That said, if *CPU* power consumption is a major factor, generally this is mostly automatic, as modern CPUs generally “race” to complete work so that they can enter deeper C states. However, deep C states have been known to be the cause of many problems in certain types of network appliance configurations, to the point that best practice is often to disable deep C states. (Again, in a data center environment, this isn’t a big deal.)
I'm a newbie in the smartOS/illumos world. I have a FreeNAS mini (from ixsystems) that I wanted to convert to a smartOS server for my home. It's based on an Asrock C2750D4I motherboard with an 8-core Intel Avoton C2750 CPU. It's a low power setup, and I thought that I would experiment with reenabling deep C states to save even more.
Yep. Less than 24 hours later fmd was alerting me to problems with missed interrupts. (Wow! Fault management in illumos is amazing compared to everything else that I have used--FreeBSD and Linux.) I reverted to the stock configuration from SmartOS, and everything went back to normal. The extra dollar or two a month for power is ok with me.
Trust the experts that have responded (Keith W. and Garret D.). They really do know what they are talking about.
Thanks, John Grasty ------------------------------------------- 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
