1 <html><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> 2 <style type="text/css">p, table, td, th { font-family: arial, helvetica, geneva; font-size: 10pt} 3 pre { font-family: "Courier New", Courier, mono; font-size: 10pt} 4 h2 { font-family: arial, helvetica, geneva; font-size: 18pt; font-weight: bold ; line-height: 14px} 5 code { font-family: "Courier New", Courier, mono; font-size: 10pt} 6 sup { font-family: arial,helvetica,geneva; font-size: 10px} 7 h3 { font-family: arial, helvetica, geneva; font-size: 14pt; font-weight: bold} 8 li { font-family: arial, helvetica, geneva; font-size: 10pt} 9 h1 { font-family: arial, helvetica, geneva; font-size: 28px; font-weight: bold} 10 body { font-family: arial, helvetica, geneva; font-size: 10pt; clip: rect( ); margin-top: 5mm; margin-left: 3mm} 11 .indextop { font-size: x-large;; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: bold} 12 .indexsub { font-size: xx-small;; font-family: Arial, Helvetica, sans-serif; color: #8080FF} 13 </style> 14 <body> 15 <p> 16 <h1>Table of contents</h1> 17 <ul> 18 <li><a href="#scales">Scales</a> 19 <ul> 20 <li><a href="#percent">Percentage</a></li> 21 <li><a href="#time">Time linear</a></li> 22 <li><a href="#time">Time logarithmic</a></li> 23 </ul> 24 </li> 25 <li><a href="#tips">Tips for time scales</a></li> 26 </ul> 27 </p> 28 <h1><a name="scales">Scales</h1> 29 Since 3.5, it's possible to see results in fingerprints with three different 30 kinds of scale. 31 <h3><a name="percent">Percentage scale</h3> 32 <p>The X axis represents percentage of the variation vs. the given baseline</p> 33 <p>This is the way fingerprints were displayed since the beginning: 34 <p><img src="images/percentage.png"> 35 <ul> 36 <li>Red bar means a regression, even if it's less than the 10% threshold.</li> 37 <li>Green bar means an improvement</li> 38 <li>Gray bar means an 'explained' regression.</li> 39 </ul> 40 </p> 41 <h3><a name="time">Linear and logarithmic time scales</h3> 42 <p>For these scales, the X axis represents the duration time of the test.<br> 43 The colors meanings are the same than for the percentage scale.<br> 44 These kind of graphs give a better idea of time duration for each test.</p> 45 <p>Typically use linear scale if you want to see the tests relativeness for all the component tests:</p> 46 <p><img src="images/linear.png"> 47 <p>But the logarithmic scale is more appropriate when there are a strong duration differences between tests, hence makes short duration tests easier to survey:</p> 48 <p><img src="images/log.png"> 49 <p>Each test have two bars: the former is white and shows the baseline result, the latter is colored (red, green or gray) and shows the current build result.<br> 50 The variation between the baseline and the build is displayed as a percentage on top of both bars.</p> 51 <h1><a name="tips">Tips for time scales</h1> 52 <p>Tips are almost the same for linear and logarithmic scales:</p> 53 <table border="0"> 54 <tr> 55 <td valign="top"><img src="../images/light.gif"></td> 56 <td><b>Flying over a bar displays its time value<b>:</td></tr> 57 </tr> 58 <tr> 59 <td></td> 60 <td><img src="images/help_time_baseline.png"></td> 61 </tr> 62 <tr> 63 <td></td> 64 <td><img src="images/help_time_current.png"></td> 65 </tr> 66 <tr><td><br></td></tr> 67 <tr> 68 <td valign="top"><img src="../images/light.gif"></td> 69 <td><b>For <u>linear scale only</u>, when the error on the time result is noticeable, 70 then the measurement uncertainty is shown in yellow at the end of the bar<b>:</td></tr> 71 </tr> 72 <tr> 73 <td></td> 74 <td><img src="images/help_time_error.png"></td> 75 </tr> 76 <tr><td><br></td></tr> 77 <tr> 78 <td valign="top"><img src="../images/light.gif"></td> 79 <td><b>A performance regression may sometimes have a known good reason</b>.<br> 80 In this case, the current build bar is grayed and flying over it also shows the given explanation:</td></tr> 81 </tr> 82 <tr> 83 <td></td> 84 <td><img src="images/help_explained_regression.png"></td> 85 </tr> 86 <tr><td><br></td></tr> 87 <tr> 88 <td valign="top"><img src="../images/light.gif"></td> 89 <td><b>Test result may have big error which can make the test result not fully reliable</b>.<br> 90 In this case, a warning icon is shown after the variation value and flying over it gives the offending error value:</td></tr> 91 </tr> 92 <tr> 93 <td></td> 94 <td><img src="images/help_error_warning.png"></td> 95 </tr> 96 <tr><td><br></td></tr> 97 <tr> 98 <td valign="top"><img src="../images/light.gif"></td> 99 <td><b>Test may have no result for the used baseline, hence the first available build is used as a reference</b>.<br> 100 In this case, a warning icon is shown after the scenario title and flying over it gives the build ID used to compute the variation:</td></tr> 101 </tr> 102 <tr> 103 <td></td> 104 <td><img src="images/help_no_baseline.png"></td> 105 </tr> 106 </table> 107 </body> 108 </html> 109
