Re: [microblaze-uclinux] net speed

[Aurelian Lazarut <aurelian.lazarut@xxxxxxxxxxx>]

Hi,

On Fri, 2004-07-23 at 07:52, Eliezer Moskovitz wrote:
> Hi all,
> I'm at the beginning of a new project and I need to choose the right
> platform for my project.
> So looking at this mailing list archive I have a few question:
> 1. Why do we need the boot-loader to move the kernel from flash to sram? My
> guess will be a performance issue, but how much faster is it?

flash is slower than sdram especially for writing, and the file system
stored in flash will slow down the whole system (not to mention the
limited number of writes in the flash ~10000 times) 

> 2. Is there any test for Net performance as a web server comparing to other
> platform?
> 3. I've seen a demo of a webserver at xilinx webpage and it uses the
> xil_microkernel. What are the advantages of using uclinux over microkernel?
uC-linux has a collection of apps which are tested over millions of diff
platforms (you don't need to re-invent the wheel nor the hot water) but
the performance is lower when you compare with a customized kernel. I
think actually that it's wrong to compare them, uC-linux is OK when you
are not flying planes with it, (the interrupt response is not very
predictable) if you care about the speed (not the overall speed but the
time response in case of an event) a simple kernel will do the job, with
the "disadvantage" of spending more time to write code (applications)

Hope this helps

Aurash   
> 
> Eliezer
>  
> 
> 
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