Hello, On Thu, Sep 08, 2016 at 09:49:14AM +0800, Hardik A Gohil (WMSC-HW) wrote: > I am working on Linux 3.2.0. Wow, you're still developing on a kernel that is 4.5 years old and you're not even taking the stable updates. > We had a requirement to make Linux Real Time so using RT-PREEMPT > (patch-3.2-rt10.patch.bz2) Even if you stick to 3.2.x, there is 3.2.82-rt118. > We are facing a network hang issue while running the periodic task of 5 ms. > > cannot ping any more when task is running is ran for some time. > > I am using Timer fd protocol to achieve this. > > I would like to know if there is such know issue in this patch. > > Any help will be appreciated. I bet you won't find help here until you reproduce the issue with a recent kernel (currently there is v4.6.7-rt11) and show the code of your periodic task. Best regards Uwe -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | http://www.pengutronix.de/ | -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html