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Date: Thu, 9 Jun 2022 13:37:06 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Thomas Richter <tmricht@...ux.ibm.com>,
linux390-list@...maker.boeblingen.de.ibm.com,
linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
cjense@...gle.com, sumanthk@...ux.ibm.com, svens@...ux.ibm.com,
gor@...ux.ibm.com, hca@...ux.ibm.com
Subject: Re: [PATCH] perf/test: perf test 83 fails on s390
Em Fri, Jun 03, 2022 at 01:59:59PM -0700, Ian Rogers escreveu:
> On Fri, Jun 3, 2022 at 4:33 AM Thomas Richter <tmricht@...ux.ibm.com> wrote:
> >
> > perf test -F 83 ("perf stat CSV output linter") fails on s390.
> > Reason is the wrong number of fields for certain CPU core/die/socket
> > related output.
> >
> > On x84_64 the output of command
> > # ./perf stat -x, -A -a --no-merge true
> > CPU0,1.50,msec,cpu-clock,1502781,100.00,1.052,CPUs utilized
> > CPU1,1.48,msec,cpu-clock,1476113,100.00,1.034,CPUs utilized
> > ...
> > results in 8 fields with 7 comma separators.
> >
> > On s390 the output of command
> > # ./perf stat -x, -A -a --no-merge -- true
> > 0.95,msec,cpu-clock,949800,100.00,1.060,CPUs utilized
> > ...
> > results in 7 fields with 6 comma separators. Therefore this tests
> > fails on s390. Similar issues exist for per-die and per-socket output
> > which is not supported on s390.
> >
> > I have rewritten the python program to count commas in each output line
> > into a bash function to achieve the same result. I hope this makes
> > it a bit easier.
> >
> > Output before:
> > # ./perf test -F 83
> > 83: perf stat CSV output linter :
> > Checking CSV output: no args [Success]
> > Checking CSV output: system wide [Success]
> > Checking CSV output: system wide Checking CSV output: \
> > system wide no aggregation 6.92,msec,cpu-clock,\
> > 6918131,100.00,6.972,CPUs utilized
> > ...
> > RuntimeError: wrong number of fields. expected 7 in \
> > 6.92,msec,cpu-clock,6918131,100.00,6.972,CPUs utilized
> >
> > FAILED!
> > #
> >
> > Output after:
> > # ./perf test -F 83
> > 83: perf stat CSV output linter :
> > Checking CSV output: no args [Success]
> > Checking CSV output: system wide [Success]
> > Checking CSV output: system wide Checking CSV output:\
> > system wide no aggregation [Success]
> > Checking CSV output: interval [Success]
> > Checking CSV output: event [Success]
> > Checking CSV output: per core [Success]
> > Checking CSV output: per thread [Success]
> > Checking CSV output: per die [Success]
> > Checking CSV output: per node [Success]
> > Checking CSV output: per socket [Success]
> > Ok
> > #
> >
> > Signed-off-by: Thomas Richter <tmricht@...ux.ibm.com>
>
> Acked-by: Ian Rogers <irogers@...gle.com>
Thanks, applied.
- Arnaldo
> Thanks,
> Ian
>
> > ---
> > .../tests/shell/lib/perf_csv_output_lint.py | 48 -------------
> > tools/perf/tests/shell/stat+csv_output.sh | 69 ++++++++++++-------
> > 2 files changed, 45 insertions(+), 72 deletions(-)
> > delete mode 100644 tools/perf/tests/shell/lib/perf_csv_output_lint.py
> >
> > diff --git a/tools/perf/tests/shell/lib/perf_csv_output_lint.py b/tools/perf/tests/shell/lib/perf_csv_output_lint.py
> > deleted file mode 100644
> > index 714f283cfb1b..000000000000
> > --- a/tools/perf/tests/shell/lib/perf_csv_output_lint.py
> > +++ /dev/null
> > @@ -1,48 +0,0 @@
> > -#!/usr/bin/python
> > -# SPDX-License-Identifier: GPL-2.0
> > -
> > -import argparse
> > -import sys
> > -
> > -# Basic sanity check of perf CSV output as specified in the man page.
> > -# Currently just checks the number of fields per line in output.
> > -
> > -ap = argparse.ArgumentParser()
> > -ap.add_argument('--no-args', action='store_true')
> > -ap.add_argument('--interval', action='store_true')
> > -ap.add_argument('--system-wide-no-aggr', action='store_true')
> > -ap.add_argument('--system-wide', action='store_true')
> > -ap.add_argument('--event', action='store_true')
> > -ap.add_argument('--per-core', action='store_true')
> > -ap.add_argument('--per-thread', action='store_true')
> > -ap.add_argument('--per-die', action='store_true')
> > -ap.add_argument('--per-node', action='store_true')
> > -ap.add_argument('--per-socket', action='store_true')
> > -ap.add_argument('--separator', default=',', nargs='?')
> > -args = ap.parse_args()
> > -
> > -Lines = sys.stdin.readlines()
> > -
> > -def check_csv_output(exp):
> > - for line in Lines:
> > - if 'failed' not in line:
> > - count = line.count(args.separator)
> > - if count != exp:
> > - sys.stdout.write(''.join(Lines))
> > - raise RuntimeError(f'wrong number of fields. expected {exp} in {line}')
> > -
> > -try:
> > - if args.no_args or args.system_wide or args.event:
> > - expected_items = 6
> > - elif args.interval or args.per_thread or args.system_wide_no_aggr:
> > - expected_items = 7
> > - elif args.per_core or args.per_socket or args.per_node or args.per_die:
> > - expected_items = 8
> > - else:
> > - ap.print_help()
> > - raise RuntimeError('No checking option specified')
> > - check_csv_output(expected_items)
> > -
> > -except:
> > - sys.stdout.write('Test failed for input: ' + ''.join(Lines))
> > - raise
> > diff --git a/tools/perf/tests/shell/stat+csv_output.sh b/tools/perf/tests/shell/stat+csv_output.sh
> > index 983220ef3cb4..38c26f3ef4c1 100755
> > --- a/tools/perf/tests/shell/stat+csv_output.sh
> > +++ b/tools/perf/tests/shell/stat+csv_output.sh
> > @@ -6,20 +6,41 @@
> >
> > set -e
> >
> > -pythonchecker=$(dirname $0)/lib/perf_csv_output_lint.py
> > -if [ "x$PYTHON" == "x" ]
> > -then
> > - if which python3 > /dev/null
> > - then
> > - PYTHON=python3
> > - elif which python > /dev/null
> > - then
> > - PYTHON=python
> > - else
> > - echo Skipping test, python not detected please set environment variable PYTHON.
> > - exit 2
> > - fi
> > -fi
> > +function commachecker()
> > +{
> > + local -i cnt=0 exp=0
> > +
> > + case "$1"
> > + in "--no-args") exp=6
> > + ;; "--system-wide") exp=6
> > + ;; "--event") exp=6
> > + ;; "--interval") exp=7
> > + ;; "--per-thread") exp=7
> > + ;; "--system-wide-no-aggr") exp=7
> > + [ $(uname -m) = "s390x" ] && exp=6
> > + ;; "--per-core") exp=8
> > + ;; "--per-socket") exp=8
> > + ;; "--per-node") exp=8
> > + ;; "--per-die") exp=8
> > + esac
> > +
> > + while read line
> > + do
> > + # Check for lines beginning with Failed
> > + x=${line:0:6}
> > + [ "$x" = "Failed" ] && continue
> > +
> > + # Count the number of commas
> > + x=$(echo $line | tr -d -c ',')
> > + cnt="${#x}"
> > + # echo $line $cnt
> > + [ "$cnt" -ne "$exp" ] && {
> > + echo "wrong number of fields. expected $exp in $line" 1>&2
> > + exit 1;
> > + }
> > + done
> > + return 0
> > +}
> >
> > # Return true if perf_event_paranoid is > $1 and not running as root.
> > function ParanoidAndNotRoot()
> > @@ -30,7 +51,7 @@ function ParanoidAndNotRoot()
> > check_no_args()
> > {
> > echo -n "Checking CSV output: no args "
> > - perf stat -x, true 2>&1 | $PYTHON $pythonchecker --no-args
> > + perf stat -x, true 2>&1 | commachecker --no-args
> > echo "[Success]"
> > }
> >
> > @@ -42,7 +63,7 @@ check_system_wide()
> > echo "[Skip] paranoid and not root"
> > return
> > fi
> > - perf stat -x, -a true 2>&1 | $PYTHON $pythonchecker --system-wide
> > + perf stat -x, -a true 2>&1 | commachecker --system-wide
> > echo "[Success]"
> > }
> >
> > @@ -55,14 +76,14 @@ check_system_wide_no_aggr()
> > return
> > fi
> > echo -n "Checking CSV output: system wide no aggregation "
> > - perf stat -x, -A -a --no-merge true 2>&1 | $PYTHON $pythonchecker --system-wide-no-aggr
> > + perf stat -x, -A -a --no-merge true 2>&1 | commachecker --system-wide-no-aggr
> > echo "[Success]"
> > }
> >
> > check_interval()
> > {
> > echo -n "Checking CSV output: interval "
> > - perf stat -x, -I 1000 true 2>&1 | $PYTHON $pythonchecker --interval
> > + perf stat -x, -I 1000 true 2>&1 | commachecker --interval
> > echo "[Success]"
> > }
> >
> > @@ -70,7 +91,7 @@ check_interval()
> > check_event()
> > {
> > echo -n "Checking CSV output: event "
> > - perf stat -x, -e cpu-clock true 2>&1 | $PYTHON $pythonchecker --event
> > + perf stat -x, -e cpu-clock true 2>&1 | commachecker --event
> > echo "[Success]"
> > }
> >
> > @@ -82,7 +103,7 @@ check_per_core()
> > echo "[Skip] paranoid and not root"
> > return
> > fi
> > - perf stat -x, --per-core -a true 2>&1 | $PYTHON $pythonchecker --per-core
> > + perf stat -x, --per-core -a true 2>&1 | commachecker --per-core
> > echo "[Success]"
> > }
> >
> > @@ -94,7 +115,7 @@ check_per_thread()
> > echo "[Skip] paranoid and not root"
> > return
> > fi
> > - perf stat -x, --per-thread -a true 2>&1 | $PYTHON $pythonchecker --per-thread
> > + perf stat -x, --per-thread -a true 2>&1 | commachecker --per-thread
> > echo "[Success]"
> > }
> >
> > @@ -106,7 +127,7 @@ check_per_die()
> > echo "[Skip] paranoid and not root"
> > return
> > fi
> > - perf stat -x, --per-die -a true 2>&1 | $PYTHON $pythonchecker --per-die
> > + perf stat -x, --per-die -a true 2>&1 | commachecker --per-die
> > echo "[Success]"
> > }
> >
> > @@ -118,7 +139,7 @@ check_per_node()
> > echo "[Skip] paranoid and not root"
> > return
> > fi
> > - perf stat -x, --per-node -a true 2>&1 | $PYTHON $pythonchecker --per-node
> > + perf stat -x, --per-node -a true 2>&1 | commachecker --per-node
> > echo "[Success]"
> > }
> >
> > @@ -130,7 +151,7 @@ check_per_socket()
> > echo "[Skip] paranoid and not root"
> > return
> > fi
> > - perf stat -x, --per-socket -a true 2>&1 | $PYTHON $pythonchecker --per-socket
> > + perf stat -x, --per-socket -a true 2>&1 | commachecker --per-socket
> > echo "[Success]"
> > }
> >
> > --
> > 2.36.1
> >
--
- Arnaldo
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