Whetstone Benchmark Java Version

Whetstone Benchmark Java Version
For the benchmark to run, Java Runtime Environment (JRE) or Java Virtual Machine (JVM) needs to be installed. These and other security settings might also need to be enabled. The results will be on a blue background below. To save them, use print/copy screen facilities and paste into a graphics package.
To rerun, click on the Refresh/Reload Current Page icon. WARNING - There can be a considerable delay before the benchmark actually starts.

This is a revised version of the on-line benchmark produced in 1997. See below for details. Old and new benchmarks, including the Java source code, can be found in:

onlinetests.zip for Windows or onlinetests.tar.gz for Linux

Introduced in 1972, the original Whetstone Benchmark provided a performance rating in terms of Million Whetstone Instructions Per Second or MWIPS. This, and other later versions, also measure the speeds of individual test functions in Million Operations or Floating point Operations Per Second (MOPS or MFLOPS). Note that, using the same software and processor model, measured speeds can be expected to be proportional to CPU MHz. See the following:

Whetstone Benchmark History and (Old) Results

Whetstone Benchmark Detailed Results On PCs - Java

Java Performance - Comparison with other programming languages

Roy Longbottom痴 PC Benchmark Collection

Output Format

The benchmark was also compiled to display results in a Windowe Command Prompt or Linux Terminal display, via a 屠ava whetstc? command, with details also being saved in a whets.txt log file. All outputs have the same format, as follows:

 Whetstone Benchmark Java Version, Dec 8 2011, 15:39:00
 1 Pass
 Test Result MFLOPS MOPS millisecs
 N1 floating point -1.124750137 905.66 0.0212
 N2 floating point -1.131330490 720.26 0.1866
 N3 if then else 1.000000000 1005.83 0.1029
 N4 fixed point 12.000000000 1923.08 0.1638
 N5 sin,cos etc. 0.499110132 43.72 1.9030
 N6 floating point 0.999999821 500.84 1.0770
 N7 assignments 3.000000000 643.90 0.2870
 N8 exp,sqrt etc. 0.825148463 33.57 1.1080
 MWIPS 2062.07 4.8495
 Operating System Windows 7, Arch. amd64, Version 6.1
 Java Vendor Sun Microsystems Inc., Version 1.6.0_21
 CPU AMD64 Family 16 Model 4 Stepping 2, AuthenticAMD
 Or
 Operating System Linux, Arch. amd64, Version 2.6.35-24-generic
 Java Vendor Sun Microsystems Inc., Version 1.6.0_20
 CPU null

The numeric results are derived from a constant minimum number of passes and could be expected to be consistent on all variations of hardware and browsers. One exception was found on a Core 2 Duo based laptop, just running Ubuntu 10.10, where the N8 result was 0.935364604. Tests other than those produced 0.825148463.

Old and New Version Differences

The original Java benchmark was run for 100 seconds, needed because of the wide variation in the time taken by the different tests and possible timer resolution issues. There was a Run button to start testing. It also provided tests to measure graphics speed. When run under Linux, using the Firefox browser, there were text formatting issues and false speed indications due to compiler over-optimisation.

In the latest version, slight changes were made to the programming code to avoid the optimisation issues. This time, all tests are run for a minimum of one second, with running time milliseconds being adjusted to determine speeds of a single pass, using the original loop count parameters. Execution of the benchmark starts automatically on loading, sometimes with an inexplicable delay, or after clicking on the refresh symbol.

NOTE - Using both on-line versions, displayed results might be obliterated if the page is resized, moved, scrolled or overlaid by another window.

Roy Longbottom December 2011