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| author | Vincent Guittot <vincent.guittot@linaro.org> | 2015-08-24 14:18:28 +0200 |
|---|---|---|
| committer | Vincent Guittot <vincent.guittot@linaro.org> | 2015-08-24 14:18:28 +0200 |
| commit | dc08dc380cb32c7a9341176709334a363df3dcd5 (patch) | |
| tree | 9328c10f12b83f6e5a77c8fd08c4d83d843343bc /doc | |
| parent | 3d5b0ebcd48b818b987802fd216121b66113a305 (diff) | |
workgen: Add IO-bounded and memory-bounded eventslinaro-v1.0
Add 2 new kind of event for running a memory or a io bounded load.
"mem" name for a load is memory bounded, and "iorun" name for a load is
io bounded. The default file to be written to create the load is
/dev/null and the device/file could be specified with "io_device" key in
"global" section. The size of per-thread memory buffer to create
IO/memory load could also be specified with "mem_buffer_size" in the
same section.
Signed-off-by: Pi-Cheng Chen <pi-cheng.chen@linaro.org>
[ replace Text by String in tutorial.txt]
Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/examples/tutorial/example6.json | 29 | ||||
| -rw-r--r-- | doc/tutorial.txt | 18 |
2 files changed, 47 insertions, 0 deletions
diff --git a/doc/examples/tutorial/example6.json b/doc/examples/tutorial/example6.json new file mode 100644 index 0000000..06899eb --- /dev/null +++ b/doc/examples/tutorial/example6.json @@ -0,0 +1,29 @@ +{ + /* + * Simple use case which creates CPU-, memory-, + * and IO-bouned load for 2 seconds duration. + */ + "tasks" : { + "thread0" : { + "instance" : 1, + "loop" : -1, + "run" : 1000, + "mem" : 1000, + "sleep" : 5000, + "iorun" : 100000 + } + }, + "global" : { + "duration" : 2, + "calibration" : "CPU0", + "default_policy" : "SCHED_OTHER", + "pi_enabled" : false, + "lock_pages" : false, + "logdir" : "./", + "log_basename" : "rt-app2", + "ftrace" : true, + "gnuplot" : true, + "io_device" : "/dev/null", + "mem_buffer_size" : 1048576 + } +} diff --git a/doc/tutorial.txt b/doc/tutorial.txt index b2b0971..9c47178 100644 --- a/doc/tutorial.txt +++ b/doc/tutorial.txt @@ -81,6 +81,14 @@ case. Default value is False. * gnuplot : Boolean. if True, it will create a gnu plot compatible file for each threads (see gnuplot section for more details). Default value is False. +"io_device" : Text. Path to the file which will be written to create IO-bounded +busy loop. Specify it carefully since it might damage the specified file. +Default value is "/dev/null". + +"mem_buffer_size" : Integer. The size of per-thread memory buffer in byte being +used to create IO-bounded and memory-bounded busy loop. Default value is +4194304(4MB). + *** default global object: "global" : { "duration" : -1, @@ -93,6 +101,8 @@ each threads (see gnuplot section for more details). Default value is False. "log_basename" : "rt-app", "ftrace" : false, "gnuplot" : false, + "io_device" : "/dev/null" + "mem_buffer_size" : 4194304 } **** tasks object **** @@ -187,6 +197,14 @@ frequency or the compute capacity of the CPU. * sleep : Integer. Emulate the sleep of a task. The duration is defined in usec. +* mem : Integer. Emulate the memory write operation. The value defines the size +in byte to be written into the memory buffer. The size of the memory buffer is +defined by "mem_buffer_size" in "global" object. + +* iorun : Integer. Emulate the IO write operation. The value defined the size +in byte to be write into the IO device specified by "io_device" in "global" +object. + * timer : Object. Emulate the wake up of the thread by a timer. Timer differs from sleep event by the start time of the timer duration. Sleep duration starts at the beginning of the sleep event whereas timer duration starts at the end of |