1#!/bin/sh 2# 3# Test Case 5 - sar 4# 5 6export TCID="cpuhotplug05" 7export TST_TOTAL=1 8export LC_TIME="POSIX" 9 10# Includes: 11. test.sh 12. cpuhotplug_testsuite.sh 13. cpuhotplug_hotplug.sh 14 15cat <<EOF 16Name: $TCID 17Date: `date` 18Desc: Does sar behave properly during CPU hotplug events? 19 20EOF 21 22usage() 23{ 24 cat << EOF 25 usage: $0 -c cpu -l loop -d directory 26 27 OPTIONS 28 -c cpu which is specified for testing 29 -l number of cycle test 30 -d directory used to lay file 31 32EOF 33 exit 1 34} 35 36do_clean() 37{ 38 pid_is_valid ${SAR_PID} && kill_pid ${SAR_PID} 39 online_cpu "$CPU_TO_TEST" 40} 41 42get_field() 43{ 44 echo "$1" | awk "{print \$$2}" 45} 46 47while getopts c:l:d: OPTION; do 48 case $OPTION in 49 c) 50 CPU_TO_TEST=$OPTARG;; 51 l) 52 HOTPLUG05_LOOPS=$OPTARG;; 53 d) 54 TMP=$OPTARG;; 55 ?) 56 usage;; 57 esac 58done 59 60LOOP_COUNT=1 61 62tst_test_cmds sar 63 64if [ $(get_present_cpus_num) -lt 2 ]; then 65 tst_brkm TCONF "system doesn't have required CPU hotplug support" 66fi 67 68if [ -z "$CPU_TO_TEST" ]; then 69 tst_brkm TBROK "usage: ${0##*} <CPU to offline>" 70fi 71 72# Validate the specified CPU is available 73if ! cpu_is_valid "${CPU_TO_TEST}" ; then 74 tst_brkm TCONF "cpu${CPU_TO_TEST} doesn't support hotplug" 75fi 76 77# Check that the specified CPU is offline; if not, offline it 78if cpu_is_online "${CPU_TO_TEST}" ; then 79 if ! offline_cpu ${CPU_TO_TEST} ; then 80 tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be offlined" 81 fi 82fi 83 84TST_CLEANUP=do_clean 85 86LOG_FILE="$TMP/log_$$" 87 88until [ $LOOP_COUNT -gt $HOTPLUG05_LOOPS ]; do 89 90 # Start up SAR and give it a couple cycles to run 91 sar 1 0 >/dev/null 2>&1 & 92 sleep 2 93 # "sar 1 0" is supported before 'sysstat-8.1.4(include sar)', 94 # after that use "sar 1" instead of. Use 'ps -C sar' to check. 95 if ps -C sar >/dev/null 2>&1; then 96 pkill sar 97 sar -P "$CPU_TO_TEST" 1 0 > "$LOG_FILE" & 98 else 99 sar -P "$CPU_TO_TEST" 1 > "$LOG_FILE" & 100 fi 101 sleep 2 102 SAR_PID=$! 103 104 # Since the CPU is offline, SAR should display all the 6 fields 105 # of CPU statistics as '0.00' 106 offline_status=$(tail -n 1 "$LOG_FILE") 107 if [ -z "$offline_status" ]; then 108 tst_brkm TBROK "SAR output file is empty" 109 fi 110 111 cpu_field=$(get_field "$offline_status" "2") 112 if [ "${cpu_field}" = "CPU" ]; then 113 # Since sysstat-11.7.1, sar/sadf didn't display offline CPU 114 tst_resm TINFO "SAR didn't display offline CPU" 115 else 116 for i in $(seq 3 8); do 117 field=$(get_field "$offline_status" "$i") 118 if [ "$field" != "0.00" ]; then 119 tst_brkm TBROK "Field $i is '$field', '0.00' expected" 120 fi 121 done 122 fi 123 124 # Online the CPU 125 if ! online_cpu ${CPU_TO_TEST}; then 126 tst_brkm TBROK "CPU${CPU_TO_TEST} cannot be onlined" 127 fi 128 129 sleep 2 130 131 # Check that SAR registered the change in CPU online/offline states 132 online_status=$(tail -n 1 "$LOG_FILE") 133 check_passed=0 134 for i in $(seq 3 8); do 135 field_online=$(get_field "$online_status" "$i") 136 137 if [ "$field_online" != "0.00" ]; then 138 check_passed=1 139 break 140 fi 141 done 142 143 if [ $check_passed -eq 0 ]; then 144 tst_resm TFAIL "No change in the CPU statistics" 145 tst_exit 146 fi 147 148 offline_cpu ${CPU_TO_TEST} 149 kill_pid ${SAR_PID} 150 151 LOOP_COUNT=$((LOOP_COUNT+1)) 152 153done 154 155tst_resm TPASS "SAR updated statistics after the CPU was turned on." 156 157tst_exit 158