Jon,Thanks for these results. I hadn't seen figures comparing GCC 4.0 to 4.2 with SunSpider on PowerPC until now. The results on Intel machines are slightly less promising however. GCC 4.2 looks to be around a 10% regression over 4.0 on SunSpider on my MacBook Pro.
- Mark On 2008-07-19, at 20:27, Jon Shier wrote:
Devs: Thought this may interest someone. Overall 4.2 gives SunSpider a small speedup, but there are several tests in which it actually slows it down. These tests were run using the command line sunspider application after clean builds on Quad G5, using both the default settings and manually switching the projects to use GCC 4.2. Here is the result comparison: TEST COMPARISON FROM TO DETAILS = = = = == = ======================================================================** TOTAL **: 1.026x as fast 2969.7ms +/- 0.2% 2893.6ms +/- 0.3% significant = = = = == = ======================================================================3d: 1.076x as fast 399.9ms +/- 0.7% 371.7ms +/- 0.6% significant cube: 1.116x as fast 127.1ms +/- 0.5% 113.9ms +/- 0.6% significant morph: 1.086x as fast 145.7ms +/- 1.0% 134.2ms +/- 0.9% significant raytrace: 1.028x as fast 127.1ms +/- 0.9% 123.6ms +/- 0.6% significant access: 1.006x as fast 355.5ms +/- 0.3% 353.4ms +/- 0.2% significant binary-trees: 1.122x as fast 54.3ms +/- 0.6% 48.4ms +/- 0.8% significant fannkuch: *1.047x as slow* 98.7ms +/- 0.3% 103.3ms +/- 0.5% significant nbody: 1.008x as fast 174.1ms +/- 0.4% 172.7ms +/- 0.3% significant nsieve: *1.021x as slow* 28.4ms +/- 1.3% 29.0ms +/- 0.0% significant bitops: *1.087x as slow* 244.6ms +/- 0.3% 265.8ms +/- 0.9% significant 3bit-bits-in-byte: *1.138x as slow* 35.6ms +/- 1.4% 40.5ms +/- 0.9% significant bits-in-byte: *1.099x as slow* 47.3ms +/- 0.7% 52.0ms +/- 0.0% significant bitwise-and: *1.25x as slow* 76.2ms +/- 0.4% 95.3ms +/- 2.5% significant nsieve-bits: 1.096x as fast 85.5ms +/- 0.4% 78.0ms +/- 0.4% significant controlflow: *1.175x as slow* 22.9ms +/- 1.0% 26.9ms +/- 0.8% significant recursive: *1.175x as slow* 22.9ms +/- 1.0% 26.9ms +/- 0.8% significant crypto: 1.027x as fast 179.0ms +/- 0.6% 174.3ms +/- 0.7% significant aes: *1.071x as slow* 52.3ms +/- 0.7% 56.0ms +/- 0.6% significant md5: 1.082x as fast 64.6ms +/- 1.3% 59.7ms +/- 0.6% significant sha1: 1.060x as fast 62.1ms +/- 1.1% 58.6ms +/- 1.3% significant date: - 252.1ms +/- 0.8% 252.1ms +/- 0.7% format-tofte: 1.040x as fast 139.0ms +/- 1.1% 133.7ms +/- 0.6% significant format-xparb: *1.047x as slow* 113.1ms +/- 0.7% 118.4ms +/- 1.0% significant math: 1.063x as fast 353.1ms +/- 1.1% 332.1ms +/- 0.5% significant cordic: 1.057x as fast 114.6ms +/- 2.1% 108.4ms +/- 0.3% significant partial-sums: 1.030x as fast 157.0ms +/- 0.8% 152.5ms +/- 0.7% significant spectral-norm: 1.145x as fast 81.5ms +/- 1.2% 71.2ms +/- 0.8% significant regexp: 1.110x as fast 403.6ms +/- 0.2% 363.5ms +/- 0.2% significant dna: 1.110x as fast 403.6ms +/- 0.2% 363.5ms +/- 0.2% significant string: 1.007x as fast 759.0ms +/- 0.3% 753.8ms +/- 0.5% significant base64: *1.060x as slow* 100.5ms +/- 1.0% 106.5ms +/- 2.3% significant fasta: 1.102x as fast 152.7ms +/- 0.8% 138.6ms +/- 0.8% significant tagcloud: *1.011x as slow* 179.5ms +/- 0.7% 181.5ms +/- 0.6% significant unpack-code: *1.014x as slow* 198.2ms +/- 0.3% 201.0ms +/- 0.5% significant validate-input: 1.015x as fast 128.1ms +/- 1.0% 126.2ms +/- 0.9% significant 4.0 is the From column, so 4.2 is the To. I don't know how useful these results will be, just thought I'd share. Jon Shier _______________________________________________ webkit-dev mailing list [email protected] http://lists.webkit.org/mailman/listinfo.cgi/webkit-dev
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