1SIGNALTEST(8)               System Manager's Manual              SIGNALTEST(8)
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NAME

6       signaltest - signal roundtrip test software
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SYNOPSIS

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

15       These programs follow the usual GNU command line syntax, with long  op‐
16       tions starting with two dashes ('--').
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18       -a, --affinity[=PROC-SET]
19              Run  threads  on  the  set  of processors given by PROC-SET.  If
20              PROC-SET is not specified, all processors will be used.  Threads
21              will be assigned to processors in the set in numeric order, in a
22              round-robin fashion.
23              The set of processors can be specified as A,B,C, or A-C,  or  A-
24              B,D-F, and so on*.  The ! character can be used to negate a set.
25              For example, !B-D means to  use  all  available  CPUs  except  B
26              through D.  The cpu numbers are the same as shown in the proces‐
27              sor field in /proc/cpuinfo.  See numa(3) for more information on
28              specifying  CPU  sets.   * Support for CPU sets requires libnuma
29              version >= 2.  For libnuma v1, PROC-SET, if specified, must be a
30              single CPU number.
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32       -b, --breaktrace=USEC
33              Send break trace command when latency > USEC
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35       -D, --duration=TIME
36              Specify a length for the test run.
37              Append 'm', 'h', or 'd' to specify minutes, hours or days.
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39       --help
40              display usage information
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42       --json=FILENAME
43              Write final results into FILENAME, JSON formatted.
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45       -l, --loops=LOOPS
46              Number of loops: default=0 (endless)
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48       -p, --priority=PRIO
49              Priority of highest priority thread
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51       -q, --quiet
52              print a summary only on exit
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54       -S, --smp
55              Set  options  for standard testing on SMP systems. Equivalent to
56              using the options: "-t -a" as well keeping any specified  prior‐
57              ity equal across all threads
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59       -t, --threads=NUM
60              number of threads: default=2
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62       -m, --mlockall
63              lock current and future memory allocations
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65       -v, --verbose
66              output values on stdout for statistics
67              format: n:c:v n=tasknum c=count v=value in us
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AUTHOR

70       signaltest was written by Thomas Gleixner <tglx@linuxtronix.de>.
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72       This manual page was originally written by
73       John Kacur <jkacur@redhat.com>
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75       Copying  and  distribution  of this file, with or without modification,
76       are permitted in any medium without royalty provided the copyright  no‐
77       tice  and this notice are preserved.  This file is offered as-is, with‐
78       out any warranty.
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82                               November 15, 2020                 SIGNALTEST(8)
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