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BW_MEM_RD(8) LMBENCH BW_MEM_RD(8)

bw_mem_rd - time memory read rate (with overhead)

bw_mem_rd size

bw_mem_rd allocates the specified amount of memory, zeros it, and then times the reading of that memory as a series of integer loads and adds. Each four byte integer is loaded and added to accumulator.

The size 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.,

8.00 25.33

This benchmark should move approximately the reported amount of memory.

Funding for the development of this tool was provided by Sun Microsystems Computer Corporation.

lmbench(8).
$Date$ (c)1994 Larry McVoy

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