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      1 #!/usr/sbin/dtrace -Zs
      2 /*
      3  * rb_cpudist.d - measure Ruby on-CPU times for types of operation.
      4  *                Written for the Ruby DTrace provider.
      5  *
      6  * $Id: rb_cpudist.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $
      7  *
      8  * This traces Ruby activity from all programs running on the system with
      9  * Ruby provider support.
     10  *
     11  * USAGE: rb_cpudist.d 		# hit Ctrl-C to end
     12  *
     13  * This script prints distribution plots of elapsed time for Ruby
     14  * operations. Use rb_cputime.d for summary reports.
     15  *
     16  * FIELDS:
     17  *		1		Filename of the Ruby program
     18  *		2		Type of call (method/obj-new/gc)
     19  *		3		Name of call
     20  *
     21  * Filename and method names are printed if available.
     22  *
     23  * COPYRIGHT: Copyright (c) 2007 Brendan Gregg.
     24  *
     25  * CDDL HEADER START
     26  *
     27  *  The contents of this file are subject to the terms of the
     28  *  Common Development and Distribution License, Version 1.0 only
     29  *  (the "License").  You may not use this file except in compliance
     30  *  with the License.
     31  *
     32  *  You can obtain a copy of the license at Docs/cddl1.txt
     33  *  or http://www.opensolaris.org/os/licensing.
     34  *  See the License for the specific language governing permissions
     35  *  and limitations under the License.
     36  *
     37  * CDDL HEADER END
     38  *
     39  * 09-Sep-2007	Brendan Gregg	Created this.
     40  */
     41 
     42 #pragma D option quiet
     43 
     44 dtrace:::BEGIN
     45 {
     46 	printf("Tracing... Hit Ctrl-C to end.\n");
     47 }
     48 
     49 ruby*:::function-entry
     50 {
     51 	self->depth++;
     52 	self->exclude[self->depth] = 0;
     53 	self->function[self->depth] = vtimestamp;
     54 }
     55 
     56 ruby*:::function-return
     57 /self->function[self->depth]/
     58 {
     59 	this->oncpu_incl = vtimestamp - self->function[self->depth];
     60 	this->oncpu_excl = this->oncpu_incl - self->exclude[self->depth];
     61 	self->function[self->depth] = 0;
     62 	self->exclude[self->depth] = 0;
     63 	this->file = basename(copyinstr(arg2));
     64 	this->name = strjoin(strjoin(copyinstr(arg0), "::"), copyinstr(arg1));
     65 
     66 	@types_incl[this->file, "func", this->name] =
     67 	    quantize(this->oncpu_incl / 1000);
     68 	@types_excl[this->file, "func", this->name] =
     69 	    quantize(this->oncpu_excl / 1000);
     70 
     71 	self->depth--;
     72 	self->exclude[self->depth] += this->oncpu_incl;
     73 }
     74 
     75 ruby*:::object-create-start
     76 {
     77 	self->object = vtimestamp;
     78 }
     79 
     80 ruby*:::object-create-done
     81 /self->object/
     82 {
     83 	this->oncpu = vtimestamp - self->object;
     84 	self->object = 0;
     85 	this->file = basename(copyinstr(arg1));
     86 	this->file = this->file != NULL ? this->file : ".";
     87 
     88 	@types[this->file, "obj-new", copyinstr(arg0)] =
     89 	    quantize(this->oncpu / 1000);
     90 
     91 	self->exclude[self->depth] += this->oncpu;
     92 }
     93 
     94 ruby*:::gc-begin
     95 {
     96 	self->gc = vtimestamp;
     97 }
     98 
     99 ruby*:::gc-end
    100 /self->gc/
    101 {
    102 	this->oncpu = vtimestamp - self->gc;
    103 	self->gc = 0;
    104 
    105 	@types[".", "gc", "-"] = quantize(this->oncpu / 1000);
    106 
    107 	self->exclude[self->depth] += this->oncpu;
    108 }
    109 
    110 dtrace:::END
    111 {
    112 	printf("\nOn-CPU times (us),\n");
    113 	printa("   %s, %s, %s %@d\n", @types);
    114 
    115 	printf("\nExclusive function on-CPU times (us),\n");
    116 	printa("   %s, %s, %s %@d\n", @types_excl);
    117 
    118 	printf("\nInclusive function on-CPU times (us),\n");
    119 	printa("   %s, %s, %s %@d\n", @types_incl);
    120 }
    121