| <html><head><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> |
| <style type="text/css">p, table, td, th { font-family: arial, helvetica, geneva; font-size: 10pt} |
| pre { font-family: "Courier New", Courier, mono; font-size: 10pt} |
| h2 { font-family: arial, helvetica, geneva; font-size: 18pt; font-weight: bold ; line-height: 14px} |
| code { font-family: "Courier New", Courier, mono; font-size: 10pt} |
| sup { font-family: arial,helvetica,geneva; font-size: 10px} |
| h3 { font-family: arial, helvetica, geneva; font-size: 14pt; font-weight: bold} |
| li { font-family: arial, helvetica, geneva; font-size: 10pt} |
| h1 { font-family: arial, helvetica, geneva; font-size: 28px; font-weight: bold} |
| body { font-family: arial, helvetica, geneva; font-size: 10pt; clip: rect( ); margin-top: 5mm; margin-left: 3mm} |
| .indextop { font-size: x-large;; font-family: Verdana, Arial, Helvetica, sans-serif; font-weight: bold} |
| .indexsub { font-size: xx-small;; font-family: Arial, Helvetica, sans-serif; color: #8080FF} |
| </style> |
| <body> |
| <p> |
| Since 3.5, it's possible to see results in fingerprints with three different |
| kinds of scale: |
| <ul> |
| <li><a href="#percent">Percentage scale</a></li> |
| <li><a href="#time">Time linear scale</a></li> |
| <li><a href="#time">Time logarithmic scale</a></li> |
| <li><a href="#tips">Tips for time scales</a></li> |
| </ul> |
| </p> |
| <h1><a name="percent">Percentage scale</h1> |
| <p>The X axis represents percentage of the variation vs. the given baseline</p> |
| <p>This is the way fingerprints were displayed since the beginning: |
| <p><img src="images/percentage.png"> |
| <ul> |
| <li>Red bar means a regression, even if it's less than the 10% threshold.</li> |
| <li>Green bar means an improvement</li> |
| <li>Gray bar means an 'explained' regression.</li> |
| </ul> |
| </p> |
| <h1><a name="time">Linear and logarithmic time scales</h1> |
| <p>For these scales, the X axis represents the duration time of the test.<br> |
| The colors meanings are the same than for the percentage scale.<br> |
| These kind of graphs give a better idea of time duration for each test.</p> |
| <p>Typically use linear scale if you want to see the tests relativeness for all the component tests:</p> |
| <p><img src="images/linear.png"> |
| <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> |
| <p><img src="images/log.png"> |
| <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> |
| The variation between the baseline and the build is displayed as a percentage on top of both bars.</p> |
| <h1><a name="tips">Tips for time scales</h1> |
| <p>Tips are almost the same for linear and logarithmic scales:</p> |
| <table border="0"> |
| <tr> |
| <td valign="top"><img src="images/light.gif"></td> |
| <td><b>Flying over a bar displays its time value<b>:</td></tr> |
| </tr> |
| <tr> |
| <td></td> |
| <td><img src="images/help_time_baseline.png"></td> |
| </tr> |
| <tr> |
| <td></td> |
| <td><img src="images/help_time_current.png"></td> |
| </tr> |
| <tr><td><br></td></tr> |
| <tr> |
| <td valign="top"><img src="images/light.gif"></td> |
| <td><b>For <u>linear scale only</u>, when the error on the time result is noticeable, |
| then the measurement uncertainty is shown in yellow at the end of the bar<b>:</td></tr> |
| </tr> |
| <tr> |
| <td></td> |
| <td><img src="images/help_time_error.png"></td> |
| </tr> |
| <tr><td><br></td></tr> |
| <tr> |
| <td valign="top"><img src="images/light.gif"></td> |
| <td><b>A performance regression may sometimes have a known good reason</b>.<br> |
| In this case, the current build bar is grayed and flying over it also shows the given explanation:</td></tr> |
| </tr> |
| <tr> |
| <td></td> |
| <td><img src="images/help_explained_regression.png"></td> |
| </tr> |
| <tr><td><br></td></tr> |
| <tr> |
| <td valign="top"><img src="images/light.gif"></td> |
| <td><b>Test result may have big error which can make the test result not fully reliable</b>.<br> |
| In this case, a warning icon is shown after the variation value and flying over it gives the offending error value:</td></tr> |
| </tr> |
| <tr> |
| <td></td> |
| <td><img src="images/help_error_warning.png"></td> |
| </tr> |
| <tr><td><br></td></tr> |
| <tr> |
| <td valign="top"><img src="images/light.gif"></td> |
| <td><b>Test may have no result for the used baseline, hence the first available build is used as a reference</b>.<br> |
| 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> |
| </tr> |
| <tr> |
| <td></td> |
| <td><img src="images/help_no_baseline.png"></td> |
| </tr> |
| </table> |
| </body> |
| </html> |
