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)