pipe.job

#
# pipe class stressors:
#   various options have been commented out, one can remove the
#   proceeding comment to enable these options if required.

#
# run the following tests in parallel or sequentially
#
run sequential
# run parallel

#
# aggressive:
#   enables more file, cache and memory aggressive options. This may
#   slow tests down, increase latencies and  reduce  the  number  of
#   bogo  ops as well as changing the balance of user time vs system
#   time used depending on the type of stressor being used.
#
# aggressive

#
# ignite-cpu:
#   alter kernel controls to try and maximize the CPU. This requires
#   root  privilege  to alter various /sys interface controls.  Cur‐
#   rently this only works for Intel P-State enabled x86 systems  on
#   Linux.
#
# ignite-cpu

#
# keep-name:
#   by  default,  stress-ng  will  attempt to change the name of the
#   stress processes according to their functionality;  this  option
#   disables  this and keeps the process names to be the name of the
#   parent process, that is, stress-ng.
#
# keep-name

#
# metrics-brief:
#   enable metrics and only output metrics that are non-zero.
#
metrics-brief

#
# verbose
#   show all debug, warnings and normal information output.
#
verbose

#
# run each of the tests for 60 seconds
#  stop stress test after N seconds. One can also specify the units
#  of time in seconds, minutes, hours, days or years with the  suf‐
#  fix s, m, h, d or y.
#
timeout 60s

#
# per stressor options start here
#

#
# fifo stressor options:
#   start  N  workers  that exercise a named pipe by transmitting 64
#   bit integers.
#
fifo 0			# 0 means 1 stressor per CPU
# fifo-ops 1000000	# stop after 1000000 bogo ops

#
# pipe stressor options:
#   start  N  workers  that  perform  large pipe writes and reads to
#   exercise pipe I/O.  This exercises memory  write  and  reads  as
#   well  as  context  switching.   Each worker has two processes, a
#   reader and a writer.
#
pipe 0                  # 0 means 1 stressor per CPU
# pipe-ops 1000000      # stop after 1000000 bogo ops
# pipe-data-size 4K     # pipe data transfer size
# pipe-size 512         # pipe size

#
# sendfile stressor options:
#   start N workers that send an empty file to /dev/null. This oper‐
#   ation spends nearly all the time in  the  kernel.   The  default
#   sendfile size is 4MB.  The sendfile options are for Linux only.
#
sendfile 0		# 0 means 1 stressor per CPU
# sendfile-ops 1000000	# stop after 1000000 bogo ops

#
# splice stressor options:
#   move data from /dev/zero to /dev/null through a pipe without any
#   copying  between  kernel  address  space  and user address space
#   using splice(2). This is only available for Linux.
#
splice 0		# 0 means 1 stressor per CPU
# splice-ops 1000000	# stop after 1000000 bogo ops
# splice-bytes 64K	# transfer 64K per splice call

#
# tee stressor options:
#   move  data  from  a  writer  process to a reader process through
#   pipes and  to  /dev/null  without  any  copying  between  kernel
#   address  space and user address space using tee(2). This is only
#   available for Linux.
#
tee 0			# 0 means 1 stressor per CPU
# tee-ops 1000000	# stop after 1000000 bogo ops

#
# vm-splice stressor options:
#   move  data  from  memory to /dev/null through a pipe without any
#   copying between kernel address  space  and  user  address  space
#   using  vmsplice(2)  and  splice(2).   This is only available for
#   Linux.
#
vm-splice 0		# 0 means 1 stressor per CPU
# vm-splice-ops 0	# stop after 1000000 bogo ops
# vm-splice-bytes 64K	# transfer 64K per vmsplice call