Manual Reference Pages - REPORTING (3)
milli, micro, nano, mb, kb - the lmbench reporting subsystem
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)
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
lmbenchs 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 operations.
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.
lmbench is continuing.
lmbench(8), lmbench(3), timing(3), results(3)
Carl Staelin and Larry McVoy
Comments, suggestions, and bug reports are always welcome.
|(c)1998-2000 Larry McVoy and Carl Staelin ||LMBENCH REPORTING (3) ||$Date: |
Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.