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      1 #!/usr/sbin/dtrace -Zs
      2 /*
      3  * rb_stat.d - Ruby operation stats using DTrace.
      4  *             Written for the Ruby DTrace provider.
      5  *
      6  * $Id: rb_stat.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $
      7  *
      8  * This traces activity from all Ruby programs on the system that are
      9  * running with Ruby provider support.
     10  *
     11  * USAGE: rb_stat.d [interval [count]]
     12  *
     13  * FIELDS:
     14  *		EXEC/s		Ruby programs executed per second, including
     15  *				those without Ruby provider support
     16  *		METHOD/s	Methods called, per second
     17  *		OBJNEW/s	Objects created, per second
     18  *		OBJFRE/s	Objects freed, per second
     19  *		RAIS/s		Raises, per second
     20  *		RESC/s		Rescues, per second
     21  *		GC/s		Garbage collects, per second
     22  *
     23  * The numbers are counts for the interval specified. The default interval
     24  * is 1 second.
     25  *
     26  * If you see a count in "EXECS" but not in the other columns, then your
     27  * Ruby software is probably not running with the DTrace Ruby provider.
     28  * See Ruby/Readme.
     29  *
     30  * Filename and method names are printed if available.
     31  *
     32  * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
     33  *
     34  * CDDL HEADER START
     35  *
     36  *  The contents of this file are subject to the terms of the
     37  *  Common Development and Distribution License, Version 1.0 only
     38  *  (the "License").  You may not use this file except in compliance
     39  *  with the License.
     40  *
     41  *  You can obtain a copy of the license at Docs/cddl1.txt
     42  *  or http://www.opensolaris.org/os/licensing.
     43  *  See the License for the specific language governing permissions
     44  *  and limitations under the License.
     45  *
     46  * CDDL HEADER END
     47  *
     48  * 09-Sep-2007	Brendan Gregg	Created this.
     49  */
     50 
     51 #pragma D option quiet
     52 #pragma D option defaultargs
     53 
     54 inline int SCREEN = 21;
     55 
     56 dtrace:::BEGIN
     57 {
     58 	execs = methods = objnew = objfree = gc = raised = rescue = 0;
     59 	lines = SCREEN + 1;
     60 	interval = $1 ? $1 : 1;
     61 	counts = $2 ? $2 : -1;
     62 	secs = interval;
     63 	first = 1;
     64 }
     65 
     66 profile:::tick-1sec
     67 {
     68 	secs--;
     69 }
     70 
     71 /*
     72  * Print Header
     73  */
     74 dtrace:::BEGIN,
     75 profile:::tick-1sec
     76 /first || (secs == 0 && lines > SCREEN)/
     77 {
     78 	printf("%-20s %8s %8s %8s %8s %6s %6s %6s\n", "TIME", "EXEC/s",
     79 	    "METHOD/s", "OBJNEW/s", "OBJFRE/s", "RAIS/s", "RESC/s", "GC/s");
     80 	lines = 0;
     81 	first = 0;
     82 }
     83 
     84 /*
     85  * Tally Data
     86  */
     87 proc:::exec-success
     88 /execname == "ruby"/
     89 {
     90 	execs++;
     91 }
     92 
     93 ruby*:::function-entry
     94 {
     95 	methods++;
     96 }
     97 
     98 ruby*:::object-create-start
     99 {
    100 	objnew++;
    101 }
    102 
    103 ruby*:::object-free
    104 {
    105 	objfree++;
    106 }
    107 
    108 ruby*:::raise
    109 {
    110 	raised++;
    111 }
    112 
    113 ruby*:::rescue
    114 {
    115 	rescue++;
    116 }
    117 
    118 ruby*:::gc-begin
    119 {
    120 	gc++;
    121 }
    122 
    123 /*
    124  * Print Output
    125  */
    126 profile:::tick-1sec
    127 /secs == 0/
    128 {
    129 	printf("%-20Y %8d %8d %8d %8d %6d %6d %6d\n", walltimestamp,
    130 	    execs / interval, methods / interval, objnew / interval,
    131 	    objfree / interval, raised / interval, rescue / interval,
    132 	    gc / interval);
    133 	execs = methods = objnew = objfree = gc = raised = rescue = 0;
    134 	secs = interval;
    135 	lines++;
    136 	counts--;
    137 }
    138 
    139 /*
    140  * End
    141  */
    142 profile:::tick-1sec
    143 /counts == 0/
    144 {
    145         exit(0);
    146 }
    147