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June 1, 2012 21:31
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intelcpu.sh
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#!/usr/bin/sh | |
# | |
# intelcpi - measure CPI and utilization on Intel processors. | |
# | |
# USAGE: intelcpi [interval] | |
# eg, | |
# intelcpi 0.1 # for 0.1 second intervals | |
# | |
# CPI shows how memory intensive CPU workloads are. | |
# | |
# Copyright 2011 Joyent, Inc. All rights reserved. | |
# Copyright 2011 Brendan Gregg. All rights reserved. | |
# | |
# CDDL HEADER START | |
# | |
# The contents of this file are subject to the terms of the | |
# Common Development and Distribution License (the "License"). | |
# You may not use this file except in compliance with the License. | |
# | |
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
# or http://www.opensolaris.org/os/licensing. | |
# See the License for the specific language governing permissions | |
# and limitations under the License. | |
# | |
# When distributing Covered Code, include this CDDL HEADER in each | |
# file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
# If applicable, add the following below this CDDL HEADER, with the | |
# fields enclosed by brackets "[]" replaced with your own identifying | |
# information: Portions Copyright [yyyy] [name of copyright owner] | |
# | |
# CDDL HEADER END | |
interval=${1:-1} # default interval, 1 second | |
set -- `kstat -p unix:0:system_misc:ncpus` # assuming no psets, | |
cpus=$2 # number of CPUs | |
pics='instr_retired.any' # instructions | |
pics=$pics,'cpu_clk_unhalted.ref,sys' # cycles | |
/usr/sbin/cpustat -tc $pics $interval | nawk ' | |
BEGIN { printf "%16s %8s %8s\n", "Instructions", "CPI", "%CPU"; } | |
NR > 1 { | |
total += $4; | |
instructions += $5; | |
cycles += $6; | |
} | |
NR > 1 && (((NR - 1) % '$cpus') == 0) { | |
printf "%16u %8.2f %8.2f\n", instructions, | |
cycles / instructions, | |
100 * cycles / total ; | |
total = 0; | |
cycles = 0; | |
instructions = 0; | |
} | |
' |
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