sampleproc revision 1.1.1.1
1#!/usr/bin/ksh 2# 3# sampleproc - sample processes on the CPUs. 4# Written using DTrace (Solaris 10 3/05). 5# 6# This program samples which process is on each CPU, at a particular 7# configurable rate. This can be used as an estimate for which process 8# is consuming the most CPU time. 9# 10# $Id: sampleproc,v 1.1.1.1 2015/09/30 22:01:07 christos Exp $ 11# 12# USAGE: sampleproc [hertz] # hit Ctrl-C to end sample 13# 14# FIELDS: 15# PID Process ID 16# COMMAND Command name 17# COUNT Number of samples 18# PERCENT Percent of CPU usage 19# 20# BASED ON: /usr/demo/dtrace/prof.d 21# 22# SEE ALSO: 23# DTrace Guide "profile Provider" chapter (docs.sun.com) 24# 25# PORTIONS: Copyright (c) 2005 Brendan Gregg. 26# 27# CDDL HEADER START 28# 29# The contents of this file are subject to the terms of the 30# Common Development and Distribution License, Version 1.0 only 31# (the "License"). You may not use this file except in compliance 32# with the License. 33# 34# You can obtain a copy of the license at Docs/cddl1.txt 35# or http://www.opensolaris.org/os/licensing. 36# See the License for the specific language governing permissions 37# and limitations under the License. 38# 39# CDDL HEADER END 40# 41# 09-Jun-2005 Brendan Gregg Created this. 42# 09-Jul-2005 " " Last update. 43 44### Usage 45function usage 46{ 47 cat <<-END >&2 48 USAGE: sampleproc [hertz] 49 eg, 50 sampleproc # defaults to 100 hertz 51 sampleproc 1000 # 1000 hertz 52 END 53 exit 1 54} 55 56### Process arguments 57if (( $# == 0 )); then 58 hertz=100 59elif (( $# == 1 )); then 60 hertz=$1 61 if [[ "$hertz" = *[a-zA-Z]* ]]; then 62 print "ERROR2: $hertz hertz is invalid." >&2 63 exit 2 64 fi 65 if (( hertz > 5000 )); then 66 print "ERROR3: $hertz hertz is too fast (max 5000)." >&2 67 exit 3 68 fi 69 if (( hertz < 1 )); then 70 print "ERROR4: $hertz hertz is too low (min 1)." >&2 71 exit 4 72 fi 73else 74 usage 75fi 76 77### Run DTrace 78/usr/sbin/dtrace -n ' 79 #pragma D option quiet 80 81 dtrace:::BEGIN 82 { 83 printf("Sampling at %d hertz... Hit Ctrl-C to end.\n",$1); 84 self->start = timestamp; 85 } 86 87 profile:::profile-$1 88 { 89 @Proc[pid, execname] = count(); 90 @BigProc[pid, execname] = sum(1000); /* dont ask */ 91 } 92 93 dtrace:::END 94 { 95 this->end = timestamp; 96 97 printf("%5s %-20s %10s\n", "PID", "CMD", "COUNT"); 98 printa("%5d %-20s %10@d\n", @Proc); 99 100 normalize(@BigProc, 101 ((`ncpus_online * $1 * (this->end - self->start))/100000000)); 102 printf("\n%5s %-20s %10s\n", "PID", "CMD", "PERCENT"); 103 printa("%5d %-20s %10@d\n", @BigProc); 104 } 105' $hertz 106