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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b88b14db21
To be used with -S or -s, using just this new option implies -s,
examples:
# perf trace --errno-summary sleep 1
Summary of events:
sleep (10793), 80 events, 93.0%
syscall calls errors total min avg max stddev
(msec) (msec) (msec) (msec) (%)
--------------- -------- ------ -------- --------- --------- --------- ------
nanosleep 1 0 1000.427 1000.427 1000.427 1000.427 0.00%
mmap 8 0 0.026 0.002 0.003 0.005 9.18%
close 5 0 0.018 0.001 0.004 0.009 48.97%
mprotect 4 0 0.017 0.003 0.004 0.006 16.49%
openat 3 0 0.012 0.003 0.004 0.005 9.41%
munmap 1 0 0.010 0.010 0.010 0.010 0.00%
brk 4 0 0.005 0.001 0.001 0.002 22.77%
read 4 0 0.005 0.001 0.001 0.002 22.33%
access 1 1 0.004 0.004 0.004 0.004 0.00%
ENOENT: 1
fstat 3 0 0.004 0.001 0.001 0.002 17.18%
lseek 3 0 0.003 0.001 0.001 0.001 11.62%
arch_prctl 2 1 0.002 0.001 0.001 0.001 3.32%
EINVAL: 1
execve 1 0 0.000 0.000 0.000 0.000 0.00%
#
Works as well together with --failure and -S, i.e. collect the stats and
show just the syscalls that failed:
# perf trace --failure -S --errno-summary sleep 1
0.032 arch_prctl(option: 0x3001, arg2: 0x7fffdb11b580) = -1 EINVAL (Invalid argument)
0.045 access(filename: "/etc/ld.so.preload", mode: R) = -1 ENOENT (No such file or directory)
Summary of events:
sleep (10806), 80 events, 93.0%
syscall calls errors total min avg max stddev
(msec) (msec) (msec) (msec) (%)
--------------- -------- ------ -------- --------- --------- --------- ------
nanosleep 1 0 1000.094 1000.094 1000.094 1000.094 0.00%
mmap 8 0 0.026 0.002 0.003 0.005 9.06%
close 5 0 0.018 0.001 0.004 0.010 49.58%
mprotect 4 0 0.017 0.003 0.004 0.006 17.56%
openat 3 0 0.014 0.004 0.005 0.006 12.29%
munmap 1 0 0.010 0.010 0.010 0.010 0.00%
brk 4 0 0.005 0.001 0.001 0.002 22.75%
read 4 0 0.005 0.001 0.001 0.002 17.19%
access 1 1 0.005 0.005 0.005 0.005 0.00%
ENOENT: 1
fstat 3 0 0.004 0.001 0.001 0.002 21.66%
lseek 3 0 0.003 0.001 0.001 0.001 11.71%
arch_prctl 2 1 0.002 0.001 0.001 0.001 2.66%
EINVAL: 1
execve 1 0 0.000 0.000 0.000 0.000 0.00%
#
Suggested-by: Andi Kleen <ak@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Luis Cláudio Gonçalves <lclaudio@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-l0mjwczkpouov7lss5zn8d9h@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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| .. | ||
| android.txt | ||
| asciidoc.conf | ||
| asciidoctor-extensions.rb | ||
| build-xed.txt | ||
| Build.txt | ||
| callchain-overhead-calculation.txt | ||
| db-export.txt | ||
| examples.txt | ||
| intel-bts.txt | ||
| intel-pt.txt | ||
| itrace.txt | ||
| jit-interface.txt | ||
| jitdump-specification.txt | ||
| Makefile | ||
| manpage-1.72.xsl | ||
| manpage-base.xsl | ||
| manpage-bold-literal.xsl | ||
| manpage-normal.xsl | ||
| manpage-suppress-sp.xsl | ||
| perf-annotate.txt | ||
| perf-archive.txt | ||
| perf-bench.txt | ||
| perf-buildid-cache.txt | ||
| perf-buildid-list.txt | ||
| perf-c2c.txt | ||
| perf-config.txt | ||
| perf-data.txt | ||
| perf-diff.txt | ||
| perf-evlist.txt | ||
| perf-ftrace.txt | ||
| perf-help.txt | ||
| perf-inject.txt | ||
| perf-kallsyms.txt | ||
| perf-kmem.txt | ||
| perf-kvm.txt | ||
| perf-list.txt | ||
| perf-lock.txt | ||
| perf-mem.txt | ||
| perf-probe.txt | ||
| perf-record.txt | ||
| perf-report.txt | ||
| perf-sched.txt | ||
| perf-script-perl.txt | ||
| perf-script-python.txt | ||
| perf-script.txt | ||
| perf-stat.txt | ||
| perf-test.txt | ||
| perf-timechart.txt | ||
| perf-top.txt | ||
| perf-trace.txt | ||
| perf-version.txt | ||
| perf.data-file-format.txt | ||
| perf.txt | ||
| perfconfig.example | ||
| tips.txt | ||