4.115
Last change
on this file since 65b185e was
65b185e,
checked in by Joel Sherrill <joel.sherrill@…>, on 12/06/10 at 16:35:53
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2010-12-06 Joel Sherrill <joel.sherrill@…>
- README: Add initial small set of POSIX Timing Tests.
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File size:
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1 | # |
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2 | # $Id$ |
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3 | # |
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4 | |
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5 | This directory contains the RTEMS Classic API Timing Test Suite. |
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6 | The tests in this directory are used to measure the execution |
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7 | time of RTEMS directive and some critical internal functions. |
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8 | The results of these test are useful for comparison of RTEMS |
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9 | performance |
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10 | |
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11 | + between versions of RTEMS |
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12 | + between different boards |
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13 | + across different architectures |
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14 | |
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15 | These tests attempt to benchmark RTEMS as the user would. They measure |
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16 | the execution time for a directive (under various circumstances) |
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17 | from the time RTEMS is entered until it is executed. Where possible, |
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18 | the time is the average of at least 100 invocations of the directive. |
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19 | |
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20 | The accuracy of the times reported by these benchmarks is very dependent |
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21 | on the resolution of the timer being used. It is also important to |
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22 | insure that all sources of hardware interrupts are disabled during |
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23 | execution of the tests. This insures that the directive time reported |
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24 | does not include any interrupt time. |
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25 | |
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