Hi Gordan, Am Freitag 19 August 2011, 11:18:31 schrieb Gordan Bobic: > As some of you may have already heard on the IRC channel, I had my > AC100 suddenly become very unstable under load. When doing big compile > [...] > My gut feeling at the moment is that the RAM could be over-timed so I'm > going to try modifying the kernel code to relax the RAM timings by a > notch.
we are not touching RAM timings so far on kernel 2.6.38. It may be possible that the original kernels does so. > The only competing idea is that Tegra2 comes pre-overclocked past the > stable limits for 100% load for prolonged periods. This wouldn't > surprise me either (Nvidia chips have proven unreliable in the past even > at their default clock speeds, both the motherboard chipsets and GPUs), > but I would like to think that Toshiba would have done some due > dilligence testing of their product. For comparison, my SheevaPlug is > compiling 24/7 for weeks at a time and has never errored out. It could also be related to power supply. What we do is modifing the voltage supplies for serveral power sources. I had the feeling, that Toshiba undervoltaged some CPU supplies in order to save energy (compared to other boards). So I increased SM1 from 1V to 1.2V which may have been wrong. It would be nice if you could test a .32 based kernel and see if it also happens there. Also you could try your new model. Finially, it could also be possible that this is a design bug, which may be hard to solve for us. Marc _______________________________________________ Mailing list: https://launchpad.net/~ac100 Post to : [email protected] Unsubscribe : https://launchpad.net/~ac100 More help : https://help.launchpad.net/ListHelp
