On Thu, Aug 1, 2013 at 8:13 PM, Pavel Machek <pa...@ucw.cz> wrote: > Hmm. So I've update bios using 7buj28uc.iso . Reverted the patches and > yes, ping latencies are still bad:
Wow. I can hardly believe how bad this is (assuming Windows has the same problem). Thanks a lot for checking this out. >> >> Carolyn's patch will likely work, at least most of the time, but I >> >> think there's a small possibility that it could cause a conflict >> >> between the BIOS and the OS over ASPM control, so I'm not 100% in >> >> support of that approach. A conflict may not happen on your >> >> machine, >> > >> > Can we base it on DMI whitelist? >> >> I don't think we can know a priori whether a machine (even your >> machine) is susceptible to a conflict. But if Carolyn forcibly > > We don't apriori now how broken machines are, true. There are 1000 > ways BIOS can break things. And yes, it will be us breaking the specs > here. But "useful machine with OS breaking specs" is better than > "machine useless for ssh". > > _If_ there's a conflict, we can try something else. > > (Has someone really seen a conflict, or is it just theoretical thing?) Completely theoretical, as far as I know. I don't even know what a conflict would look like. Maybe some unexpected ASPM enable/disable from SMM during suspend/resume or something. Things like that would likely go unnoticed anyway. Bjorn -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
