#!/bin/bash# perf stat tests# SPDX-License-Identifier: GPL-2.0 set -e err=0stat_output=$(mktemp /tmp/perf-stat-test-output.XXXXX) cleanup() { rm -f "${stat_output}" trap - EXIT TERM INT} trap_cleanup() { echo "Unexpected signal in ${FUNCNAME[1]}" cleanup exit 1} trap trap_cleanup EXIT TERM INT test_default_stat() { echo "Basic stat command test" if ! perf stat true 2>&1 | grep -E -q "Performance counter stats for 'true':" then echo "Basic stat command test [Failed]" err=1 return fi echo "Basic stat command test [Success]"} test_null_stat() { echo "Null stat command test" if ! perf stat --null true 2>&1 | grep -E -q "Performance counter stats for 'true':" then echo "Null stat command test [Failed]" err=1 return fi echo "Null stat command test [Success]"} find_offline_cpu() { for i in $(seq 1 4096) do if [[ ! -f /sys/devices/system/cpu/cpu$i/online || \ $(cat /sys/devices/system/cpu/cpu$i/online) == "0" ]] then echo $i return fi done echo "Failed to find offline CPU" exit 1} test_offline_cpu_stat() { cpu=$(find_offline_cpu) echo "Offline CPU stat command test (cpu $cpu)" if ! perf stat "-C$cpu" -e cycles true 2>&1 | grep -E -q "No supported events found." then echo "Offline CPU stat command test [Failed]" err=1 return fi echo "Offline CPU stat command test [Success]"} test_stat_record_report() { echo "stat record and report test" if ! perf stat record -e task-clock -o - true | perf stat report -i - 2>&1 | \ grep -E -q "Performance counter stats for 'pipe':" then echo "stat record and report test [Failed]" err=1 return fi echo "stat record and report test [Success]"} test_stat_record_script() { echo "stat record and script test" if ! perf stat record -e task-clock -o - true | perf script -i - 2>&1 | \ grep -E -q "CPU[[:space:]]+THREAD[[:space:]]+VAL[[:space:]]+ENA[[:space:]]+RUN[[:space:]]+TIME[[:space:]]+EVENT" then echo "stat record and script test [Failed]" err=1 return fi echo "stat record and script test [Success]"} test_stat_repeat_weak_groups() { echo "stat repeat weak groups test" if ! perf stat -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}' \ true 2>&1 | grep -q 'seconds time elapsed' then echo "stat repeat weak groups test [Skipped event parsing failed]" return fi if ! perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W' \ true > /dev/null 2>&1 then echo "stat repeat weak groups test [Failed]" err=1 return fi echo "stat repeat weak groups test [Success]"} test_topdown_groups() { # Topdown events must be grouped with the slots event first. Test that # parse-events reorders this. echo "Topdown event group test" if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1 then echo "Topdown event group test [Skipped event parsing failed]" return fi td_err=0 do_topdown_group_test() { events=$1 failure=$2 if perf stat -e "$events" true 2>&1 | grep -E -q "<not supported>" then echo "Topdown event group test [Failed $failure for '$events']" td_err=1 return fi } do_topdown_group_test "{slots,topdown-retiring}" "events not supported" do_topdown_group_test "{instructions,r400,r8000}" "raw format slots not reordered first" filler_events=("instructions" "cycles" "context-switches" "faults") for ((i = 0; i < ${#filler_events[@]}; i+=2)) do filler1=${filler_events[i]} filler2=${filler_events[i+1]} do_topdown_group_test "$filler1,topdown-retiring,slots" \ "slots not reordered first in no-group case" do_topdown_group_test "slots,$filler1,topdown-retiring" \ "topdown metrics event not reordered in no-group case" do_topdown_group_test "{$filler1,topdown-retiring,slots}" \ "slots not reordered first in single group case" do_topdown_group_test "{$filler1,slots},topdown-retiring" \ "topdown metrics event not move into slots group" do_topdown_group_test "topdown-retiring,{$filler1,slots}" \ "topdown metrics event not move into slots group last" do_topdown_group_test "{$filler1,slots},{topdown-retiring}" \ "topdown metrics group not merge into slots group" do_topdown_group_test "{topdown-retiring},{$filler1,slots}" \ "topdown metrics group not merge into slots group last" do_topdown_group_test "{$filler1,slots},$filler2,topdown-retiring" \ "non-adjacent topdown metrics group not move into slots group" do_topdown_group_test "$filler2,topdown-retiring,{$filler1,slots}" \ "non-adjacent topdown metrics group not move into slots group last" do_topdown_group_test "{$filler1,slots},{$filler2,topdown-retiring}" \ "metrics group not merge into slots group" do_topdown_group_test "{$filler1,topdown-retiring},{$filler2,slots}" \ "metrics group not merge into slots group last" done if test "$td_err" -eq 0 then echo "Topdown event group test [Success]" else err="$td_err" fi} test_topdown_weak_groups() { # Weak groups break if the perf_event_open of multiple grouped events # fails. Breaking a topdown group causes the events to fail. Test a very large # grouping to see that the topdown events aren't broken out. echo "Topdown weak groups test" ok_grouping="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring},branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references" if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1 then echo "Topdown weak groups test [Skipped event parsing failed]" return fi group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W" if perf stat --no-merge -e "$group_needs_break" true 2>&1 | grep -E -q "<not supported>" then echo "Topdown weak groups test [Failed events not supported]" err=1 return fi echo "Topdown weak groups test [Success]"} test_cputype() { # Test --cputype argument. echo "cputype test" # Bogus PMU should fail. if perf stat --cputype="123" -e instructions true > /dev/null 2>&1 then echo "cputype test [Bogus PMU didn't fail]" err=1 return fi # Find a known PMU for cputype. pmu="" devs="/sys/bus/event_source/devices" for i in $devs/cpu $devs/cpu_atom $devs/armv8_pmuv3_0 $devs/armv8_cortex_* do i_base=$(basename "$i") if test -d "$i" then pmu="$i_base" break fi if perf stat -e "$i_base/instructions/" true > /dev/null 2>&1 then pmu="$i_base" break fi done if test "x$pmu" = "x" then echo "cputype test [Skipped known PMU not found]" return fi # Test running with cputype produces output. if ! perf stat --cputype="$pmu" -e instructions true 2>&1 | grep -E -q "instructions" then echo "cputype test [Failed count missed with given filter]" err=1 return fi echo "cputype test [Success]"} test_hybrid() { # Test the default stat command on hybrid devices opens one cycles event for # each CPU type. echo "hybrid test" # Count the number of core PMUs, assume minimum of 1 pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l) if [ "$pmus" -lt 1 ] then pmus=1 fi # Run default Perf stat cycles_events=$(perf stat -a -- sleep 0.1 2>&1 | grep -E "/cpu-cycles/[uH]*| cpu-cycles[:uH]* " | wc -l) # The expectation is that default output will have a cycles events on each # hybrid PMU. In situations with no cycles PMU events, like virtualized, this # can fall back to task-clock and so the end count may be 0. Fail if neither # condition holds. if [ "$pmus" -ne "$cycles_events" ] && [ "0" -ne "$cycles_events" ] then echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]" err=1 return fi echo "hybrid test [Success]"} test_stat_cpu() { echo "stat -C <cpu> test" # Test the full online CPU list (ranges and lists) online_cpus=$(cat /sys/devices/system/cpu/online) if ! perf stat -C "$online_cpus" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpus $online_cpus]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpus $online_cpus]" cat "${stat_output}" err=1 return fi # Test each individual online CPU for cpu_dir in /sys/devices/system/cpu/cpu[0-9]*; do cpu=${cpu_dir##*/cpu} # Check if online if [ -f "$cpu_dir/online" ] && [ "$(cat "$cpu_dir/online")" -eq 0 ] then continue fi if ! perf stat -C "$cpu" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpu $cpu]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpu $cpu]" cat "${stat_output}" err=1 return fi done # Test synthetic list and range if cpu0 and cpu1 are online c0_online=0 c1_online=0 if [ -d "/sys/devices/system/cpu/cpu0" ] then if [ ! -f "/sys/devices/system/cpu/cpu0/online" ] || [ "$(cat /sys/devices/system/cpu/cpu0/online)" -eq 1 ] then c0_online=1 fi fi if [ -d "/sys/devices/system/cpu/cpu1" ] then if [ ! -f "/sys/devices/system/cpu/cpu1/online" ] || [ "$(cat /sys/devices/system/cpu/cpu1/online)" -eq 1 ] then c1_online=1 fi fi if [ $c0_online -eq 1 ] && [ $c1_online -eq 1 ] then # Test list "0,1" if ! perf stat -C "0,1" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpus 0,1]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpus 0,1]" cat "${stat_output}" err=1 return fi # Test range "0-1" if ! perf stat -C "0-1" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpus 0-1]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpus 0-1]" cat "${stat_output}" err=1 return fi fi echo "stat -C <cpu> test [Success]"} test_stat_no_aggr() { echo "stat -A test" if ! perf stat -A -a true > "${stat_output}" 2>&1 then echo "stat -A test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "CPU" "${stat_output}" then echo "stat -A test [Failed - missing CPU column]" cat "${stat_output}" err=1 return fi echo "stat -A test [Success]"} test_stat_detailed() { echo "stat -d test" if ! perf stat -d true > "${stat_output}" 2>&1 then echo "stat -d test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -d test [Failed - missing output]" cat "${stat_output}" err=1 return fi if ! perf stat -dd true > "${stat_output}" 2>&1 then echo "stat -dd test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -dd test [Failed - missing output]" cat "${stat_output}" err=1 return fi if ! perf stat -ddd true > "${stat_output}" 2>&1 then echo "stat -ddd test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -ddd test [Failed - missing output]" cat "${stat_output}" err=1 return fi echo "stat -d test [Success]"} test_stat_repeat() { echo "stat -r test" if ! perf stat -r 2 true > "${stat_output}" 2>&1 then echo "stat -r test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "\([[:space:]]*\+-.*%[[:space:]]*\)" "${stat_output}" then echo "stat -r test [Failed - missing variance]" cat "${stat_output}" err=1 return fi echo "stat -r test [Success]"} test_stat_pid() { echo "stat -p test" sleep 1 & pid=$! if ! perf stat -p $pid > "${stat_output}" 2>&1 then echo "stat -p test [Failed - command failed]" cat "${stat_output}" err=1 kill $pid 2>/dev/null || true wait $pid 2>/dev/null || true return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -p test [Failed - missing output]" cat "${stat_output}" err=1 else echo "stat -p test [Success]" fi kill $pid 2>/dev/null || true wait $pid 2>/dev/null || true} test_stat_delay() { echo "stat -D test" if ! env LC_ALL=C perf stat -D 1000 -e duration_time sleep 2 > "${stat_output}" 2>&1 then echo "stat -D test [Failed - command failed]" cat "${stat_output}" err=1 return fi duration=$(grep "duration_time" "${stat_output}" | awk '{print $1}' | tr -d ',') elapsed=$(grep "seconds time elapsed" "${stat_output}" | awk '{print $1}') if [ -z "$duration" ] || [ -z "$elapsed" ] thenLines 1–500 of 614. 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#!/bin/bash # perf stat tests # SPDX-License-Identifier: GPL-2.0 set -e err=0 stat_output=$(mktemp /tmp/perf-stat-test-output.XXXXX) cleanup() { rm -f "${stat_output}" trap - EXIT TERM INT } trap_cleanup() { echo "Unexpected signal in ${FUNCNAME[1]}" cleanup exit 1 } trap trap_cleanup EXIT TERM INT test_default_stat() { echo "Basic stat command test" if ! perf stat true 2>&1 | grep -E -q "Performance counter stats for 'true':" then echo "Basic stat command test [Failed]" err=1 return fi echo "Basic stat command test [Success]" } test_null_stat() { echo "Null stat command test" if ! perf stat --null true 2>&1 | grep -E -q "Performance counter stats for 'true':" then echo "Null stat command test [Failed]" err=1 return fi echo "Null stat command test [Success]" } find_offline_cpu() { for i in $(seq 1 4096) do if [[ ! -f /sys/devices/system/cpu/cpu$i/online || \ $(cat /sys/devices/system/cpu/cpu$i/online) == "0" ]] then echo $i return fi done echo "Failed to find offline CPU" exit 1 } test_offline_cpu_stat() { cpu=$(find_offline_cpu) echo "Offline CPU stat command test (cpu $cpu)" if ! perf stat "-C$cpu" -e cycles true 2>&1 | grep -E -q "No supported events found." then echo "Offline CPU stat command test [Failed]" err=1 return fi echo "Offline CPU stat command test [Success]" } test_stat_record_report() { echo "stat record and report test" if ! perf stat record -e task-clock -o - true | perf stat report -i - 2>&1 | \ grep -E -q "Performance counter stats for 'pipe':" then echo "stat record and report test [Failed]" err=1 return fi echo "stat record and report test [Success]" } test_stat_record_script() { echo "stat record and script test" if ! perf stat record -e task-clock -o - true | perf script -i - 2>&1 | \ grep -E -q "CPU[[:space:]]+THREAD[[:space:]]+VAL[[:space:]]+ENA[[:space:]]+RUN[[:space:]]+TIME[[:space:]]+EVENT" then echo "stat record and script test [Failed]" err=1 return fi echo "stat record and script test [Success]" } test_stat_repeat_weak_groups() { echo "stat repeat weak groups test" if ! perf stat -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}' \ true 2>&1 | grep -q 'seconds time elapsed' then echo "stat repeat weak groups test [Skipped event parsing failed]" return fi if ! perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W' \ true > /dev/null 2>&1 then echo "stat repeat weak groups test [Failed]" err=1 return fi echo "stat repeat weak groups test [Success]" } test_topdown_groups() { # Topdown events must be grouped with the slots event first. Test that # parse-events reorders this. echo "Topdown event group test" if ! perf stat -e '{slots,topdown-retiring}' true > /dev/null 2>&1 then echo "Topdown event group test [Skipped event parsing failed]" return fi td_err=0 do_topdown_group_test() { events=$1 failure=$2 if perf stat -e "$events" true 2>&1 | grep -E -q "<not supported>" then echo "Topdown event group test [Failed $failure for '$events']" td_err=1 return fi } do_topdown_group_test "{slots,topdown-retiring}" "events not supported" do_topdown_group_test "{instructions,r400,r8000}" "raw format slots not reordered first" filler_events=("instructions" "cycles" "context-switches" "faults") for ((i = 0; i < ${#filler_events[@]}; i+=2)) do filler1=${filler_events[i]} filler2=${filler_events[i+1]} do_topdown_group_test "$filler1,topdown-retiring,slots" \ "slots not reordered first in no-group case" do_topdown_group_test "slots,$filler1,topdown-retiring" \ "topdown metrics event not reordered in no-group case" do_topdown_group_test "{$filler1,topdown-retiring,slots}" \ "slots not reordered first in single group case" do_topdown_group_test "{$filler1,slots},topdown-retiring" \ "topdown metrics event not move into slots group" do_topdown_group_test "topdown-retiring,{$filler1,slots}" \ "topdown metrics event not move into slots group last" do_topdown_group_test "{$filler1,slots},{topdown-retiring}" \ "topdown metrics group not merge into slots group" do_topdown_group_test "{topdown-retiring},{$filler1,slots}" \ "topdown metrics group not merge into slots group last" do_topdown_group_test "{$filler1,slots},$filler2,topdown-retiring" \ "non-adjacent topdown metrics group not move into slots group" do_topdown_group_test "$filler2,topdown-retiring,{$filler1,slots}" \ "non-adjacent topdown metrics group not move into slots group last" do_topdown_group_test "{$filler1,slots},{$filler2,topdown-retiring}" \ "metrics group not merge into slots group" do_topdown_group_test "{$filler1,topdown-retiring},{$filler2,slots}" \ "metrics group not merge into slots group last" done if test "$td_err" -eq 0 then echo "Topdown event group test [Success]" else err="$td_err" fi } test_topdown_weak_groups() { # Weak groups break if the perf_event_open of multiple grouped events # fails. Breaking a topdown group causes the events to fail. Test a very large # grouping to see that the topdown events aren't broken out. echo "Topdown weak groups test" ok_grouping="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring},branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references" if ! perf stat --no-merge -e "$ok_grouping" true > /dev/null 2>&1 then echo "Topdown weak groups test [Skipped event parsing failed]" return fi group_needs_break="{slots,topdown-bad-spec,topdown-be-bound,topdown-fe-bound,topdown-retiring,branch-instructions,branch-misses,bus-cycles,cache-misses,cache-references,cpu-cycles,instructions,mem-loads,mem-stores,ref-cycles,cache-misses,cache-references}:W" if perf stat --no-merge -e "$group_needs_break" true 2>&1 | grep -E -q "<not supported>" then echo "Topdown weak groups test [Failed events not supported]" err=1 return fi echo "Topdown weak groups test [Success]" } test_cputype() { # Test --cputype argument. echo "cputype test" # Bogus PMU should fail. if perf stat --cputype="123" -e instructions true > /dev/null 2>&1 then echo "cputype test [Bogus PMU didn't fail]" err=1 return fi # Find a known PMU for cputype. pmu="" devs="/sys/bus/event_source/devices" for i in $devs/cpu $devs/cpu_atom $devs/armv8_pmuv3_0 $devs/armv8_cortex_* do i_base=$(basename "$i") if test -d "$i" then pmu="$i_base" break fi if perf stat -e "$i_base/instructions/" true > /dev/null 2>&1 then pmu="$i_base" break fi done if test "x$pmu" = "x" then echo "cputype test [Skipped known PMU not found]" return fi # Test running with cputype produces output. if ! perf stat --cputype="$pmu" -e instructions true 2>&1 | grep -E -q "instructions" then echo "cputype test [Failed count missed with given filter]" err=1 return fi echo "cputype test [Success]" } test_hybrid() { # Test the default stat command on hybrid devices opens one cycles event for # each CPU type. echo "hybrid test" # Count the number of core PMUs, assume minimum of 1 pmus=$(ls /sys/bus/event_source/devices/*/cpus 2>/dev/null | wc -l) if [ "$pmus" -lt 1 ] then pmus=1 fi # Run default Perf stat cycles_events=$(perf stat -a -- sleep 0.1 2>&1 | grep -E "/cpu-cycles/[uH]*| cpu-cycles[:uH]* " | wc -l) # The expectation is that default output will have a cycles events on each # hybrid PMU. In situations with no cycles PMU events, like virtualized, this # can fall back to task-clock and so the end count may be 0. Fail if neither # condition holds. if [ "$pmus" -ne "$cycles_events" ] && [ "0" -ne "$cycles_events" ] then echo "hybrid test [Found $pmus PMUs but $cycles_events cycles events. Failed]" err=1 return fi echo "hybrid test [Success]" } test_stat_cpu() { echo "stat -C <cpu> test" # Test the full online CPU list (ranges and lists) online_cpus=$(cat /sys/devices/system/cpu/online) if ! perf stat -C "$online_cpus" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpus $online_cpus]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpus $online_cpus]" cat "${stat_output}" err=1 return fi # Test each individual online CPU for cpu_dir in /sys/devices/system/cpu/cpu[0-9]*; do cpu=${cpu_dir##*/cpu} # Check if online if [ -f "$cpu_dir/online" ] && [ "$(cat "$cpu_dir/online")" -eq 0 ] then continue fi if ! perf stat -C "$cpu" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpu $cpu]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpu $cpu]" cat "${stat_output}" err=1 return fi done # Test synthetic list and range if cpu0 and cpu1 are online c0_online=0 c1_online=0 if [ -d "/sys/devices/system/cpu/cpu0" ] then if [ ! -f "/sys/devices/system/cpu/cpu0/online" ] || [ "$(cat /sys/devices/system/cpu/cpu0/online)" -eq 1 ] then c0_online=1 fi fi if [ -d "/sys/devices/system/cpu/cpu1" ] then if [ ! -f "/sys/devices/system/cpu/cpu1/online" ] || [ "$(cat /sys/devices/system/cpu/cpu1/online)" -eq 1 ] then c1_online=1 fi fi if [ $c0_online -eq 1 ] && [ $c1_online -eq 1 ] then # Test list "0,1" if ! perf stat -C "0,1" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpus 0,1]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpus 0,1]" cat "${stat_output}" err=1 return fi # Test range "0-1" if ! perf stat -C "0-1" -a true > "${stat_output}" 2>&1 then echo "stat -C <cpu> test [Failed - command failed for cpus 0-1]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats for" "${stat_output}" then echo "stat -C <cpu> test [Failed - missing output for cpus 0-1]" cat "${stat_output}" err=1 return fi fi echo "stat -C <cpu> test [Success]" } test_stat_no_aggr() { echo "stat -A test" if ! perf stat -A -a true > "${stat_output}" 2>&1 then echo "stat -A test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "CPU" "${stat_output}" then echo "stat -A test [Failed - missing CPU column]" cat "${stat_output}" err=1 return fi echo "stat -A test [Success]" } test_stat_detailed() { echo "stat -d test" if ! perf stat -d true > "${stat_output}" 2>&1 then echo "stat -d test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -d test [Failed - missing output]" cat "${stat_output}" err=1 return fi if ! perf stat -dd true > "${stat_output}" 2>&1 then echo "stat -dd test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -dd test [Failed - missing output]" cat "${stat_output}" err=1 return fi if ! perf stat -ddd true > "${stat_output}" 2>&1 then echo "stat -ddd test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -ddd test [Failed - missing output]" cat "${stat_output}" err=1 return fi echo "stat -d test [Success]" } test_stat_repeat() { echo "stat -r test" if ! perf stat -r 2 true > "${stat_output}" 2>&1 then echo "stat -r test [Failed - command failed]" cat "${stat_output}" err=1 return fi if ! grep -E -q "\([[:space:]]*\+-.*%[[:space:]]*\)" "${stat_output}" then echo "stat -r test [Failed - missing variance]" cat "${stat_output}" err=1 return fi echo "stat -r test [Success]" } test_stat_pid() { echo "stat -p test" sleep 1 & pid=$! if ! perf stat -p $pid > "${stat_output}" 2>&1 then echo "stat -p test [Failed - command failed]" cat "${stat_output}" err=1 kill $pid 2>/dev/null || true wait $pid 2>/dev/null || true return fi if ! grep -E -q "Performance counter stats" "${stat_output}" then echo "stat -p test [Failed - missing output]" cat "${stat_output}" err=1 else echo "stat -p test [Success]" fi kill $pid 2>/dev/null || true wait $pid 2>/dev/null || true } test_stat_delay() { echo "stat -D test" if ! env LC_ALL=C perf stat -D 1000 -e duration_time sleep 2 > "${stat_output}" 2>&1 then echo "stat -D test [Failed - command failed]" cat "${stat_output}" err=1 return fi duration=$(grep "duration_time" "${stat_output}" | awk '{print $1}' | tr -d ',') elapsed=$(grep "seconds time elapsed" "${stat_output}" | awk '{print $1}') if [ -z "$duration" ] || [ -z "$elapsed" ] then