You might look at changing your distribution if a shutdown on the pi is taking that long.
I'm using archlinux in a mobile application and it will fsck and unmount the filesystems, and complete the halt, in ~2-3 seconds. On Wed, Apr 24, 2013 at 12:20 PM, Ralph Stirling < ralph.stirl...@wallawalla.edu> wrote: > I think when I pick up a couple of these this summer, I will > try incorporating an ultracapacitor-based "UPS" that can > hold up power for the ten seconds required for a true shutdown, > along with powerfail detection to initiate the shutdown. The > Raspberry Pi took well over 30 seconds for a shutdown, which > seemed likely to be too long for a simple powerfail scheme. > Otherwise these boards seem almost perfect for my applications. > > -- Ralph > > ________________________________________ > From: Jon Elson [el...@pico-systems.com] > Sent: Wednesday, April 24, 2013 9:21 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] "Black BeagleBoard: available at $45" (was > LinuxCNC would be very nice on the UDOO board.) > > Kent A. Reed wrote: > > I wonder if the built-in flash memory of the new > > BeagleBone Black can have this problem too? That would be a nasty > surprise. > > > Yeah, this really made my ears perk up, too, with all the talk about > failed SD cards. If these on-board memories suffer the same problem, > they have a BIG disaster looming! But, if you only use the on-board > memory for the boot directory, and have the Linux / directory on > an external SD card, then there probably is no problem, especially > if you can prevent all writes to the internal memory. if it is never > written, it will never have to invoke the wear-leveling, which is > at least thought to be related to the failures. > > Jon > > > ------------------------------------------------------------------------------ > Try New Relic Now & We'll Send You this Cool Shirt > New Relic is the only SaaS-based application performance monitoring service > that delivers powerful full stack analytics. Optimize and monitor your > browser, app, & servers with just a few lines of code. Try New Relic > and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
