %d\n", (timestamp - dstart) / 1000);
|
|
printa(" %s (%d), us:\n%@d\n", @q);
|
|
printa("max%s (%d), us: %@d\n", @max);
|
|
printa("avg%s (%d), us: %@d\n", @avg);
|
|
printa("stddev%s (%d), us: %@d\n", @stddev);
|
|
}
|