GSP
Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Support
Contact Us
Online Help
Handbooks
Domain Status
Man Pages

FAQ
Virtual Servers
Pricing
Billing
Technical

Network
Facilities
Connectivity
Topology Map

Miscellaneous
Server Agreement
Year 2038
Credits
 

USA Flag

 

 

Man Pages
BW_MMAP_RD(8) LMBENCH BW_MMAP_RD(8)

bw_mmap_rd - time the reading and summing of a file

bw_mmap_rd [ -P <parallelism> ] [ -W <warmups> ] [ -N <repetitions> ] size file

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 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).

Carl Staelin and Larry McVoy

Comments, suggestions, and bug reports are always welcome.

$Date$ (c)1994 Larry McVoy

Search for    or go to Top of page |  Section 8 |  Main Index

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with ManDoc.