New 6625WD Bios.....forgotten?

Rene thx, but why does it state in the sceenshot that some device drivers behave badly..... were there red spikes before??

also a eta that you guys think is feasible would be nice

 

The bit that amused me in Rene's latest screen dump was the absolute maximum latency of 719342 microseconds. That's 0.7 seconds! Something big must have happened for the CPU to be busy elsewhere for so long.

At least we know that Zepto are addressing the latency issue and it hasn't suddenly become yet another glitch to add to the list. Personally, I would love to have a semi-technical explanation of why this problem crept in. I have previously noted that it seems to be linked to the Santa Rosa support.

John

 

that is exactly what i am referring to, 0.7 sec is huge.

 

To save Rene going and looking for the answer, the explanation I was separately given was:

Anyway, it is, in computer terms, a long time. A bit like the receptionist taking a 4 hour lunch break so there was no one to answer the phone.

John

 

That shouldn't be necessary unless the hardware has some bad drivers which are hogging the CPU cycles. So disabling bits of hardware will help identify if there are driver problems. Of course, if that hardware is intentionally very busy then the latency for everything else will increase.

As a quick test of this theory, I checked the latency while running HD Tune on the internal HDD - no obvious increase in latency. Then I ran HD Tune on an external USB HDD - average latency approximately doubled with a few spikes above 500ms but none outside of the green zone. I should emphasise that this is on my Samsung X60 plus, which doesn't have a latency problem..

John

 

As I've mentioned before I have no ETA, but I know this BIOS has the highest priority with our Product & Quality Controller.
About what has been done before the screen shot I don't know, but I know they they are running various tests with the BIOS at the moment and the screen shot can have been taken at the end of these tests. I know when testing that they stress the machine as much as they can with the most possible programs at once.

 

I propose that blackbird edit his first post of this topic in order to summurize the informations about the new bios. Indeed, this is the third time Rene said that there is currently no ETA. (He 's gonna be tired)

Like
A new bios is currently under test.
It solves the problems of latency DPC.
There is still no release date.
The bios 004 removes DPC latencies but decreases the time of battery (no slfm) compared to the bios 011.

(Sorry for my english i'm french)

 

done and merci

 

I've just talked to the Product & Quality Controller and the reason for the extreme latency spikes measured was because he had been enableling and disabeling drivers and devices galore. He had been trying to push the system the most he could and then let everything be with everything enabled to take the screenshot.

 

Okay i just go this screenshot from the Product & Quality Controller. It is taken with the most recent BIOS and without him testing all sorts of stuff at the same time:

 

Could we expect a result like that both for the 6625 and the 6324/6224?

 

Hi,

any screenshot with Vista what is the DPC latency then
with the beta bios 015 ?

regards S-EH

 

Has anyone actually linked the high latency to the stuttering issues and slowdowns people have had? or is it just a guess that something will be better?

I mean, could we expect to see the graph go crazy in delay when the gpu hits 96degrees and the stuttering starts?

If noone has tested this, I sure can do it.

 

The DPC latency has nothing to do with the stuttering issue at all, but as a lot of people are using the 6625WD for music production we know that the DPC latency is also really important and we have now solved that.

 

What's about 6x24W?
Okay, problem isn't that bad as it's on the 6625WD but there IS one.
Or don't you know?

 

If we get positive feedback on the 6625WD BIOS, then the 6x24W users would be the next in line. We need to know if the implementation works on the 6625WD before we start implementing in the 6x24W BIOS to keep focus on the issues at hand.

 

still not as well as i hoped in terms of dcp latency and no way near what Rene's screenshot showed


(problem with my unit??)


* fan control is better i think..still need to test further (wrong fan turns on even during lightweight stuff like looking at pics/browsing web)

* dvd drive still missing in vista..still have to set ide device to none in bios for it to show up

* not as mny brightness levels as 004 BIOS

* cpu idle % is fine now, at 0-7 %


perhaps i have a problem with my unit and need to send it in ?? still under warranty and i have broken my hand so not using it as often

 

sounds good, i'll be waiting ;D

 

So any ideas as to what is causing the stuttering issue. There are a lot of people having trouble with this issue. Surely DPC latency would have a lot to do with this problem as any latency is bad and as DPC latency is at the kernel level it would cause a problem with all devices in the system. How much a problem depends on how well all the device drivers and bios is written.
Have a look at http://www.thesycon.de/deu/latency_check.shtml under the "Background Information" section for more on this.