[Xenomai] ipipe-gch-ipipe-3.0-imx6q latency

eric ericvic at 163.com
Mon Dec 14 03:13:57 CET 2015


It is much better with 3.18.20 ,it is  the test result with xenomai-3.0.1   500us cycle ,still a little big ,thanks!
-sh-2.05b# [  154.812032] pmax: 0.597303 ms
[  245.216863] pmax: 0.600940 ms
[  249.992395] pmax: 0.603288 ms
[  277.280006] pmax: 0.610470 ms










At 2015-12-08 19:23:20, "Gilles Chanteperdrix" <gilles.chanteperdrix at xenomai.org> wrote:
>On Tue, Dec 08, 2015 at 06:43:02PM +0800, eric wrote:
>> hello:
>> I use xenomai-2.6.4 with kernel
>>         ipipe-gch-ipipe-3.0-imx6q.tar.bz2 with sample test , build
>>         the flow module with timer 250us cycle,if I make a user
>>         space application with memory copy ,the kernel latency
>>         will very big ,why??? thanks
>
>Do you have the same problem if you use a recent mainline kernel?
>Such as 3.14 or 3.18 ?
>
>-- 
>					    Gilles.
>https://click-hack.org


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