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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 mapping 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 Microsystems 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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