2015-08-15 02:13:25 +08:00
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Title: Profiler Sample
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2015-08-01 04:22:25 +08:00
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Description:
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2015-08-22 07:17:56 +08:00
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This sample uses the philosopher sample with two additional tasks to show the
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profiling data on different system's states. The fork manager task controls the
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fork's availibilty. The worker task performs intermitently heavy processing,
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allowing or preventing the system to go idle.
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2015-08-01 04:22:25 +08:00
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--------------------------------------------------------------------------------
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Building and Running Project:
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This microkernel project outputs to the console. It can be built and executed
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on QEMU as follows:
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make qemu
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--------------------------------------------------------------------------------
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Troubleshooting:
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Problems caused by out-dated project information can be addressed by
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issuing one of the following commands then rebuilding the project:
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make clean # discard results of previous builds
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# but keep existing configuration info
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or
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make pristine # discard results of previous builds
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# and restore pre-defined configuration info
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2015-08-22 07:17:56 +08:00
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Problems with QEMU on ARM:
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Qemu v2.1 for ARM platform do not support tickless idle. If run the sample
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project in QEMU with the CONFIG_TICKLESS_IDLE option enabled, the project
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could present an erratic behaviour.
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2015-08-01 04:22:25 +08:00
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--------------------------------------------------------------------------------
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2015-08-14 04:15:18 +08:00
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Sample Output:
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Philosopher 1 EATING
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Philosopher 2 THINKING
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Philosopher 3 THINKING
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Philosopher 4 EATING
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Philosopher 5 THINKING
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Dropped events occurred: 0
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Context switch summary
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Context Id Amount of context switches
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1067512 17339
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1068536 30067
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1075704 4
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1064184 350
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1074680 1986
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1073656 2018
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1072632 2623
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1071608 2630
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1070584 1983
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1069560 1340
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