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Issue 14863013: Update SunSpider benchmark from 0.9.1 to 1.0. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Add missing files Created 7 years, 7 months ago
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1 /* 1 /*
2 * Copyright (C) 2007 Apple Inc. All rights reserved. 2 * Copyright (C) 2007 Apple Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
(...skipping 222 matching lines...) Expand 10 before | Expand all | Expand 10 after
233 function tDist(n) 233 function tDist(n)
234 { 234 {
235 if (n > tMax) 235 if (n > tMax)
236 return tLimit; 236 return tLimit;
237 return tDistribution[n]; 237 return tDistribution[n];
238 } 238 }
239 239
240 240
241 function formatMean(meanWidth, mean, stdErr, count) 241 function formatMean(meanWidth, mean, stdErr, count)
242 { 242 {
243 if (mean != mean) {
244 var result = " ERROR ";
245 for (var i = 0; i < meanWidth; ++i)
246 result = " " + result;
247 return result;
248 }
249
243 var meanString = mean.toFixed(1).toString(); 250 var meanString = mean.toFixed(1).toString();
244 while (meanString.length < meanWidth) { 251 while (meanString.length < meanWidth) {
245 meanString = " " + meanString; 252 meanString = " " + meanString;
246 } 253 }
247 254
248 var error = "+/- " + ((tDist(count) * stdErr / mean) * 100).toFixed(1) + "% "; 255 var errString = ((tDist(count) * stdErr / mean) * 100).toFixed(1) + "%";
256 while (errString.length < "99.9%".length)
257 errString += " ";
258
259 var error = "+/- " + errString + " ";
249 260
250 return meanString + "ms " + error; 261 return meanString + "ms " + error;
251 } 262 }
252 263
253 function computeLabelWidth() 264 function computeLabelWidth()
254 { 265 {
255 var width = "Total".length; 266 var width = "Total".length;
256 for (var category in categoryMeans1) { 267 for (var category in categoryMeans1) {
257 if (category.length + 2 > width) 268 if (category.length + 2 > width)
258 width = category.length + 2; 269 width = category.length + 2;
(...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after
290 } 301 }
291 return str; 302 return str;
292 } 303 }
293 304
294 function resultLine(labelWidth, indent, label, meanWidth1, mean1, stdErr1, m eanWidth2, mean2, stdErr2) 305 function resultLine(labelWidth, indent, label, meanWidth1, mean1, stdErr1, m eanWidth2, mean2, stdErr2)
295 { 306 {
296 result = pad("", indent); 307 result = pad("", indent);
297 result += label + ": "; 308 result += label + ": ";
298 result = pad(result, labelWidth + 2); 309 result = pad(result, labelWidth + 2);
299 310
300 var t = (mean1 - mean2) / (Math.sqrt((stdErr1 * stdErr1) + (stdErr1 * st dErr2)));
301 var df = count1 + count2 - 2;
302
303 var statisticallySignificant = (Math.abs(t) > tDist(df+1));
304 var diff = mean2 - mean1;
305 var percentage = 100 * diff / mean1;
306 var isFaster = diff < 0;
307 var probablySame = (percentage < 0.1) && !statisticallySignificant;
308 var ratio = isFaster ? (mean1 / mean2) : (mean2 / mean1);
309 var fixedRatio = (ratio < 1.2) ? ratio.toFixed(3).toString() : ((ratio < 10) ? ratio.toFixed(2).toString() : ratio.toFixed(1).toString());
310 var formattedRatio = isFaster ? fixedRatio + "x as fast" : "*" + fixedRa tio + "x as slow*";
311
312 var diffSummary; 311 var diffSummary;
313 var diffDetail; 312 var diffDetail;
314 313
315 if (probablySame) { 314 if (mean1 != mean1 || mean2 != mean2) {
316 diffSummary = "-";
317 diffDetail = "";
318 } else if (!statisticallySignificant) {
319 diffSummary = "??"; 315 diffSummary = "??";
320 diffDetail = " not conclusive: might be " + formattedRatio; 316 diffDetail = " invalid runs detected";
321 } else { 317 } else {
322 diffSummary = formattedRatio; 318 var t = (mean1 - mean2) / (Math.sqrt((stdErr1 * stdErr1) + (stdErr2 * stdErr2)));
323 diffDetail = " significant"; 319 var df = count1 + count2 - 2;
320
321 var statisticallySignificant = (Math.abs(t) > tDist(df+1));
322 var diff = mean2 - mean1;
323 var percentage = 100 * diff / mean1;
324 var isFaster = diff < 0;
325 var probablySame = (percentage < 0.1) && !statisticallySignificant;
326 var ratio = isFaster ? (mean1 / mean2) : (mean2 / mean1);
327 var fixedRatio = (ratio < 1.2) ? ratio.toFixed(3).toString() : ((rat io < 10) ? ratio.toFixed(2).toString() : ratio.toFixed(1).toString());
328 var formattedRatio = isFaster ? fixedRatio + "x as fast" : "*" + fix edRatio + "x as slow*";
329
330 if (probablySame) {
331 diffSummary = "-";
332 diffDetail = "";
333 } else if (!statisticallySignificant) {
334 diffSummary = "??";
335 diffDetail = " not conclusive: might be " + formattedRatio;
336 } else {
337 diffSummary = formattedRatio;
338 diffDetail = " significant";
339 }
324 } 340 }
325 341
326 return result + pad(diffSummary, 18) + formatMean(meanWidth1, mean1, std Err1, count1) + " " + formatMean(meanWidth2, mean2, stdErr2, count2) + diffDeta il; 342 return result + pad(diffSummary, 18) + formatMean(meanWidth1, mean1, std Err1, count1) + " " + formatMean(meanWidth2, mean2, stdErr2, count2) + diffDeta il;
327 } 343 }
328 344
329 function printOutput() 345 function printOutput()
330 { 346 {
331 var labelWidth = computeLabelWidth(); 347 var labelWidth = computeLabelWidth();
332 var meanWidth1 = computeMeanWidth(mean1, categoryMeans1, testMeansByCate gory1); 348 var meanWidth1 = computeMeanWidth(mean1, categoryMeans1, testMeansByCate gory1);
333 var meanWidth2 = computeMeanWidth(mean2, categoryMeans2, testMeansByCate gory2); 349 var meanWidth2 = computeMeanWidth(mean2, categoryMeans2, testMeansByCate gory2);
334 350
335 print("\n"); 351 print("\n");
336 var header = "TEST"; 352 var header = "TEST";
337 while (header.length < labelWidth) 353 while (header.length < labelWidth)
338 header += " "; 354 header += " ";
339 header += " COMPARISON FROM TO D ETAILS"; 355 header += " COMPARISON FROM TO DETAILS";
340 print(header); 356 print(header);
341 print(""); 357 print("");
342 print("================================================================= ============"); 358 print("================================================================= ==============");
343 print(""); 359 print("");
344 print(resultLine(labelWidth, 0, "** TOTAL **", meanWidth1, mean1, stdErr 1, meanWidth2, mean2, stdErr2)); 360 print(resultLine(labelWidth, 0, "** TOTAL **", meanWidth1, mean1, stdErr 1, meanWidth2, mean2, stdErr2));
345 print(""); 361 print("");
346 print("================================================================= ============"); 362 print("================================================================= ==============");
347 363
348 for (var category in categoryMeans1) { 364 for (var category in categoryMeans1) {
349 print(""); 365 print("");
350 print(resultLine(labelWidth, 2, category, 366 print(resultLine(labelWidth, 2, category,
351 meanWidth1, categoryMeans1[category], categoryStdEr rs1[category], 367 meanWidth1, categoryMeans1[category], categoryStdEr rs1[category],
352 meanWidth2, categoryMeans2[category], categoryStdEr rs2[category])); 368 meanWidth2, categoryMeans2[category], categoryStdEr rs2[category]));
353 for (var test in testMeansByCategory1[category]) { 369 for (var test in testMeansByCategory1[category]) {
354 var shortName = test.replace(/^[^-]*-/, ""); 370 var shortName = test.replace(/^[^-]*-/, "");
355 print(resultLine(labelWidth, 4, shortName, 371 print(resultLine(labelWidth, 4, shortName,
356 meanWidth1, testMeansByCategory1[category][test ], testStdErrsByCategory1[category][test], 372 meanWidth1, testMeansByCategory1[category][test ], testStdErrsByCategory1[category][test],
(...skipping 14 matching lines...) Expand all
371 mean2 = computeMeans(count2, total2, categoryTotals2, categoryMeans2, testTo talsByCategory2, testMeansByCategory2); 387 mean2 = computeMeans(count2, total2, categoryTotals2, categoryMeans2, testTo talsByCategory2, testMeansByCategory2);
372 388
373 stdDev1 = computeStdDevs(mean1, itemTotals1, categoryStdDevs1, categoryMeans 1, testStdDevsByCategory1, testMeansByCategory1); 389 stdDev1 = computeStdDevs(mean1, itemTotals1, categoryStdDevs1, categoryMeans 1, testStdDevsByCategory1, testMeansByCategory1);
374 stdDev2 = computeStdDevs(mean2, itemTotals2, categoryStdDevs2, categoryMeans 2, testStdDevsByCategory2, testMeansByCategory2); 390 stdDev2 = computeStdDevs(mean2, itemTotals2, categoryStdDevs2, categoryMeans 2, testStdDevsByCategory2, testMeansByCategory2);
375 391
376 stdErr1 = computeStdErrors(count1, stdDev1, categoryStdErrs1, categoryStdDev s1, testStdErrsByCategory1, testStdDevsByCategory1); 392 stdErr1 = computeStdErrors(count1, stdDev1, categoryStdErrs1, categoryStdDev s1, testStdErrsByCategory1, testStdDevsByCategory1);
377 stdErr2 = computeStdErrors(count2, stdDev2, categoryStdErrs2, categoryStdDev s2, testStdErrsByCategory2, testStdDevsByCategory2); 393 stdErr2 = computeStdErrors(count2, stdDev2, categoryStdErrs2, categoryStdDev s2, testStdErrsByCategory2, testStdDevsByCategory2);
378 394
379 printOutput(); 395 printOutput();
380 } 396 }
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