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Microzed 7010 Sluggish response

100bobdxcool

I have ubuntu based OS (xillinux) installed on my zynq 7010 based microzed board (commercial version) and having certain scripts running on them outdoors. I have 10 such systems outdoors. But only on two particular systems, whenever I login to these system, the response from the terminal is very sluggish and CPU itself seems to be running slow. After I reboot the system, then it would start running normally, and then again after a few hours, shows up the same behavior. What could be the possible reasons for this ?

Some process is utilizing maximum CPU resources ?
Or the 8GB SD card quality isnt good (Currently using the SD card that came with the microzed kit) ? What SD card is recommended to be used if so ?

What else could be the issue ? Temperature (Currently the microzed sits on my custom designed PCB which is usually at a temperature of 30-35 C based on the temperature sensor I have on board)  ?

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  • 0

    Hi there,

    I want to let you know that we have a document which might be of some help:
    http://zedboard.org/support/design/1521/11

    Look for the Zynq How to Guides heading.  Find the document:
    SD Card Advice for Zynq 7000 SoC Products, which lists some model numbers of cards that we or that we have been told by customers which appear to work.  I would agree with Eli, just about any SanDisk card will work for you.  Personally, I've use a few and never had any issues.

    If you are going to be running 24x7, take his first post seriously.  Without write leveling you can destroy a SD card in no time!

    --Dan

  • 0 in reply to drozwood90

    Also regarding temperatures, my systems are used in New York city where the temperatures go to negative range in the winter. My commercial grade microzed sits on a custom made carrier card PCB which is always usually in the 30-35 C temperature range. And this whole setup is inside a abs enclosure which is turn inside a waterproof stainless steel enclosure fixed on the streets. So since the carrier card PCB is always at a positive temperature, is it  recommend to continue with the commercial version of microzed ?

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  • 0 in reply to drozwood90

    Also regarding temperatures, my systems are used in New York city where the temperatures go to negative range in the winter. My commercial grade microzed sits on a custom made carrier card PCB which is always usually in the 30-35 C temperature range. And this whole setup is inside a abs enclosure which is turn inside a waterproof stainless steel enclosure fixed on the streets. So since the carrier card PCB is always at a positive temperature, is it  recommend to continue with the commercial version of microzed ?

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  • 0 in reply to 100bobdxcool

    Hi,

     

    The Commercial MicroZed is rated and tested from 0 to 70 degrees C. The Industrial MicroZed is rated and tested from -40 to +85 degrees C, with the exception that the microSD Card connector is only rated from -25 to +85 degrees C, as noted in the MicroZed HW Users Guide.

     

    You should consider all the conditions your system may be operating in, including a situation where the system might be colder at initial power up, if that can occur in your application. So, if you might need to startup your system after it has been sitting at temps below 0 degrees C, I would suggest the Industrial version.

     

    -Gary