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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - JetStream should include a JavaScript version of the CDx real-time benchmark"
href="https://bugs.webkit.org/show_bug.cgi?id=146156">146156</a>
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<th>Summary</th>
<td>JetStream should include a JavaScript version of the CDx real-time benchmark
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>528+ (Nightly build)
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>Tools / Tests
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>fpizlo@apple.com
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<pre>JetStream tries to emphasize latency. Our current latency testing story involves code load tests, short-running tests that offer only small opportunities for warm-up, and tests that measure performance above the 95th percentile.
In academia, there is a test that was used a lot for Real Time Java. It's called CDx. It's a simple aircraft collision detection simulation. It was used in my dissertation and some of my academic papers, and I was one of the co-authors of this original test. Here's the benchmark URL:
<a href="https://www.cs.purdue.edu/sss/projects/cdx/">https://www.cs.purdue.edu/sss/projects/cdx/</a>
Here are some of the publications based on this benchmark:
<a href="https://www.cs.purdue.edu/sss/projects/cdx/publications/">https://www.cs.purdue.edu/sss/projects/cdx/publications/</a>
CDx is meant to be easy to implement in different languages. It has a C implementation, for example. We should port it to JavaScript, add it to JetStream as a 95th percentile worst-case test, and retire whatever SunSpider test is least useful (probably cordic, since it's so tiny).</pre>
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