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Performance boost by writing an application in Kernel space rather than kernel space

lyf sci
Genius 3720 points

Hi Experts,

I would like to write an application, which will better choice !!

1. Writing a simple application in the User space and invoked during startup and run the system forever. (It seems to be easy but not meeting the time critical event)

 

(or)

 

2. Configure the kernel and disable the unwanted hardware modules and put the application in to the kernel thread. So it will be preemptive and tightly packed with less latency.

  • 0
    TI__Guru** 116100 points
    What is your type of application and could you explain a bit on your requirement ?
  • 0
    TI__Mastermind 43955 points

    Hi Lyf,

    Running an application on user space and Kernel space has its own list of advantages and disadvantages.

    It should be decided upon the project requirements like "How frequently the application will request kernel to interact with the hardware, number of threads the app possess and the scheduling mechanisms to switch between the threads, memory management, resource management e.t.c.

    You might be the better person to analyse the pros and cons of each method which will be suitable for your project as you will have the better understanding of the project than anybody else.

    Regards,

    Shankari.

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  • 0 in reply to Shankari G
    Genius 3720 points
    Hi Shankari,

    Thanks for the valuable suggestions.

    I would like to run the preemptive based task switch.

    Is it possible to achieve the real time functionality using the Linux kernel 3.12 and above ?

    How could it be profiled ?

    Regards,
    Lyf
  • 0 in reply to lyf sci
    TI__Expert 4475 points
    Hi Lyf,

    If you want to write Application - you can do this only in a User Space. All in a kernel space will be driver or module, but not Application. I strongly recommend to write Application only in a User Space.

    BR
    Ivan