NAME

       signaltest - signal roundtrip test software

SYNOPSIS

       signaltest  [  -a|--affinity  NUM]  [  -b|--backtrace  USEC  ]  [-D|--duration  TIME] [-h|--help] [--json
       FILENAME] [-l|--loops LOOPS ] [-p|--prio PRIO] [-q|--quiet] [-S|--smp] [-t|--threads NUM]  [-m|--mlockall
       ] [-v|--verbose ]

OPTIONS

       These  programs  follow  the  usual  GNU  command line syntax, with long options starting with two dashes
       ('--').

       -a, --affinity[=PROC-SET]
              Run threads on the set of processors given  by  PROC-SET.   If  PROC-SET  is  not  specified,  all
              processors will be used.  Threads will be assigned to processors in the set in numeric order, in a
              round-robin fashion.
              The  set of processors can be specified as A,B,C, or A-C, or A-B,D-F, and so on*.  The ! character
              can be used to negate a set.  For example, !B-D means to use all available CPUs except  B  through
              D.   The  cpu  numbers are the same as shown in the processor field in /proc/cpuinfo.  See numa(3)
              for more information on specifying CPU sets.  * Support for CPU sets requires libnuma  version  >=
              2.  For libnuma v1, PROC-SET, if specified, must be a single CPU number.

       -b, --breaktrace=USEC
              Send break trace command when latency > USEC

       -D, --duration=TIME
              Specify a length for the test run.
              Append 'm', 'h', or 'd' to specify minutes, hours or days.

       --help
              display usage information

       --json=FILENAME
              Write final results into FILENAME, JSON formatted.

       -l, --loops=LOOPS
              Number of loops: default=0 (endless)

       -p, --priority=PRIO
              Priority of highest priority thread

       -q, --quiet
              print a summary only on exit

       -S, --smp
              Set  options for standard testing on SMP systems. Equivalent to using the options: "-t -a" as well
              keeping any specified priority equal across all threads

       -t, --threads=NUM
              number of threads: default=2

       -m, --mlockall
              lock current and future memory allocations

       -v, --verbose
              output values on stdout for statistics
              format: n:c:v n=tasknum c=count v=value in us

AUTHOR

       signaltest was written by Thomas Gleixner <tglx@linuxtronix.de>.

       This manual page was originally written by
       John Kacur <jkacur@redhat.com>

       Copying and distribution of this file, with or without modification, are permitted in any medium  without
       royalty provided the copyright notice and this notice are preserved.  This file is offered as-is, without
       any warranty.

                                                November 15, 2020                                  SIGNALTEST(8)