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74 lines
1.9 KiB
Text
74 lines
1.9 KiB
Text
bers(8)
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=======
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:doctype: manpage
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:man source: bers
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:man version: 0.0.1
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:man manual: bers manual
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NAME
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----
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bers - go berserk and eat computer resources
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SYNOPSIS
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--------
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*bers* ['options']
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DESCRIPTION
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-----------
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*bers* is a command line utility aimed to eat resources of the computer it runs on.
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Idea behind is to create a number of tasks which would trash computer resources
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eating cpu and i/o time.
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OPTIONS
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-------
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*-t*, *--tasks* 'num'::
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Create 'num' number of forks.
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*-d*, *--dir* 'dir'::
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Path to 'dir' directory where temporary files will be created to load
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I/O subsystem.
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*-f*, *--files* 'num'::
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Create 'num' files in each task.
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*-m*, *--memory* 'num'::
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Allocate 'num' megabytes of memory for every task.
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*--mem-chunks* 'num'::
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Allocate memory for each task not as one slab but split
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it into 'num' equal parts.
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*--mem-fill* 'mode'::
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Touch (write) into allocated memory once task is created. The
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'mode' might be one of the following: 'all' -- write every
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single byte of the memory, 'light' -- write into first bytes
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of first page of the allocated memory chunk, 'dirtify' -- write
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into every page of every allocated chunk.
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*--mem-cycle* 'mode'::
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Same as *--mem-fill*, but 'mode' taken into account while
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task is cycling. By default each cycle initiated per one second.
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*--refresh* 'second'::
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Refresh load state of every task each 'second'. By refsresh
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here means to dirtify memory and file contents.
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*--file-size* 'bytes'::
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Write 'bytes' of data into each file on every refresh cycle.
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EXAMPLE
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-------
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bers -d test/bers/dump -t 256 -m 54 -c 4 -f 200 --mem-fill dirtify --mem-cycle dirtify
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We generate 256 tasks with each allocating 54 megabytes of memory split
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equally into 4 memory areas. Each task opens 200 files. On creation and
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cycling we touch every page of every memory area.
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AUTHOR
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------
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OpenVZ team.
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COPYRIGHT
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---------
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Copyright \(C) 2014, Parallels Inc.
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