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Comp.Arch.FPGA | Start-up Xilkernel on Microblaze

There are 3 messages in this thread.

You are currently looking at messages 0 to 3.

Start-up Xilkernel on Microblaze - Yannick - 2007-11-24 08:03:00

Hi,

How many long Xilkernel take to startup with microblaze (System
Clock : 50 MHz).
On my design, the Microblaze need more than 30 second to create the
first thread after xil_kernel_main().

Regards,

Yannick
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Re: Start-up Xilkernel on Microblaze - Vasanth Asokan - 2007-11-26 14:33:00

"Yannick"
<y...@gmail.com> wrote in message 
news:0...@w28g2000hsf.googlegroups.com...
> Hi,
>
> How many long Xilkernel take to startup with microblaze (System
> Clock : 50 MHz).
> On my design, the Microblaze need more than 30 second to create the
> first thread after xil_kernel_main().

Sounds like you have a large context switch interval configured. Check the 
value for the parameter systmr_internal (specified in milliseconds) in the 
kernel configuration. Also check if an incorrect value has been provided to 
systmr_freq. Assuming these two values are correct, the first context switch 
should take around about the time you have specified for systmr_interval. 
Note the kernel initialization time is dependent on the numbers you have 
configured for the various kernel features like number of 
threads/semaphores -- but unless you threw in a huge number there, this 
overhead should be negligible.
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Re: Start-up Xilkernel on Microblaze - Yannick - 2007-11-27 07:49:00

On 26 nov, 20:33, "Vasanth Asokan"
<vasa...@xilinx.com> wrote:
> "Yannick" <yannick.d...@gmail.com> wrote in message
>
> news:0...@w28g2000hsf.googlegroups.com...
>
> > Hi,
>
> > How many long Xilkernel take to startup with microblaze (System
> > Clock : 50 MHz).
> > On my design, the Microblaze need more than 30 second to create the
> > first thread after xil_kernel_main().
>
> Sounds like you have a large context switch interval configured. Check the
> value for the parameter systmr_internal (specified in milliseconds) in the
> kernel configuration. Also check if an incorrect value has been provided to
> systmr_freq. Assuming these two values are correct, the first context switch
> should take around about the time you have specified for systmr_interval.
> Note the kernel initialization time is dependent on the numbers you have
> configured for the various kernel features like number of
> threads/semaphores -- but unless you threw in a huge number there, this
> overhead should be negligible.



when I remove verbose mode, xilkernel start-up in less than 1 second.

Yannick