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Top Forums Shell Programming and Scripting find restricted search to some directories Post 302484814 by radoulov on Monday 3rd of January 2011 10:11:00 AM
Old 01-03-2011
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mbw(1)							      General Commands Manual							    mbw(1)

NAME
mbw - Memory BandWidth benchmark SYNOPSIS
mbw [options] arraysize_in_MiB DESCRIPTION
mbw determines available memory bandwidth by copying large arrays of data in memory. OPTIONS
-q Quiet; suppress informational messages. -a Suppress printing the average of each test. -n <number> Select number of loops per test -t <number> Select tests to be run. If no -t parameters are given the default is to run all tests. -t0: memcpy() test, -t1: dumb (b[i]=a[i] style) test, -t2: memcpy() with arbitrary block size -b <bytes> Block size in bytes for -t2. -h Show quick help. USAGE
mbw will allocate two arraysize arrays in memory and copy one to the other. Reported 'bandwidth' is the amount of data copied over the time this operation took. Obviously mbw needs twice arraysize MiBytes (1024*1024 bytes) of physical memory - you'd better switch off swap or otherwise make sure no paging occurs. Needless to say that it should not be run on a busy system. TODO
Multiple thread support. Better configurability, including using getopt() for parsing arguments. AUTHOR
andras.horvath@gmail.com memory bandwidth benchmark Apr 26, 2006 mbw(1)
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