lmbench reporting(3) LMBENCH lmbench reporting(3)NAME
milli, micro, nano, mb, kb - the lmbench reporting subsystem
SYNOPSIS
#include ``lmbench.h''
void milli(char *s, uint64 n)
void micro(char *s, uint64 n)
void nano(char *s, uint64 n)
void mb(uint64 bytes)
void kb(uint64 bytes)
DESCRIPTION
Creating benchmarks using the lmbench timing harness is easy. Since it
is so easy to measure performance using lmbench, it is possible to
quickly answer questions that arise during system design, development,
or tuning. For example, image processing
There are two attributes that are critical for performance, latency and
bandwidth, and lmbench's timing harness makes it easy to measure and
report results for both. The measurement interface, benchmp is the
same, but the reporting functions are different. Latency is usually
important for frequently executed operations, and bandwidth is usually
important when moving large chunks of data.
void milli(char *s, uint64 n)
print out the time per operation in milli-seconds. n is the
number of operations during the timing interval, which is passed
as a parameter because each loop_body can contain several opera‐
tions.
void micro(char *s, uint64 n)
print the time per opertaion in micro-seconds.
void nano(char *s, uint64 n)
print the time per operation in nano-seconds.
void mb(uint64 bytes)
print the bandwidth in megabytes per second.
void kb(uint64 bytes)
print the bandwidth in kilobytes per second.
FUTURES
Development of lmbench is continuing.
SEE ALSOlmbench(8), lmbench(3), timing(3), results(3)AUTHOR
Carl Staelin and Larry McVoy
Comments, suggestions, and bug reports are always welcome.
(c)1998-2000 Larry McVoy and Carl St$Date: lmbench reporting(3)
