KLATENCY(1) Xenomai KLATENCY(1)NAME
klatency - Xenomai kernel latency test
klatency is part of the Xenomai test suite. It is a latency measurement tool dedicated to kernel-based activities. The system must run a
suitable Xenomai enabled kernel with the respective module (klat_pipe).
klatency accepts the following options:
-l <data-lines per header>
default=21, 0 to suppress headers
default=0, so ^C to end
-q supresses RTD, RTH lines if -T is used
number of testing pipe, default=auto
klatency was written by Philippe Gerum <firstname.lastname@example.org>. This man page was written by Roland Stigge <email@example.com>.
2.6.0 2008-04-19 KLATENCY(1)
Check Out this Related Man Page
SWITCHTEST(1) Xenomai SWITCHTEST(1)NAME
switchtest - Xenomai context switch test
switchtest [options] threadspec threadspec...
switchtest is part of Xenomai. It can be used to test thread context switches. switchtest creates threads of various types and attempts to
switch context between these threads, printing the count of context switches every second. A suitable Xenomai enabled kernel with the
respective module (xeno_posix) must be installed.
Each threadspec specifies the characteristics of a thread to be created:
threadspec = (rtk|rtup|rtus|rtuo)(_fp|_ufpp|_ufps)*[0-9]*
rtk for a kernel-space real-time thread
rtup for a user-space real-time thread running in primary mode
rtus for a user-space real-time thread running in secondary mode
rtuo for a user-space real-time thread oscillating between primary and secondary mode
_fp means that the created thread will have the XNFPU bit armed (only valid for rtk)
_ufpp means that the created thread will use the FPU when in primary mode0valid for rtus)
_ufps means that the created thread will use the FPU when in secondary mode (invalid for rtk and rtup)
[0-9]* specifies the ID of the CPU where the created thread will run, 0 if unspecified
Passing no threadspec is equivalent to running:
switchtest rtkN rtkN rtk_fpN rtk_fpN rtk_fp_ufppN rtk_fp_ufppN rtupN rtupN rtup_ufppN rtup_ufppN rtusN rtusN rtus_ufpsN rtus_ufpsN rtuoN
rtuoN rtuo_ufppN rtuo_ufppN rtuo_ufpsN rtuo_ufpsN rtuo_ufpp_ufpsN rtuo_ufpp_ufpsN
with N=1,...,nr_cpus, i.e. occurrences of all the arguments for each CPU
Passing only the --nofpu or -n argument is equivalent to running:
switchtest rtkN rtkN rtupN rtupN rtusN rtusN rtuoN rtuoN
similar to the above.
switchtest accepts the following options:
print usage information and exit
--lines <lines>, -l <lines>
print headers every <lines> lines
--quiet or -q
prevent this program from printing every second the count of ncontext switches
--timeout <duration>, -T <duration>
limit the test duration to <duration> seconds
disables any use of FPU instructions
switchtest was written by Philippe Gerum <firstname.lastname@example.org> and Gilles Chanteperdrix <email@example.com>. This man page was
written by Roland Stigge <firstname.lastname@example.org>.
2.6.0 2008-04-19 SWITCHTEST(1)
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