David Calhoun's Developer Blog » performance http://davidbcalhoun.com Just another blog Fri, 03 Feb 2012 01:29:09 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 iPhone 4 SunSpider test results (22% faster than iPhone 3GS) http://davidbcalhoun.com/2010/iphone-4-sunspider-test-results http://davidbcalhoun.com/2010/iphone-4-sunspider-test-results#comments Fri, 25 Jun 2010 16:57:53 +0000 David http://davidbcalhoun.com/?p=312 ============================================ RESULTS (means and 95% confidence intervals) -------------------------------------------- Total: 10669.4ms +/- 1.0% -------------------------------------------- 3d: 1471.5ms +/- 2.1% cube: 428.7ms +/- 2.6% morph: 584.3ms +/- 4.7% raytrace: 458.5ms +/- 0.6% access: 1476.7ms +/- 1.3% binary-trees: 151.6ms +/- 1.3% fannkuch: 664.0ms +/- 0.1% nbody: 397.9ms +/- 2.1% nsieve: 263.2ms +/- 6.3% bitops: 947.2ms +/- 2.1% 3bit-bits-in-byte: 195.7ms +/- 2.0% bits-in-byte: 206.1ms +/- 1.0% bitwise-and: 179.7ms +/- 1.1% nsieve-bits: 365.7ms +/- 3.9% controlflow: 169.5ms +/- 8.0% recursive: 169.5ms +/- 8.0% crypto: 668.7ms +/- 1.0% aes: 307.0ms +/- 1.4% md5: 181.1ms +/- 3.1% sha1: 180.6ms +/- 1.0% date: 838.4ms +/- 4.6% format-tofte: 420.9ms +/- 7.4% format-xparb: 417.5ms +/- 2.8% math: 1161.9ms +/- 1.0% cordic: 424.9ms +/- 0.5% partial-sums: 385.1ms +/- 0.3% spectral-norm: 351.9ms +/- 2.9% regexp: 1479.3ms +/- 0.1% dna: 1479.3ms +/- 0.1% string: 2456.2ms +/- 0.9% base64: 347.6ms +/- 3.1% fasta: 408.1ms +/- 6.7% tagcloud: 447.7ms +/- 0.6% unpack-code: 797.8ms +/- 0.4% validate-input: 455.0ms +/- 0.4%

Summary

Thanks to my coworker for lending me his phone for a few minutes (he waited in line for 9 hours yesterday when it first went on sale!).

This is quite an improvement over the iPhone 3GS running iOS4, which ran the SunSpider test in 13787ms. The iPhone 4 ran the same test in 10669ms, which makes it ~22% faster head-to-head.

Processors

The iPhone 3GS has a Samsung S5PC100 ARM Cortex-A8[5] 833 MHz (underclocked to 600 MHz), while the iPhone 4 has an Apple A4 1GHz (likely underclocked to an unknown speed).

]]> http://davidbcalhoun.com/2010/iphone-4-sunspider-test-results/feed 9 Video: John Resig – Testing, Performance Analysis, and jQuery 1.4 http://davidbcalhoun.com/2009/video-john-resig-testing-performance-analysis-and-jquery-1-4 http://davidbcalhoun.com/2009/video-john-resig-testing-performance-analysis-and-jquery-1-4#comments Tue, 22 Dec 2009 03:54:01 +0000 David http://davidbcalhoun.com/?p=78 In case you hadn’t seen it yet, John Resig was kind enough to stop by Yahoo! for the December Bayjax meetup. Here’s the video:

Usually developers are more interested in just getting the dang code to work, and as a result actual the testing and maintenance of JavaScript isn’t talked about too much, so I’m sure this will be new territory for many developers. And since it’s John Resig speaking, there was of course a bit about using TestSwarm, a testing distributed framework-agnostic automated testing tool (that’s a mouthful!).

Included in the talk are good things to note while testing, such as the fact unless you’re running Firefox or Chrome on Windows, all test times have a margin of error of up to 15ms (not to be confused with PPK’s observation of the delay between JavaScript computation and browser rendering).

(via YUIBlog)

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