1 #!/usr/sbin/dtrace -Zs 2 /* 3 * js_cputime.d - measure JavaScript on-CPU times for types of operation. 4 * Written for the JavaScript DTrace provider. 5 * 6 * $Id: js_cputime.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ 7 * 8 * This traces JavaScript activity from all browsers running on the system with 9 * JavaScript provider support. 10 * 11 * USAGE: js_cputime.d # hit Ctrl-C to end 12 * 13 * FIELDS: 14 * FILE Filename of the JavaScript program 15 * TYPE Type of call (func/obj-new/gc/total) 16 * NAME Name of call 17 * TOTAL Total on-CPU time for calls (us) 18 * 19 * Filename and function names are printed if available. 20 * 21 * COPYRIGHT: Copyright (c) 2007 Brendan Gregg. 22 * 23 * CDDL HEADER START 24 * 25 * The contents of this file are subject to the terms of the 26 * Common Development and Distribution License, Version 1.0 only 27 * (the "License"). You may not use this file except in compliance 28 * with the License. 29 * 30 * You can obtain a copy of the license at Docs/cddl1.txt 31 * or http://www.opensolaris.org/os/licensing. 32 * See the License for the specific language governing permissions 33 * and limitations under the License. 34 * 35 * CDDL HEADER END 36 * 37 * 09-Sep-2007 Brendan Gregg Created this. 38 */ 39 40 #pragma D option quiet 41 42 dtrace:::BEGIN 43 { 44 printf("Tracing... Hit Ctrl-C to end.\n"); 45 } 46 47 javascript*:::function-entry 48 { 49 self->depth++; 50 self->exclude[self->depth] = 0; 51 self->function[self->depth] = vtimestamp; 52 } 53 54 javascript*:::function-return 55 /self->function[self->depth]/ 56 { 57 this->oncpu_incl = vtimestamp - self->function[self->depth]; 58 this->oncpu_excl = this->oncpu_incl - self->exclude[self->depth]; 59 self->function[self->depth] = 0; 60 self->exclude[self->depth] = 0; 61 this->file = basename(copyinstr(arg0)); 62 this->name = copyinstr(arg2); 63 64 @num[this->file, "func", this->name] = count(); 65 @num["-", "total", "-"] = count(); 66 @types_incl[this->file, "func", this->name] = sum(this->oncpu_incl); 67 @types_excl[this->file, "func", this->name] = sum(this->oncpu_excl); 68 @types_excl["-", "total", "-"] = sum(this->oncpu_excl); 69 70 self->depth--; 71 self->exclude[self->depth] += this->oncpu_incl; 72 } 73 74 javascript*:::object-create-start 75 { 76 self->object = vtimestamp; 77 } 78 79 javascript*:::object-create-done 80 /self->object/ 81 { 82 this->oncpu = vtimestamp - self->object; 83 self->object = 0; 84 this->file = basename(copyinstr(arg0)); 85 this->name = copyinstr(arg1); 86 87 @num[this->file, "obj-new", this->name] = count(); 88 @num["-", "total", "-"] = count(); 89 @types[this->file, "obj-new", this->name] = sum(this->oncpu); 90 @types["-", "total", "-"] = sum(this->oncpu); 91 92 self->exclude[self->depth] += this->oncpu; 93 } 94 95 dtrace:::END 96 { 97 printf("\nCount,\n"); 98 printf(" %-20s %-10s %-32s %8s\n", "FILE", "TYPE", "NAME", "COUNT"); 99 printa(" %-20.20s %-10s %-32s %@8d\n", @num); 100 101 normalize(@types, 1000); 102 printf("\nElapsed times (us),\n"); 103 printf(" %-20s %-10s %-32s %8s\n", "FILE", "TYPE", "NAME", "TOTAL"); 104 printa(" %-20.20s %-10s %-32s %@8d\n", @types); 105 106 normalize(@types_excl, 1000); 107 printf("\nExclusive function on-CPU times (us),\n"); 108 printf(" %-20s %-10s %-32s %8s\n", "FILE", "TYPE", "NAME", "TOTAL"); 109 printa(" %-20.20s %-10s %-32s %@8d\n", @types_excl); 110 111 normalize(@types_incl, 1000); 112 printf("\nInclusive function on-CPU times (us),\n"); 113 printf(" %-20s %-10s %-32s %8s\n", "FILE", "TYPE", "NAME", "TOTAL"); 114 printa(" %-20.20s %-10s %-32s %@8d\n", @types_incl); 115 } 116