Clark Dunson <> wrote:
>I am also interested, thanks.
>Does anybody know whether compiling the main interrupt to use a
>slower speed,
>and/or using nice or renice to set the scheduling priority like -19,
>or -20 will make
>much of a difference?
>
>On Aug 12, 2011, at 4:17 PM, Walter Marvin wrote:
>
>>
>> you can't avoid technologic has a user space semaphore that they
>> test and force a tack switch if required the only way to avoid it
>> is to down all technologic servers
>>
>> From: tourindorian <>
>> To:
>> Sent: Friday, August 12, 2011 9:04 AM
>> Subject: [ts-7000] Avoiding task preemption by Linux kernel
>>
>>
>> Hi,
>>
>> I'm developing an application (C code) on the TS7550 board, using
>> Linux 2.6. I got an issue trying to use continuously the SPI bus
>> for 20ms.
>> Every 10ms, the communication is interrupted during about 0.5ms. I
>> guess the Kernel scheduler interrupts the process.
>>
>> Do you have any idea to fix it? Could I change the tick rate of the
>> scheduler so that it is about 50 or 100ms instead of 10ms? Could I
>> prevent the Kernel from preempting the task during that critical
>> section?
>>
>> Any idea would be useful :-)
>>
>> Many thanks,
>>
>> Dorian.
>>
>>
>>
>>
>>
>
------------------------------------
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/ts-7000/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/ts-7000/join
(Yahoo! ID required)
<*> To change settings via email:
<*> To unsubscribe from this group, send an email to:
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|