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perf test: Add a test for perf timechart --tui
Test launching ttimechart through 'perf timechart --tui', the error when there are no scheduler events, the --dump output with the -P, -T and -p options, and drive the textual app headless exercising the views and key bindings. Committer testing: root@x2:/home/acme/git/perf-tools-next# perf test "perf timechart --tui (ttimechart.py) test" 167: perf timechart --tui (ttimechart.py) test : Ok === Test Summary === Passed main tests : 1 Passed subtests : 0 Skipped tests : 0 Failed tests : 0 root@x2:/home/acme/git/perf-tools-next# perf test -vv "perf timechart --tui (ttimechart.py) test" 167: perf timechart --tui (ttimechart.py) test: ---- start ---- test child forked, pid 2833475 perf timechart --tui plumbing test perf timechart --tui plumbing test [Success] ttimechart no events test ttimechart no events test [Success] ttimechart dump test ttimechart dump test [Success] ttimechart headless UI test ttimechart headless UI test [Success] ---- end(0) ---- 167: perf timechart --tui (ttimechart.py) test : Ok === Test Summary === Passed main tests : 1 Passed subtests : 0 Skipped tests : 0 Failed tests : 0 root@x2:/home/acme/git/perf-tools-next# Assisted-by: Antigravity:gemini-3.1-pro Signed-off-by: Alice Rogers <alice.mei.rogers@gmail.com> Co-developed-by: Ian Rogers <irogers@google.com> Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Alice Rogers
Arnaldo Carvalho de Melo
parent
e7a72d6919
commit
1dc462fc21
237
tools/perf/tests/shell/test_ttimechart_python.sh
Executable file
237
tools/perf/tests/shell/test_ttimechart_python.sh
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#!/bin/bash
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# perf timechart --tui (ttimechart.py) test
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# SPDX-License-Identifier: GPL-2.0
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set -e
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shelldir=$(dirname "$0")
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# shellcheck source=lib/setup_python.sh
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. "${shelldir}"/lib/setup_python.sh
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if ! perf check feature -q libtraceevent; then
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echo "Skipping test, libtraceevent is disabled"
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exit 2
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fi
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if ! "$PYTHON" -c 'import perf' > /dev/null 2>&1; then
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echo "Skipping test, perf python module not found"
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exit 2
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fi
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if ! "$PYTHON" -c 'import textual' > /dev/null 2>&1; then
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echo "Skipping test, python textual library not found"
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exit 2
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fi
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err=0
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perfdata=
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output=
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clockdata=
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cleanup() {
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[ -n "${perfdata}" ] && rm -f "${perfdata}"*
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[ -n "${clockdata}" ] && rm -f "${clockdata}"*
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rm -f "${output}"
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trap - EXIT TERM INT
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}
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trap_cleanup() {
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echo "Unexpected signal in ${FUNCNAME[1]}"
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cleanup
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exit 1
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}
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trap trap_cleanup EXIT TERM INT
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perfdata=$(mktemp /tmp/__perf_ttimechart_test.perf.data.XXXXX)
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output=$(mktemp /tmp/__perf_ttimechart_test.output.XXXXX)
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clockdata=$(mktemp /tmp/__perf_ttimechart_test.clock.data.XXXXX)
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workload() {
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for _ in 1 2 3 4 5; do
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sleep 0.01
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done
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}
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record() {
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# perf timechart record is system wide and so may need privileges,
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# fall back to recording just the workload's scheduler events.
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if perf timechart record -o "${perfdata}" -- \
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bash -c "$(declare -f workload); workload" > /dev/null 2>&1; then
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return 0
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fi
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if perf record -R -c 1 -e sched:sched_switch -e sched:sched_wakeup \
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-o "${perfdata}" -- bash -c "$(declare -f workload); workload" \
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> /dev/null 2>&1; then
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return 0
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fi
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return 1
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}
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test_plumbing() {
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echo "perf timechart --tui plumbing test"
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# A missing input file should be reported by the script launched
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# through perf script, this doesn't need a terminal.
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if perf timechart --tui -i "${perfdata}.missing" > "${output}" 2>&1; then
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echo "perf timechart --tui plumbing test [Failed: missing file not an error]"
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err=1
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return
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fi
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if ! grep -q "not found" "${output}"; then
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echo "perf timechart --tui plumbing test [Failed: script not launched]"
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cat "${output}"
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err=1
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return
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fi
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echo "perf timechart --tui plumbing test [Success]"
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}
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test_no_events() {
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echo "ttimechart no events test"
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if ! perf record -e task-clock -o "${clockdata}" -- true > /dev/null 2>&1; then
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echo "ttimechart no events test [Skipped: perf record failed]"
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return
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fi
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if perf script ttimechart -i "${clockdata}" --dump > "${output}" 2>&1; then
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echo "ttimechart no events test [Failed: expected an error]"
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err=1
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return
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fi
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if ! grep -q "no scheduler, power or I/O events" "${output}"; then
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echo "ttimechart no events test [Failed: unexpected error message]"
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cat "${output}"
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err=1
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return
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fi
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# The same should be reported when reading the data from a pipe.
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if perf record -e task-clock -o - -- true 2> /dev/null | \
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perf script ttimechart -i - --dump > "${output}" 2>&1; then
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echo "ttimechart no events test [Failed: expected an error from a pipe]"
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err=1
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return
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fi
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if ! grep -q "no scheduler, power or I/O events" "${output}"; then
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echo "ttimechart no events test [Failed: unexpected error message from a pipe]"
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cat "${output}"
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err=1
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return
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fi
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echo "ttimechart no events test [Success]"
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}
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test_dump() {
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echo "ttimechart dump test"
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if ! perf script ttimechart -i "${perfdata}" --dump > "${output}" 2>&1; then
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echo "ttimechart dump test [Failed: script failed]"
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cat "${output}"
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err=1
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return
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fi
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if ! grep -q "^Duration: .*sched events: [1-9]" "${output}" ||
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! grep -q "^CPU [0-9]*: busy" "${output}" ||
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! grep -q "^Task .*Running .*Waiting .*Blocked" "${output}" ||
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! grep -q "sleep" "${output}"; then
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echo "ttimechart dump test [Failed: unexpected output]"
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cat "${output}"
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err=1
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return
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fi
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# Tasks only shouldn't show CPUs, power only shouldn't show tasks.
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perf script ttimechart -i "${perfdata}" --dump -T > "${output}" 2>&1 || true
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if grep -q "^CPU [0-9]*: " "${output}" ||
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! grep -q "^Task .*Running .*Waiting .*Blocked" "${output}"; then
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echo "ttimechart dump test [Failed: -T output]"
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cat "${output}"
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err=1
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return
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fi
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perf script ttimechart -i "${perfdata}" --dump -P > "${output}" 2>&1 || true
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if grep -q "^Task .*Running .*Waiting .*Blocked" "${output}" ||
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! grep -q "^CPU [0-9]*: " "${output}"; then
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echo "ttimechart dump test [Failed: -P output]"
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cat "${output}"
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err=1
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return
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fi
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# Filtering on the workload shouldn't show other tasks.
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perf script ttimechart -i "${perfdata}" --dump -p sleep > "${output}" 2>&1 || true
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if ! grep -q "^sleep " "${output}" || grep -q "^bash " "${output}"; then
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echo "ttimechart dump test [Failed: -p output]"
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cat "${output}"
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err=1
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return
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fi
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echo "ttimechart dump test [Success]"
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}
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test_headless_ui() {
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echo "ttimechart headless UI test"
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# Drive the textual app without a terminal, exercising the views and
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# key bindings.
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if ! "$PYTHON" - "${perfdata}" > "${output}" 2>&1 <<'EOF'
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import asyncio
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import sys
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import ttimechart as tc
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async def run() -> None:
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# The app starts before the data is loaded in a background thread.
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app = tc.TimechartApp(sys.argv[1], False, False, [])
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async with app.run_test(size=(120, 40)) as pilot:
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for _ in range(600):
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if app.loaded:
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break
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await pilot.pause(0.1)
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if not app.loaded:
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raise RuntimeError("Timed out loading data")
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await pilot.pause()
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tabs = app.query_one(tc.TabbedContent)
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for tab in ["cpus", "tasks", "summary"]:
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tabs.active = tab
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await pilot.pause()
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await pilot.press("down", "plus", "plus", "right", "n", "p", "minus",
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"shift+right", "shift+left", "s", "w", "0")
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await pilot.pause()
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tabs.active = "summary"
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await pilot.pause()
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await pilot.press("enter")
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await pilot.pause()
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details = str(app.query_one("#details", tc.Static).render())
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if "Cursor" not in details:
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raise RuntimeError(f"Unexpected details: {details}")
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print("headless UI ok")
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asyncio.run(run())
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EOF
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then
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echo "ttimechart headless UI test [Failed: exception]"
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cat "${output}"
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err=1
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return
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fi
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if ! grep -q "headless UI ok" "${output}"; then
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echo "ttimechart headless UI test [Failed: unexpected output]"
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cat "${output}"
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err=1
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return
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fi
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echo "ttimechart headless UI test [Success]"
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}
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test_plumbing
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test_no_events
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if ! record; then
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echo "Skipping remaining tests, failed to record scheduler events (permissions?)"
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if [ $err -eq 0 ]; then
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err=2
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fi
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cleanup
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exit $err
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fi
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test_dump
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test_headless_ui
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cleanup
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exit $err
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