1 #!/usr/sbin/dtrace -Zs 2 /* 3 * sh_cpudist.d - measure Bourne shell on-CPU times for types of operation. 4 * Written for the sh DTrace provider. 5 * 6 * $Id: sh_cpudist.d,v 1.1.1.1 2015/09/30 22:01:09 christos Exp $ 7 * 8 * This traces shell activity from all Bourne shells on the system that are 9 * running with sh provider support. 10 * 11 * USAGE: sh_cpudist.d # hit Ctrl-C to end 12 * 13 * This script prints distribution plots of on-CPU time for shell 14 * operations. Use sh_cputime.d for summary reports. 15 * 16 * FIELDS: 17 * 1 Filename of the shell or shellscript 18 * 2 Type of call (func/builtin/cmd) 19 * 3 Name of call 20 * 21 * Filename and call 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 sh*:::function-entry 50 { 51 self->depth++; 52 self->function[self->depth] = vtimestamp; 53 self->exclude[self->depth] = 0; 54 } 55 56 sh*:::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(arg0)); 64 this->name = 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 sh*:::builtin-entry 76 { 77 self->builtin = vtimestamp; 78 } 79 80 sh*:::builtin-return 81 /self->builtin/ 82 { 83 this->oncpu = vtimestamp - self->builtin; 84 self->builtin = 0; 85 86 @types[basename(copyinstr(arg0)), "builtin", copyinstr(arg1)] = 87 quantize(this->oncpu / 1000); 88 89 self->exclude[self->depth] += this->oncpu; 90 } 91 92 sh*:::command-entry 93 { 94 incmd[pid] = basename(copyinstr(arg0)); 95 depth[pid] = self->depth; 96 } 97 98 sh*:::command-return 99 { 100 incmd[pid] = 0; 101 } 102 103 proc:::exec-success 104 { 105 /* 106 * Due to thread timing after fork(), this probe can fire before 107 * sh*:::command-entry has, which means we can't predicate this 108 * exec() away just yet. Store the vtimestamp in case it is needed. 109 */ 110 self->command = vtimestamp; 111 } 112 113 proc:::exit 114 /incmd[ppid] == NULL/ 115 { 116 self->command = 0; 117 } 118 119 proc:::exit 120 /incmd[ppid] != NULL/ 121 { 122 this->oncpu = vtimestamp - self->command; 123 self->command = 0; 124 125 @types[incmd[ppid], "cmd", execname] = quantize(this->oncpu / 1000); 126 127 self->exclude[depth[ppid]] += this->oncpu; 128 incmd[ppid] = 0; 129 depth[ppid] = 0; 130 } 131 132 dtrace:::END 133 { 134 printf("On-CPU times (us),\n\n"); 135 printa(" %s, %s, %s %@d\n", @types); 136 137 printf("Exclusive function on-CPU times (us),\n\n"); 138 printa(" %s, %s, %s %@d\n", @types_excl); 139 140 printf("Inclusive function on-CPU times (us),\n\n"); 141 printa(" %s, %s, %s %@d\n", @types_incl); 142 } 143