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BW_MMAP_RD(8) LMBENCH BW_MMAP_RD(8) NAME bw_mmap_rd - time the reading and summing of a file SYNOPSIS bw_mmap_rd [ -P <parallelism> ] [ -W <warmups> ] [ -N <repetitions> ] size file DESCRIPTION bw_mmap_rd creates a memory mapping to the file and then reads the map- ping in an unrolled loop similar to that used in bw_mem_rd(8). The benchmark is intended to be used on a file that is in memory, i.e., the benchmark is a reread benchmark. Other file benchmarking can be done with lmdd(8). The size specification may end with ``k'' or ``m'' to mean kilobytes (* 1024) or megabytes (* 1024 * 1024). OUTPUT Output format is "%0.2f %.2f\n", megabytes, megabytes_per_second, i.e., 8.00 25.33 MEMORY UTILIZATION This benchmark should move approximately the reported amount of memory. ACKNOWLEDGEMENT Funding for the development of this tool was provided by Sun Microsys- tems Computer Corporation. SEE ALSO lmbench(8). AUTHOR Carl Staelin and Larry McVoy Comments, suggestions, and bug reports are always welcome. (c)1994 Larry McVoy $Date$ BW_MMAP_RD(8)
NAME | SYNOPSIS | DESCRIPTION | OUTPUT | MEMORY UTILIZATION | ACKNOWLEDGEMENT | SEE ALSO | AUTHOR
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