This is the command switchtest that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAME
switchtest - Xenomai context switch test
SYNOPSIS
switchtest [options] threadspec threadspec...
DESCRIPTION
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.
OPTIONS
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 mode (invalid 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:
--help, -h
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
--nofpu, -n
disables any use of FPU instructions
Use switchtest online using onworks.net services
