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Hey Chris,
I regret going to this single processor in spite of the HT. Dual processors is by far the best with TS2ki or TS8. There have been cases I hear of systems that don't work well with HT. My guess is it is a driver issue on some piece of hardware. They didn't have core2duo when I built this unit. Core2duo is kind of like a V12 verses a four cylinder.
What is your CPU when Tradestation is not running? Should be 1 to 4%. 50% is no problem though when TS8 is running and the market is moving. You don't want to see 100% on one processor for a long time. Or one side of the processor.
Jimmy
Hi Jimmy,
By full HT I mean as run by XP. W2000 doesn't fully support all the little
HT tricks. On multi-processors... some folks on the TS lists with dual
processor systems were having some similar things, but not as bad as me.
Good info. Makes me more convinced I have a dead rat someplace. Just can't
figure out where. Brand new, absolutely clean XP install. Ran the latest
intel inf file, installed drivers and that's it.
Supposedly the best thing now is the new core2duo. Shares caches between
cores. I hate to go thru the hassle - while the stuff that I use looks
complex, virtually nothing is realtime. Fed mtg today my cpu just got up to
50% for a couple of minutes. Normally it runs 5-15%.
There are a lot of folks that think that HT is not really compatible with
TS, find they work better without. I am wondering if there is some fine
point of the setup that gets commonly blotched... a couple of other folks
besides you said theirs worked fine. Geez, I hate messing with this stuff.
I figured out how to properly switch XP to no HD (along with bios) and think
I will try that tomorrow. See how it goes.
Thanks again,
Chris
----- Original Message -----
From: "Jimmy Snowden" <jhsnowden@xxxxxxxxxxxxx>
To: "Chris Cheatham" <chris_c@xxxxxxxxxx>; "Omega-List"
<omega-list@xxxxxxxxxx>
Sent: Thursday, March 22, 2007 12:35 AM
Subject: Re: TS 8.2 w/ HT or multi processors
> Chris,
> Never had a problem with it. Only ran TS8 on a hyperthreading machine.
> Ran versions 3159, 3247 and 3258. I am unclear what you mean by full
> hyperthreading. Also unclear what you mean by
> hyperthreading/multi-processors. I used a dual processor for years with
> TS2ki. Only way to go. Now use a hyperthreading machine for TS2ki and
> TS8. Works fine even with both TS programs running. Have not run a new
> processor with two processors on one chip. Should make no negative
> effects. My guess is you did something fancy and messed it up. I'm not
> even sure TS8 can utilize a dual or hyperthreading processor properly.
> TS2ki can.
> Give us more detail as to what you did or just undo it.
> Jimmy
> Hi gang,
> Anyone out there know much about hyperthreading/multi-processors? I
> finally
> gave up my trusty old Win 2000 for XP, and set up my P IV to do full HT.
> I'm
> having some really bizarre problems with TS 8.2. It might just be
> something
> going on with TS - seems quite a few folks have issues now - but given the
> magnitude of what I am seeing and the new install I still wonder if
> something else might contribute.
> What is happening is the are amazingly large context switchs by the orplat
> and orchart services, and mainly when both charts and matrix/market depth
> windows are open at the same time. By large I mean stable 10-20,000/sec,
> and
> with volume can easily climb to 70-80,000. The same processor with w2000/
> no
> HT would maybe hit 2000 on very busy times. Along with the context
> switches, both orchart and orplat are running way more cpu than they
> should.
> For example, a single matrix used to run maybe 1-2 pct on orplat. Now it
> 15-30%. And orchart cpu use increases considerably due to the switching as
> well. The more matrix windows, the more switching.
> If you close the matrix window and just run charts, everything is fine.
> There will be an occasional blip really high, but the devastating cpu
> effect is gone . OK, now here's the kicker... if you set the affinity of
> orplat and orchart to the same cpu, the switching goes away. So that makes
> me thing that it's a cache miss or common memory thing. Affinities are not
> a
> good solution long term though, as it is much easier to peg half the
> processor.
> I have tried everything I can think of and can't find anything wrong on
> the
> pc. Intel Inf files were run...then I ran all the Intel HT diagnostics and
> they are perfect. Bios is current. I tried running with nothing else at
> all
> on the pc. Nothing changes. Other than inability to use matrix, HT is much
> smoother than without. FED day today was super smooth.
> I know there are some PC wizards out there. If anyone has any ideas, I'd
> be
> most appreciative.
> Best,
> Chris
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