Gigabyte GA-X58A-UD7 Excessive DPC Latency

[eastley]

Hi all, from Australia. No gigabyte forums for us

Anyway, I have the GA-X58A-UD7, and I am suffering from High DPC latency, after some googling I found it may be the motherboard, and through testing it seems that this may be the issue.

Does anyone know if there is a planned fox for this?

To test DPC latency download the folling tool.

http://www.thesycon.de/deu/latency_check.shtml

I can spike above 1000, and at times, be above 25000 until I restart my PC. Which makes gaming/audio slow up and lag like hell.

Can a Bios update fix this?

[Dark Mantis]

Hi Cobber,
You might not have Gigabyte forums but you have VenGanZa and freinds on Whirlpool Forums. A very knowledgeable bunch too I might add.
If you do a search there was someone else complaining of the samething only the other day on this  site. Anyway Gigabyte are working on an BIOS update for our board the UD7 at the moment so hopefully it wont be too long and will do the trick.

[eastley]

Hi Cobber,
You might not have Gigabyte forums but you have VenGanZa and freinds on Whirlpool Forums. A very knowledgeable bunnch too I might add.
If you do a search there was someone else complaining of the samething only the other day on this  site. Anyway Gigabyte are working on an BIOS update for our board the UD7 at the moment so hopefully it wont be too long and will do the trick.

I know VenGanZa, good bloke.

Currently in the Sin Bin on whrilpool due to stepping over the mark with a comment about our new Prime Minister!

When I can post again I will ask on whirlpool, hope the new Bios is close.

[dkslim]

I'm the one who also noticed excessive DPC latency on the UD7. I would get red spikes that went off the top of the chart, when doing normal things like browsing the net. When I turned off C1E and EIST, I didn't get the red spikes anymore. So you might want to try turning those power saving features off, to see if it fixes your problem for now.

The DPC latency problem has been reported to Gigabyte headquarters, they are currently working on a new BIOS that hopefully fixes it properly and the electrical noise buzzing problem.

PS. I am in Australia and post on Whirlpool too my name there is Lim^^

[Dark Mantis]

I'm the one who also noticed excessive DPC latency on the UD7. I would get red spikes that went off the top of the chart, when doing normal things like browsing the net. When I turned off C1E and EIST, I didn't get the red spikes anymore. So you might want to try turning those power saving features off, to see if it fixes your problem for now.

The DPC latency problem has been reported to Gigabyte headquarters, they are currently working on a new BIOS that hopefully fixes it properly and the electrical noise buzzing problem.

PS. I am in Australia and post on Whirlpool too my name there is Lim^^

Cool I will keep an eye out for both of you when I am next on(oh I forgot I am on there still) Just remember no bad comments regarding the leadership!!

[venganza]

G'day Eastley mate.

Shame you got binned, must have been a hell of a comment (red heads rock btw).

Anyway, can you link us to whatever claims to mobo is to blame?

I find it hard to fathom, more often than not high latency or "spiking" is due to driver issues and suchlike.

Sadly if a ready solution can't be found, the only way I know of is to disable the whole lot progressively, and from memory DTP Latency page recommends just this.

I can tell you on my board *GA-X58A-UD9* my current latency is "0" with a maximum of "3"

Now of course my board is different, but I would be curious to read any literature of any substance that points the finger at your board.

[eastley]

G'day Eastley mate.

Shame you got binned, must have been a hell of a comment (red heads rock btw).

Anyway, can you link us to whatever claims to mobo is to blame?

I find it hard to fathom, more often than not high latency or "spiking" is due to driver issues and suchlike.

Sadly if a ready solution can't be found, the only way I know of is to disable the whole lot progressively, and from memory DTP Latency page recommends just this.

I can tell you on my board *GA-X58A-UD9* my current latency is "0" with a maximum of "3"

Now of course my board is different, but I would be curious to read any literature of any substance that points the finger at your board.

http://lmgtfy.com/?q=DPC+gigabyte

Have a read, pages to go through that suggest the same as I have found, but my way of testing was as follows.

- DISABLE everything that you do not need in the bios, includes NIC, SOUND etc..
- Remove all devices, including hard drives/Rom Drives and put in bottom end graphics card.

So you should have, 1 stick of ram, CPU, low end graphics and PSU.

Run Windows XP, from USB flash drive with a DPC testing program on it, with some music etc to do some testing.

Then play around while using the DPC program to monitor the latency.

Spikes still occur on my UD7.

Here is my PC during that test, at it's worse.

[dkslim]

Yikes, that's really bad. Mine is nowhere like that, I only get 1 red bar every once in a while, sometimes 2 in a row.
Have you turned off the power saving features, C1E and EIST?
Do you have much programs installed?
These are things to consider, as they might cause your severe spikes.

[venganza]

Yeah that is VERY VERY bad.

I am getting around 120 currently, very stable, on my old Q8200 I would have regular spiked around 1000, but sheesh nothing like your stuff, that is off the scale.

I will have to do some research, it isn't something I have looked into all that closely.

Oh do you have that link where they claim the motherboard could at issue? I would like to see the reasoning behind it.

[Dark Mantis]

Well I have just been testing my board GA-X58A-UD7 and running several open browser windows, email and a video as well as all the usual background programs it doesn't even top 100. So you must have some serious stuff going on there.

[venganza]

Well I have just been testing my board GA-X58A-UD7 and running several open browser windows, email and a video as well as all the usual background programs it doesn't even top 100. So you must have some serious stuff going on there.

^^^ Well that tends to indicate there is no global issue, which I presumed.

Might be worth clean install Win + checking latency.

[Dark Mantis]

Just done an extended test with Media Player, 3D Vantage and a streaming internet video all running at once and still no figures above 100. Been runnning about 30 minutes.

[Fatman]

Yeh I ran that test on my crusty ol'e X48-DQ6 win 7 64 Ultimate and I got about 4 spikes above 4000 :-( Anyhoo I have no issues with anything that I do so it's no probs for me. Just more garbage to fret and waste time over LOL.

[Balthazor]

Just a shot in the dark - but try changing your CPU Clock Skew to 900 mV under BIOS (default is 800, according to the manual.) 

That fixed a few issues for me.

[Fatman]

Just a shot in the dark - but try changing your CPU Clock Skew to 900 mV under BIOS (default is 800, according to the manual.) 

That fixed a few issues for me.

Actually made things worse for me :-(   But I am not worried about this test. Like I said before, I can do everything without any probs. So nothing to stress over..........Now back to Bios