perf: Error: unknown switch `c'

[intel]

perf: Error: unknown switch `c'

[zhijianli88]

Thanks for your reporting.

Looks there are some many errors/warnings on you environment
what's your distribution.

lkp may need changes to adapt to perf from Linux 5.1:

root@33c9bf576e93:~/lkp-tests# lkp run  ./hackbench-socket-threads-50%.yaml
2019-03-28 10:46:37 +0000 WARN -- skip non-executable /root/lkp-tests/stats/build-ceph
/root/lkp-tests/monitors/vmstat: 5: /root/lkp-tests/monitors/vmstat: vmstat: not found

i will fix this soon

/root/lkp-tests/monitors/heartbeat: 5: /root/lkp-tests/monitors/heartbeat: vmstat: not found
/root/lkp-tests/monitors/heartbeat: 23: exec: vmstat: not found
/root/lkp-tests/monitors/vmstat: 23: exec: vmstat: not found
/root/lkp-tests/monitors/mpstat: 27: /root/lkp-tests/monitors/mpstat: /lkp/benchmarks/sysstat/usr/local/bin/mpstat: not found

have you installed ./hackbench-socket-threads-50%.yaml successfully ?
mpstat should be installed when you install this job i think

dmesg: read kernel buffer failed: Operation not permitted
dmesg: read kernel buffer failed: Operation not permitted
/root/lkp-tests/monitors/perf-stat: 89: /root/lkp-tests/monitors/perf-stat: cannot create /proc/sys/kernel/nmi_watchdog: Read-only file system
Error: unknown switch `c'

i will have a look.

Usage: perf stat [] []

root@33c9bf576e93:~/lkp-tests# /lkp/benchmarks/perf/perf --version
perf version 5.1.rc2.g14c741

[zhijianli88]

Figure out the FBC

75998bb263bf48c1c85d78cd2d2f3a97d3747cab is the first bad commit
commit 75998bb263bf48c1c85d78cd2d2f3a97d3747cab
Author: Andi Kleen <[email protected]>
Date:   Thu Mar 14 15:50:01 2019 -0700

    perf stat: Fix --no-scale
    
    The -c option to enable multiplex scaling has been useless for quite
    some time because scaling is default.
    
    It's only useful as --no-scale to disable scaling. But the non scaling
    code path has bitrotted and doesn't print anything because perf output
    code relies on value run/ena information.
    
    Also even when we don't want to scale a value it's still useful to show
    its multiplex percentage.
    
    This patch:
      - Fixes help and documentation to show --no-scale instead of -c
      - Removes -c, only keeps the long option because -c doesn't support negatives.
      - Enables running/enabled even with --no-scale
      - And fixes some other problems in the no-scale output.
    
    Before:
    
      $ perf stat --no-scale -e cycles true
    
       Performance counter stats for 'true':
    
           <not counted>      cycles
    
             0.000984154 seconds time elapsed
    
    After:
    
      $ ./perf stat --no-scale -e cycles true
    
       Performance counter stats for 'true':
    
                 706,070      cycles
    
             0.001219821 seconds time elapsed
    
    Signed-off-by: Andi Kleen <[email protected]>
    Acked-by: Jiri Olsa <[email protected]>
    Tested-by: Arnaldo Carvalho de Melo <[email protected]>
    LPU-Reference: [email protected]
    Link: https://lkml.kernel.org/n/[email protected]
    Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

:040000 040000 91c6465ee19b49aa817ac0969e9328f84b74ffd3 96daf594883c98e46e79870e064e81f9f981a7c4 M	tools

[hrw]

Thanks for your reporting.

Looks there are some many errors/warnings on you environment
what's your distribution.

I used debian:buster container container as it was just quick check as one of my coworkers had issues with lkp.

So some issues may be a reason of running in Docker container instead of system installed on bare metal.

/root/lkp-tests/monitors/heartbeat: 5: /root/lkp-tests/monitors/heartbeat: vmstat: not found
/root/lkp-tests/monitors/heartbeat: 23: exec: vmstat: not found
/root/lkp-tests/monitors/vmstat: 23: exec: vmstat: not found
/root/lkp-tests/monitors/mpstat: 27: /root/lkp-tests/monitors/mpstat: /lkp/benchmarks/sysstat/usr/local/bin/mpstat: not found

have you installed ./hackbench-socket-threads-50%.yaml successfully ?
mpstat should be installed when you install this job i think

Once I got rid of turbostat installation ended without errors.