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why_use_uclinux [2009/08/17 21:36]
lastman correct grammar error in "Scheduling" section
why_use_uclinux [2009/08/17 21:50] (current)
lastman correct grammar errors
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 ====== Downsides of using a kernel ====== ====== Downsides of using a kernel ======
-  - Memory consumption - to have a usable Linux system - you should could on having think of having at least 4-8Meg of SDRAM, and at least 2Meg of Flash.+  - Memory consumption - to have a usable Linux system - your system should have at least 4-8Meg of SDRAM, and at least 2Meg of Flash.
   - Boot Time - the kernel is fast, but sometimes not fast enough - expect to have a 2-3 second boot time.   - Boot Time - the kernel is fast, but sometimes not fast enough - expect to have a 2-3 second boot time.
-  - Interrupt Latency - On occasions, a uClinux device driver, or even the kernel will disables interrupts. Some critical kernel operations can not be interrupted, and it is unfortunate, but interrupts must be turned off for a bit. Care has been taken to keep critical regions as short as possible as they cause increased and variable interrupt latency.+  - Interrupt Latency - On occasions, a uClinux device driver, or even the kernel will disable interrupts. Some critical kernel operations can not be interrupted, and it is unfortunate, but interrupts must be turned off for a bit. Care has been taken to keep critical regions as short as possible as they cause increased and variable interrupt latency.
   - Robustness - although a kernel has gone through lots of testing, and many people are using it - it is always possible that there are some undiscovered issues. Only you can test it in the configuration that you will ship it.   - Robustness - although a kernel has gone through lots of testing, and many people are using it - it is always possible that there are some undiscovered issues. Only you can test it in the configuration that you will ship it.