Manual Reference Pages - BW_MMAP_RD (8)
bw_mmap_rd - time the reading and summing of a file
-P <parallelism> ]
-W <warmups> ]
-N <repetitions> ]
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
specification may end with k or m to mean
kilobytes (* 1024) or megabytes (* 1024 * 1024).
Output format is "%0.2f %.2f\n", megabytes, megabytes_per_second, i.e.,
This benchmark should move approximately the reported amount of memory.
Funding for the development of
this tool was provided by Sun Microsystems Computer Corporation.
Carl Staelin and Larry McVoy
Comments, suggestions, and bug reports are always welcome.
|(c)1994 Larry McVoy ||BW_MMAP_RD (8) ||$Date$ |
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