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| <strong>Apache</strong> |
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| <strong>log4cxx project</strong> |
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| <h1>Performance of logging</h1> |
| <p> |
| Experimental results are listed below in units of <b>micro-seconds |
| </b>. Measurements were done on a AMD Athlon 2200+ running Linux |
| Mandrake 10.0. |
| </p> |
| <p> |
| <table border="1"> |
| <caption align="top">Version 0.9.6</caption> |
| <tr> |
| <th>Layout</th> |
| <th>NullAppender</th> |
| <th>FileAppender</th> |
| <th>FileAppender (no flush)</th> |
| <th>AsyncAppender (no flush)</th> |
| </tr> |
| <tr> |
| <td>SimpleLayout</td> |
| <td>4</td> |
| <td>12</td> |
| <td>11</td> |
| <td>24</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%p - %m%n"</td> |
| <td>5</td> |
| <td>12</td> |
| <td>5</td> |
| <td>15</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%-5p - %m%n"</td> |
| <td>6</td> |
| <td>NA</td> |
| <td>NA</td> |
| <td>NA</td> |
| </tr> |
| <tr> |
| <td>TTCCLayout/RELATIVE</td> |
| <td>7</td> |
| <td>17</td> |
| <td>17</td> |
| <td>29</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%r [%t] %-5p %c{2} %x - %m%n"</td> |
| <td>10</td> |
| <td>NA</td> |
| <td>NA</td> |
| <td>NA</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%r [%t] %-5p %.10c %x - %m%n"</td> |
| <td>11</td> |
| <td>NA</td> |
| <td>NA</td> |
| <td>NA</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%r [%t] %-5p %.20c %x - %m%n"</td> |
| <td>11</td> |
| <td>NA</td> |
| <td>NA</td> |
| <td>NA</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%r [%t] %-5p %c - %m%n"</td> |
| <td>9</td> |
| <td>18</td> |
| <td>10</td> |
| <td>22</td> |
| </tr> |
| <tr> |
| <td>TTCCLayout/ISO8601</td> |
| <td>12</td> |
| <td>23</td> |
| <td>23</td> |
| <td>36</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%d{ISO8601} [%t] %-5p %c %x - %m%n"</td> |
| <td>14</td> |
| <td>26</td> |
| <td>16</td> |
| <td>29</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%d{yyyy-MM-dd HH:mm:ss,SSS} [%t] %-5p %c %x - %m%n"</td> |
| <td>14</td> |
| <td>26</td> |
| <td>16</td> |
| <td>28</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%l - %m%n"</td> |
| <td>6</td> |
| <td>14</td> |
| <td>6</td> |
| <td>13</td> |
| </tr> |
| <tr> |
| <td>PatternLayout "%F.%L - %m%n"</td> |
| <td>6</td> |
| <td>NA</td> |
| <td>NA</td> |
| <td>NA</td> |
| </tr> |
| </table> |
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