Could you not also pin process' to cores, preventing switching should help too? I've done this for performance reasons before on a 24 core Linux box
Sent from my HTC Desire On 16 Feb 2011 05:12, "Richard Elling" <richard.ell...@gmail.com> wrote: > On Feb 15, 2011, at 7:46 PM, ian W wrote: > >> Thanks.. >> >> given this box runs 18 hours a day and is idle for maybe 17.5 hrs of that, I'd rather have the best power management I can... >> >> I would have loved to have upgraded to a i3 or even SB but the solaris 11 express support for both is marginal. (h55 chipset issues, no sandybridge support at all etc) > > I think there are options here, but there are few who will care enough to spend the > time required to optimize... it is less expensive to buy lower-power processors than > to spend even one man-hour trying to get savings out of a high-power processor. > But if you are up to the challenge :-) try disabling cores entirely and leave the remaining > two or three cores running without C-states. You will need to measure the actual power > consumption, but you might be surprised at how much better that works for performance > and power savings. > -- richard > > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
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