*Hi Robert * Ya I agree with Jason because if most of the time we are not running web servers using BBB but are interfacing BBB to the external world. So i am more worried about latency than throughput. Whats the risk of enabling CONFIG_PREEMPT in the kernel ?
*Hi Jason*, What were the issue that you mentioned were faced by BeaglePilot when using PRU ? Thanks On Wednesday, September 17, 2014 9:44:35 PM UTC+5:30, Jason Kridner wrote: > > On Wed, Sep 17, 2014 at 11:13 AM, Robert Nelson <robert...@gmail.com > <javascript:>> wrote: > > On Wed, Sep 17, 2014 at 9:53 AM, neo <prag....@gmail.com <javascript:>> > wrote: > >> Hi Jason > >> > >> Sorry to ask again. Will PREMPT be enabled in this ? > > > > Full "preempt" no, not by default, but i'm testing > "CONFIG_PREEMPT_VOLUNTARY".. > > > > I'm still a little worried about the: "cost of slighly lower > > throughput." for some applications we need all 1Ghz... > > I suspect most applications of BeagleBone Black will be more worried > about latency than throughput due to its "industrial" nature. > BeaglePilot, OpenROV, Lasersaur, MachineKit, Pocket NC, QuickBot, etc. > Sure, applications like Ninja Blocks, GrannyCam, and other "IoT"-ish > stuff might not care so much about latency, but they are probably more > interested in power management than absolutely highest performance. > Just my impression. > > Would love to encourage more people to share what they are doing at > http://beagleboard.org/project and to reach out for project spotlights > on http://beagleboard.org/blog to give us all more of an impression of > what people need and are doing. > > I'm more worried about if anything breaks like what the BeaglePilot > folks have been reporting about some PRU driver issues related to > PREEMPT. > > I will say that simply using the RT scheduler without PREEMPT still > makes things "pretty darn fast" (TM) as can be seen in the UCSD > BeagleMIP which runs the balancing algorithm as a normal Linux thread > w/o the PRUs, kernel task or PREEMPT. > > > > > Regards, > > > > -- > > Robert Nelson > > http://www.rcn-ee.com/ > > > > -- > > For more options, visit http://beagleboard.org/discuss > > --- > > You received this message because you are subscribed to the Google > Groups "BeagleBoard" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to beagleboard...@googlegroups.com <javascript:>. > > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
