| Title: Kernel Event Logger Sample |
| |
| Description: |
| |
| This sample uses the philosopher sample with two additional tasks to show the |
| profiling data on different system's states. The fork manager task controls the |
| fork's availibilty. The worker task performs intermitently heavy processing, |
| allowing or preventing the system to go idle. |
| |
| -------------------------------------------------------------------------------- |
| |
| Building and Running Project: |
| |
| This microkernel project outputs to the console. It can be built and executed |
| on QEMU as follows: |
| |
| make qemu |
| |
| -------------------------------------------------------------------------------- |
| |
| Troubleshooting: |
| |
| Problems caused by out-dated project information can be addressed by |
| issuing one of the following commands then rebuilding the project: |
| |
| make clean # discard results of previous builds |
| # but keep existing configuration info |
| or |
| make pristine # discard results of previous builds |
| # and restore pre-defined configuration info |
| |
| |
| Problems with QEMU on ARM: |
| Qemu v2.1 for ARM platform do not support tickless idle. If run the sample |
| project in QEMU with the CONFIG_TICKLESS_IDLE option enabled, the project |
| could present an erratic behaviour. |
| |
| -------------------------------------------------------------------------------- |
| |
| Sample Output: |
| |
| Philosopher 1 EATING |
| Philosopher 2 THINKING |
| Philosopher 3 THINKING |
| Philosopher 4 EATING |
| Philosopher 5 THINKING |
| |
| |
| |
| |
| Dropped events occurred: 0 |
| |
| Context switch summary |
| Context Id Amount of context switches |
| 1067512 17339 |
| 1068536 30067 |
| 1075704 4 |
| 1064184 350 |
| 1074680 1986 |
| 1073656 2018 |
| 1072632 2623 |
| 1071608 2630 |
| 1070584 1983 |
| 1069560 1340 |
