четвъртък, 16 юни 2016 г., 6:38:03 UTC+3, Stefan Monnier написа: > > I like to use A20 boards for little NAS-style servers, because of their > very low power consumption. > > But so far I'm not impressed w.r.t reliability (large part of the > problem being to get a reliable enough power adapter, it seems). > > So, I'm looking for recommendations for an A20 board (with SATA) where > the main issue is for it to be reliable (i.e. where I should be able to > expect it to keep on running 24/7 for 5 to 10 years, like my old ASUS > WL-700gE). > > > Stefan >
Hi, I don't know what software you are using, but something seems broken with Debian Jessie and we still can't figure out what is it. A20-LIME (one memory chip) works fine with kernel 3.4 and mainline kernel with both Jessie and Wheezy. A20-LIME2 (two memory chips) crashes with Jessie on the stress tests after 10-12 hours of work, but never crash with Wheezy with same processor and memory setup no matter what kernel and uboot you use. After lowering the DDR clock from 480 to 384Mhz Jessie stops crash on the stress tests. This is the weird embedded world where everything is mix of hardware and software and you never know what to blame. We temporary made LIME2 Jessie image with lower DDR clock until we catch what introduces these problems with Jessie. We have A20-LIME2 with Wheezy working 24/7 for more than two years and never had it down. This problem with Jessie was reported by customer few weeks ago, it's hard to reproduce as it happens after hours of work. We ran tests for weeks with different setting until we found that lowering the DDR clock somehow cure this issue. This doesn't have logic for now, but I'm sure when we get to the root of the problem everything will make sense :) Tsvetan -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
