1 #!/usr/sbin/dtrace -s 2 3 /*- 4 * Copyright (c) 2012-2016 Ryan Stone 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * DTrace script for collecting schedgraph data. Run the output 31 * of this script through make_ktr before feeding it into 32 * schedgraph.py 33 * 34 * e.g. 35 * # ./schedgraph.d > /tmp/sched.out 36 * # ./make_ktr.sh /tmp/sched.out /tmp/sched.ktr 37 * # python schedgraph.py /tmp/sched.ktr 1 38 */ 39 40 #pragma D option quiet 41 #pragma D option bufpolicy=ring 42 43 inline int TDF_IDLETD = 0x00000020; 44 45 /* 46 * Reasons that the current thread can not be run yet. 47 * More than one may apply. 48 */ 49 inline int TDI_SUSPENDED = 0x0001; /* On suspension queue. */ 50 inline int TDI_SLEEPING = 0x0002; /* Actually asleep! (tricky). */ 51 inline int TDI_SWAPPED = 0x0004; /* Stack not in mem. Bad juju if run. */ 52 inline int TDI_LOCK = 0x0008; /* Stopped on a lock. */ 53 inline int TDI_IWAIT = 0x0010; /* Awaiting interrupt. */ 54 55 inline string KTDSTATE[struct thread * td] = \ 56 (((td)->td_inhibitors & TDI_SLEEPING) != 0 ? "sleep" : \ 57 ((td)->td_inhibitors & TDI_SUSPENDED) != 0 ? "suspended" : \ 58 ((td)->td_inhibitors & TDI_SWAPPED) != 0 ? "swapped" : \ 59 ((td)->td_inhibitors & TDI_LOCK) != 0 ? "blocked" : \ 60 ((td)->td_inhibitors & TDI_IWAIT) != 0 ? "iwait" : "yielding"); 61 62 /* 63 * NOCPU changed from 255 to -1 at some point. This hacky test will work on a 64 * kernel compiled with either version. 65 */ 66 inline int is_nocpu[int cpu] = cpu < 0 || cpu > `mp_maxid; 67 68 sched:::load-change 69 / is_nocpu[args[0]] / 70 { 71 printf("%d %d KTRGRAPH group:\"load\", id:\"global load\", counter:\"%d\", attributes: \"none\"\n", cpu, timestamp, args[1]); 72 } 73 74 sched:::load-change 75 / !is_nocpu[args[0]] / 76 { 77 printf("%d %d KTRGRAPH group:\"load\", id:\"CPU %d load\", counter:\"%d\", attributes: \"none\"\n", cpu, timestamp, args[0], args[1]); 78 79 } 80 81 proc:::exit 82 { 83 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"proc exit\", attributes: prio:td\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid); 84 } 85 86 proc:::lwp-exit 87 { 88 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"exit\", attributes: prio:td\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid); 89 } 90 91 sched:::change-pri 92 { 93 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"priority change\", attributes: prio:%d, new prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, arg2, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid); 94 } 95 96 sched:::lend-pri 97 { 98 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"lend prio\", attributes: prio:%d, new prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, args[0]->td_priority, arg2, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid); 99 } 100 101 sched:::enqueue 102 { 103 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"runq add\", attributes: prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid); 104 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"wokeup\", attributes: linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid); 105 } 106 107 sched:::dequeue 108 { 109 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"runq rem\", attributes: prio:%d, linkedto:\"%s/%s tid %d\"\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid); 110 } 111 112 sched:::tick 113 { 114 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", point:\"statclock\", attributes: prio:%d, stathz:%d\n", cpu, timestamp, args[0]->td_proc->p_comm, args[0]->td_name, args[0]->td_tid, args[0]->td_priority, `stathz ? `stathz : `hz); 115 } 116 117 sched:::off-cpu 118 / curthread->td_flags & TDF_IDLETD / 119 { 120 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"idle\", attributes: prio:%d\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, curthread->td_priority); 121 } 122 123 sched:::off-cpu 124 / (curthread->td_flags & TDF_IDLETD) == 0 / 125 { 126 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"%s\", attributes: prio:%d, wmesg:\"%s\", lockname:\"%s\"\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, KTDSTATE[curthread], curthread->td_priority, curthread->td_wmesg ? stringof(curthread->td_wmesg) : "(null)", curthread->td_lockname ? stringof(curthread->td_lockname) : "(null)"); 127 } 128 129 sched:::on-cpu 130 { 131 printf("%d %d KTRGRAPH group:\"thread\", id:\"%s/%s tid %d\", state:\"running\", attributes: prio:%d\n", cpu, timestamp, curthread->td_proc->p_comm, curthread->td_name, curthread->td_tid, curthread->td_priority); 132 } 133 134