On 9/23/16 14:20 , Adam Richmond-Gordon wrote: > Hello all, > > I (seem to) remember some time ago that the general advice was to disable > power management where possible. Is this still correct, or have I been > imagining this all along? > > I recently took delivery of a box with an E5 v4 CPU, and SmartOS would panic > on boot due to expecting the `mwait` CPU feature. I have managed to get the > box to boot by allowing C0-C2 states, but it is somewhat unstable. > Although I do think this is quite likely to be a hardware issue, which CPU > power management features can SmartOS actually take advantage of, and what is > recommended? > > I plan to open an RMA for the box next week, but it’s probably worth making > sure that my running configuration is actually valid, first. > > If memory serves me correctly, the CPU and board firmware can support a > variety of C-, T- and P-states, amongst other features that either aren’t > selectable or don’t exist on other hardware I have.
In general, our recommendation is to disable the deep C-States. So we leave T- and P- states enabled, but not C3 and C6, etc. That help? Robert ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
