Re: [PATCH v7 3/3] shmem: stable directory offsets

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> On Jul 17, 2023, at 2:46 AM, kernel test robot <oliver.sang@xxxxxxxxx> wrote:
> 
> 
> hi, Chuck Lever,
> 
> we reported a 3.0% improvement of stress-ng.handle.ops_per_sec for this commit
> on
> https://lore.kernel.org/oe-lkp/202307132153.a52cdb2d-oliver.sang@xxxxxxxxx/
> 
> but now we noticed a regression, detail as below, FYI
> 
> Hello,
> 
> kernel test robot noticed a -15.5% regression of will-it-scale.per_thread_ops on:
> 
> 
> commit: a1a690e009744e4526526b2f838beec5ef9233cc ("[PATCH v7 3/3] shmem: stable directory offsets")
> url: https://github.com/intel-lab-lkp/linux/commits/Chuck-Lever/libfs-Add-directory-operations-for-stable-offsets/20230701-014925
> base: https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-everything
> patch link: https://lore.kernel.org/all/168814734331.530310.3911190551060453102.stgit@xxxxxxxxxxxxxxxxxxxxx/
> patch subject: [PATCH v7 3/3] shmem: stable directory offsets
> 
> testcase: will-it-scale
> test machine: 104 threads 2 sockets (Skylake) with 192G memory
> parameters:
> 
> nr_task: 16
> mode: thread
> test: unlink2
> cpufreq_governor: performance
> 
> 
> In addition to that, the commit also has significant impact on the following tests:
> 
> +------------------+-------------------------------------------------------------------------------------------------+
> | testcase: change | will-it-scale: will-it-scale.per_thread_ops -40.0% regression                                   |
> | test machine     | 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @ 3.00GHz (Cascade Lake) with 128G memory |
> | test parameters  | cpufreq_governor=performance                                                                    |
> |                  | mode=thread                                                                                     |
> |                  | nr_task=16                                                                                      |
> |                  | test=unlink2                                                                                    |
> +------------------+-------------------------------------------------------------------------------------------------+
> | testcase: change | stress-ng: stress-ng.handle.ops_per_sec 3.0% improvement                                        |
> | test machine     | 36 threads 1 sockets Intel(R) Core(TM) i9-9980XE CPU @ 3.00GHz (Skylake) with 32G memory        |
> | test parameters  | class=filesystem                                                                                |
> |                  | cpufreq_governor=performance                                                                    |
> |                  | disk=1SSD                                                                                       |
> |                  | fs=ext4                                                                                         |
> |                  | nr_threads=10%                                                                                  |
> |                  | test=handle                                                                                     |
> |                  | testtime=60s                                                                                    |
> +------------------+-------------------------------------------------------------------------------------------------+
> 
> 
> If you fix the issue in a separate patch/commit (i.e. not just a new version of
> the same patch/commit), kindly add following tags
> | Reported-by: kernel test robot <oliver.sang@xxxxxxxxx>
> | Closes: https://lore.kernel.org/oe-lkp/202307171436.29248fcf-oliver.sang@xxxxxxxxx
> 
> 
> Details are as below:
> -------------------------------------------------------------------------------------------------->
> 
> 
> To reproduce:
> 
>        git clone https://github.com/intel/lkp-tests.git
>        cd lkp-tests
>        sudo bin/lkp install job.yaml           # job file is attached in this email

I'm trying to reproduce the regression here, but the reproducer fails
at this step with:

==> Installing package will-it-scale with /export/xfs/lkp-tests/sbin/pacman-LKP -U...
warning: source_date_epoch_from_changelog set but %changelog is missing
Executing(%install): /bin/sh -e /var/tmp/rpm-tmp.Py4eQi
+ umask 022
+ cd /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILD
+ '[' /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64 '!=' / ']'
+ rm -rf /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64
++ dirname /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64
+ mkdir -p /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT
+ mkdir /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64
+ CFLAGS='-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4'
+ export CFLAGS
+ CXXFLAGS='-march=x86-64 -mtune=generic -O2 -pipe -fstack-protector-strong --param=ssp-buffer-size=4'
+ export CXXFLAGS
+ FFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64  -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules'
+ export FFLAGS
+ FCFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1  -m64  -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -I/usr/lib64/gfortran/modules'
+ export FCFLAGS
+ LDFLAGS=-Wl,-O1,--sort-common,--as-needed,-z,relro
+ export LDFLAGS
+ LT_SYS_LIBRARY_PATH=/usr/lib64:
+ export LT_SYS_LIBRARY_PATH
+ CC=gcc
+ export CC
+ CXX=g++
+ export CXX
+ cp -a /export/xfs/lkp-tests/programs/will-it-scale/pkg/will-it-scale-lkp/lkp /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64
+ /usr/lib/rpm/check-buildroot
+ /usr/lib/rpm/redhat/brp-ldconfig
+ /usr/lib/rpm/brp-compress
+ /usr/lib/rpm/brp-strip /usr/bin/strip
+ /usr/lib/rpm/brp-strip-comment-note /usr/bin/strip /usr/bin/objdump
/usr/bin/objdump: '/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/writeseek2/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/dup1_threads': No such file
/usr/bin/strip: '/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/writeseek2/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/dup1_threads': No such file
/usr/bin/objdump: '/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x8/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/brk1_processes': No such file
/usr/bin/strip: '/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x8/export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/brk1_processes': No such file
/usr/bin/objdump: '/export/xfs/lkp-tests/programs/will-it-sc_processes': No such file
/usr/bin/strip: '/export/xfs/lkp-tests/programs/will-it-sc_processes': No such file
/usr/bin/objdump: '6_64/lkp/benchmarks/will-it-scale/pread2_threads': No such file
/usr/bin/strip: '6_64/lkp/benchmarks/will-it-scale/pread2_threads': No such file
/usr/bin/objdump: 'ale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/poll2_processes': No such file
/usr/bin/strip: 'ale/pkg/rpm_build/BUILDROOT/will-it-scale-LKP-1-1.x86_64/lkp/benchmarks/will-it-scale/poll2_processes': No such file
+ /usr/lib/rpm/redhat/brp-strip-lto /usr/bin/strip
+ /usr/lib/rpm/brp-strip-static-archive /usr/bin/strip
+ /usr/lib/rpm/check-rpaths
+ /usr/lib/rpm/redhat/brp-mangle-shebangs
mangling shebang in /lkp/benchmarks/python3/bin/python3.8-config from /bin/sh to #!/usr/bin/sh
*** ERROR: ambiguous python shebang in /lkp/benchmarks/python3/lib/python3.8/encodings/rot_13.py: #!/usr/bin/env python. Change it to python3 (or python2) explicitly.
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/lib2to3/pgen2/token.py from /usr/bin/env python3 to #!/usr/bin/python3
*** ERROR: ambiguous python shebang in /lkp/benchmarks/python3/lib/python3.8/lib2to3/tests/data/different_encoding.py: #!/usr/bin/env python. Change it to python3 (or python2) explicitly.
*** ERROR: ambiguous python shebang in /lkp/benchmarks/python3/lib/python3.8/lib2to3/tests/data/false_encoding.py: #!/usr/bin/env python. Change it to python3 (or python2) explicitly.
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/lib2to3/tests/pytree_idempotency.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/config-3.8-x86_64-linux-gnu/makesetup from /bin/sh to #!/usr/bin/sh
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/config-3.8-x86_64-linux-gnu/install-sh from /bin/sh to #!/usr/bin/sh
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/ctypes/macholib/fetch_macholib from /bin/sh to #!/usr/bin/sh
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/bytedesign.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/clock.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/forest.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/fractalcurves.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/lindenmayer.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/minimal_hanoi.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/paint.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/peace.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/penrose.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/planet_and_moon.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/tree.py from /usr/bin/env python3 to #!/usr/bin/python3
*** WARNING: ./lkp/benchmarks/python3/lib/python3.8/turtledemo/two_canvases.py is executable but has no shebang, removing executable bit
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/turtledemo/yinyang.py from /usr/bin/env python3 to #!/usr/bin/python3
*** WARNING: ./lkp/benchmarks/python3/lib/python3.8/idlelib/idle.bat is executable but has no shebang, removing executable bit
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/idlelib/pyshell.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/test/ziptestdata/exe_with_z64 from /bin/bash to #!/usr/bin/bash
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/test/ziptestdata/exe_with_zip from /bin/bash to #!/usr/bin/bash
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/test/ziptestdata/header.sh from /bin/bash to #!/usr/bin/bash
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/test/bisect_cmd.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/test/curses_tests.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/test/regrtest.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/test/re_tests.py from /usr/bin/env python3 to #!/usr/bin/python3
*** WARNING: ./lkp/benchmarks/python3/lib/python3.8/test/test_dataclasses.py is executable but has no shebang, removing executable bit
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/base64.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/cProfile.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/pdb.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/platform.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/profile.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/quopri.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/smtpd.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/smtplib.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/tabnanny.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/tarfile.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/timeit.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/trace.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/uu.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/python3/lib/python3.8/webbrowser.py from /usr/bin/env python3 to #!/usr/bin/python3
mangling shebang in /lkp/benchmarks/will-it-scale/runalltests from /bin/sh to #!/usr/bin/sh
error: Bad exit status from /var/tmp/rpm-tmp.Py4eQi (%install)

RPM build warnings:
    source_date_epoch_from_changelog set but %changelog is missing

RPM build errors:
    Bad exit status from /var/tmp/rpm-tmp.Py4eQi (%install)
error: open of /export/xfs/lkp-tests/programs/will-it-scale/pkg/rpm_build/RPMS/will-it-scale-LKP.rpm failed: No such file or directory
==> WARNING: Failed to install built package(s).
[cel@manet lkp-tests]$

I'm on Fedora 38 x86_64.


--
Chuck Lever







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