| author | Matti Laitinen <matti.t.laitinen@nokia.com> |
| Thu, 11 Feb 2010 15:32:31 +0200 | |
| changeset 2 | b9ab3b238396 |
| child 5 | 844b047e260d |
| permissions | -rw-r--r-- |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
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Matti Laitinen <matti.t.laitinen@nokia.com>
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
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<title>Function Calls</title> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<link href="../../../book.css" rel="stylesheet" type="text/css"> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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</head> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<body> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<h2>Function Calls</h2> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p>If the profiler data file contained function call information, select the Function Calls tab to show information about the function call relationships during the selected time period. Figure 1 shows an example set of tables that provide information about function calls.</p> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p align="center"><img src="images/function_call_info.png" width="764" height="609"></p> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p class="figure">Figure 1. Function Call Information</p> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p>Only one function can be selected at a time. For the selected function, you can see the functions that have been found calling it and the functions that it has called. Additional columns provide more information, such as the percentage of each functions activity based on 100 percent of all calls to and from the selected function, Function's starting address (in hex), binary where function exists, and the path of the binary.</p> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p>Description of table columns:<br> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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(for all tables)</p> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<ul> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li>The <strong>Function Start</strong> column displays the hexadecimal start address of each function.</li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li>The <strong>In Binary</strong> column tells(s) the binary containing each function.</li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li>The <strong>Path of Binary</strong> column shows the PC folder containing each function’s binary.</li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li>The<strong> Is Caller %</strong> column shows the percentage of time that this function was the caller of the function that was executing.</li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li>The <strong>Is Called %</strong> column shows the percentage of time in the selected time period that this function was executing.</li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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</ul> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p>(in the <strong>Select One Function</strong> table)</p> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<ul> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li>The <strong>Called Samples</strong> column shows the number of samples in which this function was executing.</li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li>The <strong>Caller Samples</strong> column displays the number of samples in which this function was the caller of the function that was executing.</li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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</ul> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p>The selected function may have been called from one or more functions. In the <strong>Functions calling the selected function</strong> table, the <strong>% of Calls</strong> column shows what percentage of the time the selected function was called by each function in the table. For each function in this table, the <strong>Is Caller %</strong> column indicates the percentage of samples that the function was the caller of the executing function.</p> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p>The selected function may have called one or more functions. In the <strong>Functions called by the selected function</strong> table, the <strong>% of Calls</strong> column shows what percent of the time the selected function called each function in the table. For each function in this table, the <strong>Is Called %</strong> column indicates in what percentage of samples the function was executing.</p> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
diff
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<p class="note"><strong>NOTE</strong> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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On the target device, the link register usually contains the return address of the caller function. |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
diff
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However, a called function may temporarily use the link register to hold a constant or variable. |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
diff
changeset
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Performance Investigator uses link register values in the profiler data file to determine the names |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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of caller functions. |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
diff
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When PI cannot determine the name of a caller function, it may be because the link register held a constant |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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or variable. For example, if the link register held a constant 0x0, PI would display the caller's name as "Function at 0x0 not found". </p> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<p><strong>Related references</strong></p> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<ul> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li><a href="binary_load.htm">Binary Load</a></li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li><a href="function_load.htm">Function Load</a></li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<li><a href="thread_load.htm">Thread Load</a></li> |
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Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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</ul> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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<div id="footer">Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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</body> |
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b9ab3b238396
Initial version of Performance Investigator under EPL
Matti Laitinen <matti.t.laitinen@nokia.com>
parents:
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</html> |