I was wrong... EIST do not include down-clocking :)
So: boost can be enabled even without enabling power saving...
(but maybe it will never kick in due to higher temps / higher power
drain in the cpu?)
with i7z tool I have yet to be able to see the boost kick in... even
while compiling a kernel (that put a lot of stress on all the cores...
but without freq increases........)
Il 02/09/2010 01:30, Marco Padovan ha scritto:
As I said earlier turbo mode requires speedstep to be enabled (at
least on the supermicro mobos I've tried)...
so the cpu will also downclock when idle (that's the speed step
speciality...)
I dunno if certain motherboards allows you to use turbo without
enabling speedstep... mines doesn't :(
Il 02/09/2010 01:15, Ben Mendis ha scritto:
If I understand it correctly, Turbo mode allows you to over-clock your
active cores when other cores are idle.
With Speed Step, your cores would normally operate a lower speed, like 50%,
and increase on demand.
With Turbo, your cores would normally operate at 100% but if one of them
isn't needed it gets disabled and the rest get a boost to 110%. (Not sure on
the numbers, someone else can correct me.)
So my question is what do you consider "full bore"? Do you consider it full
bore to lock all your cores at 100%? Or to over-clock all of them to 110%?
Or to disable all but one and over-clock that one core to the max?
If consistency is the goal, I would keep Turbo turned off. I'm sure the
engineers at Intel did some smart math to make sure Turbo would, in general,
improve over all performance; but improvements to the average performance
might come at the cost of significant temporary performance loss. I don't
have any science to back up that supposition, so maybe it's not a valid
concern. Better safe than sorry, right?
On Wed, Sep 1, 2010 at 6:11 PM, EkaInfinitos<ekainfin...@gmail.com> wrote:
I know I personally feel better about having my server cores running full
bore instead of trying to dynamically scale themselves. For my gameservers
and database servers, I want full power all the time, power consumption can
sit down and be quiet. Until chipmakers introduce processors with
precognitive abilities, I would rather take the hit on the power bill than
have performance or customer experience suffer.
This is why I am in IT and not financial.
~Eka
-----Original Message-----
From:hlds_linux-boun...@list.valvesoftware.com
[mailto:hlds_linux-boun...@list.valvesoftware.com] On Behalf Of Marco
Padovan
Sent: Wednesday, September 01, 2010 1552
Cc: Half-Life dedicated Linux server mailing list
Subject: Re: [hlds_linux] newer xeon / i7 cpus: turbo mode enabled or
disabled?
Yeah, the name sounds "cool" :P
but the question is: turbo mode can be enabled ONLY if you enable the intel
enhanced speed step... normaly speedstep (and frequency scaling in
general) ain't very good for servers environment... isn't it?
Il 01/09/2010 23:33, Karl Labrador ha scritto:
I've got turbo mode enabled on my Xeon X3450 box. I don't see why not?
It's so fancy! :-D
On 1 September 2010 23:27, Marco Padovan<evolutioncr...@gmail.com
<mailto:evolutioncr...@gmail.com>> wrote:
What are your feelings about TURBO mode when running a dedicated
server focusing on linux steam games hosting?
Personally I think that in theory it should be good to have it
enabled (can give an extra juice on certain cores if others in
idle)... but what about thinks like fps stability and tickrate?
Does the constant frequency fluctuation is giving you any trouble?
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