1SSDD(8)                     System Manager's Manual                    SSDD(8)
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5# SPDX-License-Identifier: GPL-2.0-or-later
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NAME

8       ssdd - have a tracer do a bunch of PTRACE_SINGLESTEPs
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SYNOPSIS

11       ssdd [-f|--forks NUM] [-h|--help] [-i|--iters NUM] [--json FILENAME]
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DESCRIPTION

14       Have a tracer do a bunch of PTRACE_SINGLESTEPs against a tracee as fast
15       as possible. Create several of these tracer/tracee  pairs  and  see  if
16       they can be made to interfere with each other. The tracer waits on each
17       PTRACE_SINGLESTEP with a waitpid(2) and checks  that  waitpid's  return
18       values for correctness.
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OPTIONS

21       -f, --forks=NUM
22              number of tracer/tracee pairs to fork off.
23              Default is 10.
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25       -h, --help
26              Display usage
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28       -i, --iters=NUM
29              number  of  PTRACE_SINGLESTEP  iterations to do before declaring
30              success, for each tracer tracee pair set up.
31              Default is 10,000.
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33       --json=FILENAME
34              Write final results into FILENAME, JSON formatted.
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AUTHOR

37       ssdd was written by Joe Korty <joe.korty@concurrent-rt.com>
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39       This manual page was written by John Kacur <jkacur@redhat.com>
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44                              September 19, 2020                       SSDD(8)