clockcount / 0.1

Short description:

access processor specific clock counter

Category:

Status:

experimental

Created:

2006-01-01 12:16:58 GMT

Last update:

2006-01-01 12:16:58 GMT

Owner:

Tanaka Akira (Projects of this owner)

Homepage:

http://www.a-k-r.org/clockcount/

Download:

http://www.a-k-r.org/clockcount/

License:

BSD-type

Dependency:

None

Description:

clockcount

clockcount access processor specific clock counter.

Usage

require 'clockcount'
p ClockCount()

Sample Script to Mesure Clock Speed

% ruby sample.rb 
0x171faf0c3cbed
0x171fb3e46f666 1.30258316772774[GHz]
0x171fb8a2981c2 1.27298907227854[GHz]
0x171fbd7ae77dc 1.30054508000412[GHz]
0x171fc21e131d4 1.24473258972987[GHz]
0x171fc6d123ecf 1.26146415868276[GHz]
...

Supported Platforms

Intel Pentium (rdtsc, 64bit)
AMD64, Intel EM64T (rdtsc, 64bit)
Intel Itanium (IA64) (ar44 register, 64bit)
PowerPC (PowerPC603, POWER3 or later) (mftb and mftbu, 64bit)
Sun UltraSparc (tick register, 64bit)
HP PA-RISC 2.0 (cr16 register, 64bit)

Note

The meaning of "clock" varys on platforms. For example, the counter doesn't count CPU clocks on PowerPC.

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