Re: Latency problem in rtai-4.0 with kernel 3.5.7

You should run the latency test alone and check if the 4 ms latency 
appears periodically.
Paolo

On 04/05/2016 04:49 PM, Sameer wrote:
> hi,
>
> Please find attached latency test result.
>
> Iam facing latency problem in my real time application.I have 4 real 
> time task exucting in user space at 10ms & one kernel module task 
> which is executing at 1ms.
>
> my application is randomly stuck for 2-3 sec. sometimes greater than 
> this also. simulataneously i run latency test it also shows overruns 
> count more than 200.it is not deterministic behaviour.
> my current machine has below configuration
>
> 1.Ubunbtu-12.04
> 2.RTAI-4.0
> 3.kernel 3.5.7
> 4.Cpu core -Intel Pentium 4.
> 5.Timer-tsc.
> 6.No. of core-1.
>
> The same applications work deterministic in my older system which has 
> kernel 2.6.23 & rtai-3.9 & centos distro with same PC.
>
>
> Is there any problem with kernel or rtai or ubuntu or kernel 
> configuaration?
>
> Please let me know any solution for this problem.
> -- 
> Thanks & Regards,
>
> *Sameer Zungare*
> +91 9021918228
> */iASYS/*
> *Product Development Center*
> 401 A/2, Nano Space
> Baner-Pashan link road, Baner
> Pune 411045, India
> Ph. +91 96234 47255 ext. xxx
> www.iasys.co.in

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