#!/usr/sbin/dtrace -Zs /* * js_stat.d - JavaScript operation stats using DTrace. * Written for the JavaScript DTrace provider. * * $Id: js_stat.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ * * 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); }