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45a86d017a
Add a test case for --metric-only for std, csv, json output mode using
shadow IPC metric from instructions and cycles events. It should
produce 'insn per cycle' metric.
But currently JSON output has (none) 'GHz' as well. It looks like a bug
but I don't have enough time to debug it for now so I made it pass. :(
$ perf stat --metric-only -e instructions,cycles true
Performance counter stats for 'true':
0.56
0.002127319 seconds time elapsed
0.002077000 seconds user
0.000000000 seconds sys
$ perf stat -x, --metric-only -e instructions,cycles true
0.55,,
$ perf stat -j --metric-only -e instructions,cycles true
{"insn per cycle" : "0.53", "GHz" : "none"}
$ perf test output -v
5: Test data source output : Ok
31: Sort output of hist entries : Ok
88: perf stat CSV output linter : Ok
90: perf stat JSON output linter : Ok
92: perf stat STD output linter : Ok
Tested-by: Thomas Falcon <thomas.falcon@intel.com>
Link: https://lore.kernel.org/r/20250304022837.1877845-2-namhyung@kernel.org
Suggested-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
118 lines
3.2 KiB
Bash
Executable file
118 lines
3.2 KiB
Bash
Executable file
#!/bin/bash
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# perf stat STD output linter
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# SPDX-License-Identifier: GPL-2.0
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# Tests various perf stat STD output commands for
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# default event and metricgroup
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set -e
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# shellcheck source=lib/stat_output.sh
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. "$(dirname $0)"/lib/stat_output.sh
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stat_output=$(mktemp /tmp/__perf_test.stat_output.std.XXXXX)
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event_name=(cpu-clock task-clock context-switches cpu-migrations page-faults stalled-cycles-frontend stalled-cycles-backend cycles instructions branches branch-misses)
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event_metric=("CPUs utilized" "CPUs utilized" "/sec" "/sec" "/sec" "frontend cycles idle" "backend cycles idle" "GHz" "insn per cycle" "/sec" "of all branches")
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skip_metric=("stalled cycles per insn" "tma_" "retiring" "frontend_bound" "bad_speculation" "backend_bound" "TopdownL1" "percent of slots")
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cleanup() {
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rm -f "${stat_output}"
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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function commachecker()
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{
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local prefix=1
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local -i metric_only=0
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case "$1"
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in "--interval") prefix=2
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;; "--per-thread") prefix=2
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;; "--system-wide-no-aggr") prefix=2
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;; "--per-core") prefix=3
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;; "--per-socket") prefix=3
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;; "--per-node") prefix=3
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;; "--per-die") prefix=3
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;; "--per-cache") prefix=3
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;; "--per-cluster") prefix=3
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;; "--metric-only") metric_only=1
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esac
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while read line
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do
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# Ignore initial "started on" comment.
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x=${line:0:1}
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[ "$x" = "#" ] && continue
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# Ignore initial blank line.
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[ "$line" = "" ] && continue
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# Ignore "Performance counter stats"
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x=${line:0:25}
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[ "$x" = "Performance counter stats" ] && continue
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# Ignore "seconds time elapsed" and break
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[[ "$line" == *"time elapsed"* ]] && break
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main_body=$(echo $line | cut -d' ' -f$prefix-)
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x=${main_body%#*}
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[ "$x" = "" ] && continue
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# Check metric only - if it has a non-empty result
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[ $metric_only -eq 1 ] && return 0
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# Skip metrics without event name
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y=${main_body#*#}
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for i in "${!skip_metric[@]}"; do
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[[ "$y" == *"${skip_metric[$i]}"* ]] && break
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done
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[[ "$y" == *"${skip_metric[$i]}"* ]] && continue
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# Check default event
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for i in "${!event_name[@]}"; do
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[[ "$x" == *"${event_name[$i]}"* ]] && break
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done
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[[ ! "$x" == *"${event_name[$i]}"* ]] && {
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echo "Unknown event name in $line" 1>&2
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exit 1;
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}
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# Check event metric if it exists
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[[ ! "$main_body" == *"#"* ]] && continue
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[[ ! "$main_body" == *"${event_metric[$i]}"* ]] && {
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echo "wrong event metric. expected ${event_metric[$i]} in $line" 1>&2
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exit 1;
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}
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done < "${stat_output}"
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[ $metric_only -eq 1 ] && exit 1
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return 0
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}
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perf_cmd="-o ${stat_output}"
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skip_test=$(check_for_topology)
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check_no_args "STD" "$perf_cmd"
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check_system_wide "STD" "$perf_cmd"
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check_interval "STD" "$perf_cmd"
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check_per_thread "STD" "$perf_cmd"
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check_per_node "STD" "$perf_cmd"
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check_metric_only "STD" "$perf_cmd"
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if [ $skip_test -ne 1 ]
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then
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check_system_wide_no_aggr "STD" "$perf_cmd"
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check_per_core "STD" "$perf_cmd"
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check_per_cache_instance "STD" "$perf_cmd"
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check_per_cluster "STD" "$perf_cmd"
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check_per_die "STD" "$perf_cmd"
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check_per_socket "STD" "$perf_cmd"
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else
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echo "[Skip] Skipping tests for system_wide_no_aggr, per_core, per_die and per_socket since socket id exposed via topology is invalid"
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fi
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cleanup
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exit 0
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