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Prime95- one worker always a lot behind

post #1 of 15
Thread Starter 
Hi,
So I did a couple of custom blend tests using 13000 MB and I noticed that one of the workers (not always the same one) is a lot slower than the others. By a lot I mean 100 tests less after couple of hours...that's certainly not normal because I've seen many screenshots in other threads where all workers were pretty equal. Looking at performance monitor I can see that there are some services running in the background (I.e. SSDP Discovery) and I'm not sure if I should disable those services + run prime with high priority or is it a different issue?


Edited by Prezesiak - 8/15/12 at 9:08am
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post #2 of 15
Thread Starter 
Come on, no one else had this issue?

This is how it looks:



This time Prime was running with high priority....
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post #3 of 15
Not enough volts to the processor I presume.
post #4 of 15
Thread Starter 
Ok, testing now with higher vcore...terrible chip...currently 1.240V under full load @ 4.3GHz.

This is weird though - no prime errors, no WHEA errors in event log, no BSODs or other crashes, no IBT errors and yet it's not stable...I haven't seen anyone on this forum who would have similar issue.
Edited by Prezesiak - 8/16/12 at 8:41am
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post #5 of 15

What is with all this talk about WHEA errors lately?  I've been here for over 3 years, and now over the past month people are talking about WHEA errors.  I don't get it.

 

It's nothing against you, but who started all this?  They need to be silenced because whether or not there are WHEA errors means nothing.  I have no errors but according to the theory behind this WHEA stuff, I should have some errors because of the instability my system went through when I overclocked it

 

Anyway, I assume that having works fall behind by that much must mean that it's not quite stable yet.  BSODs, lock-ups, or crashes don't always occur when the system is unstable.

 

So I agree:  increase the core voltage at first a little at a time to see if this results in workers not falling behind as much.

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post #6 of 15
I always seem to have one core that lags a bit at the start. I have had those settings pass a 12 hour blend and fold for about a month with no issues too. I woudn't let it bother you.
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post #7 of 15
Stop using windows when you are testing. This is exactly what happens. You may have some background program that likes to use one or two of the cores, even if P95 is set higher in the task manager.

If you aren't using windows then run SuperPI, PCMark, etc and make sure the processor is performing up to par. Make sure processor usage is 0-1% when nothing is running.

EDIT: Make sure 13000MB of RAM is not too much. You do not want P95 using the page file, or this can happen. When P95 is running make sure your memory is at about 90%.
Quote:
Originally Posted by TwoCables View Post

What is with all this talk about WHEA errors lately? I've been here for over 3 years, and now over the past month people are talking about WHEA errors. I don't get it.

It's nothing against you, but who started all this? They need to be silenced because whether or not there are WHEA errors means nothing. I have no errors but according to the theory behind this WHEA stuff, I should have some errors because of the instability my system went through when I overclocked it

Anyway, I assume that having works fall behind by that much must mean that it's not quite stable yet. BSODs, lock-ups, or crashes don't always occur when the system is unstable.

So I agree: increase the core voltage at first a little at a time to see if this results in workers not falling behind as much.

It's some new crave.. I saw the thread awhile back some guy was really trying hard to say they matter.

I don't even check them, I still believe it's a load of crap.
Edited by Murlocke - 8/16/12 at 8:54am
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post #8 of 15

Yeah, it's best to not use the computer at all when Prime95 is running.  Close all programs that you're not using while you're away (like uTorrent), disable anti-virus, disable the screensaver, disable Windows Update, disable or close everything that would do something while you're not using the computer.

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post #9 of 15
Thread Starter 
I don't think 13000MB is too much:



I also didn't use my computer at all when prime testing.


About WHEA warnings, well, I just mentioned that because people have been talking about it a lot recently. IBT passes 20 tests on maximum stress test (with above 100 GFLOPS), prime passes 24 hours of custom blend test (15 min. for each FFT length) without any error. It's just this slow worker...

I'll do couple more tests and post the results
Edited by Prezesiak - 8/16/12 at 9:53am
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post #10 of 15

Well, it is still normal to have workers fall behind.  It's just that they all go at different speeds, so they get further and further apart as time goes on.

It's a computer!
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It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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