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#!/usr/sbin/dtrace -Zs
/*
* js_stat.d - JavaScript operation stats using DTrace.
* Written for the JavaScript DTrace provider.
*
* $Id: js_stat.d 63 2007-10-04 04:34:38Z brendan $
*
* This traces activity from all browsers on the system that are
* running with JavaScript provider support.
*
* USAGE: js_stat.d [interval [count]]
*
* FIELDS:
* EXEC/s JavaScript programs executed per second
* FUNCS/s Functions called, per second
* OBJNEW/s Objects created, per second
* OBJFRE/s Objects freed (finalize), per second
*
* The numbers are counts for the interval specified. The default interval
* is 1 second.
*
* Filename and function names are printed if available.
*
* COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at Docs/cddl1.txt
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* CDDL HEADER END
*
* 09-Sep-2007 Brendan Gregg Created this.
*/
#pragma D option quiet
#pragma D option defaultargs
inline int SCREEN = 21;
dtrace:::BEGIN
{
execs = funcs = objnew = objfree = 0;
lines = SCREEN + 1;
interval = $1 ? $1 : 1;
counts = $2 ? $2 : -1;
secs = interval;
first = 1;
}
profile:::tick-1sec
{
secs--;
}
/*
* Print Header
*/
dtrace:::BEGIN,
profile:::tick-1sec
/first || (secs == 0 && lines > SCREEN)/
{
printf("%-20s %8s %8s %8s %8s\n", "TIME", "EXEC/s", "FUNC/s",
"OBJNEW/s", "OBJFRE/s");
lines = 0;
first = 0;
}
/*
* Tally Data
*/
javascript*:::execute-start
{
execs++;
}
javascript*:::function-entry
{
funcs++;
}
javascript*:::object-create-start
{
objnew++;
}
javascript*:::object-finalize
{
objfree++;
}
/*
* Print Output
*/
profile:::tick-1sec
/secs == 0/
{
printf("%-20Y %8d %8d %8d %8d\n", walltimestamp, execs / interval,
funcs / interval, objnew / interval, objfree / interval);
execs = funcs = objnew = objfree = 0;
secs = interval;
lines++;
counts--;
}
/*
* End
*/
profile:::tick-1sec
/counts == 0/
{
exit(0);
}
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