davros303 Posted September 3, 2012 Share Posted September 3, 2012 Hi Andre,Well I seem to have finally fixed my endless DPC problems. I performed a fresh install of Windows 7 and carefully installed all drivers and updates for everything in the following order:- Asus motherboard drivers- Flashed the BIOS and reinstalled latest vers.- AMD CPU drivers- All Windows 7 important updates incl SP1- GPU drivers- and lastly, the drivers for the external firewire audio device.Hardware wise, I changed the slot that the GPU was installed on. I had it in PCI slot 3, and on reading the manual, they recommended slot 1 for the GPU. I also removed an Astrotek PCI firewire adapter card which was not being used.Something in that mix of changes was the secret sauce to fixing the DPC problems. Now I can run video, audio, flick between screens rapidly at any resolution and DPC never peaks above about 153. I've even still got aero running. I've got fingers and toes crossed that this remains stable, but this is the first time I've ever had Win 7 so calm since first installing it 18 months ago. I was never able to install and run my audio production software through Windows 7 due to these issues and had a dual boot machine so I could run XP side by side. Now I'm going to give it another go and see if I can run everything inside the one O/S.Many thanks for all your help Andre. Really appreciate it. Link to comment Share on other sites More sharing options...
davros303 Posted September 3, 2012 Share Posted September 3, 2012 Oh - the other thing I did was install everything "lean". I did not install the AI utilities for Asus, after you said you spotted the AiCharger.sys misbehaving.I also only installed the graphics drivers for the GPU - not PhysX, or 3D etc etc. Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted September 3, 2012 Author Share Posted September 3, 2012 nice to hear that everything is fine now Link to comment Share on other sites More sharing options...
war59312 Posted September 19, 2012 Share Posted September 19, 2012 What do you think?dpc.txt: http://www.datafilehost.com/download-246f837d.htmlDPC_Interrupt.etl: http://www.datafilehost.com/download-4c56bb18.html Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted September 19, 2012 Author Share Posted September 19, 2012 The values are fine. Highest spikes (only 2) are between 128 and 256µs:Total = 4905Elapsed Time, > 0 usecs AND <= 1 usecs, 1858, or 37.88%Elapsed Time, > 1 usecs AND <= 2 usecs, 895, or 18.25%Elapsed Time, > 2 usecs AND <= 4 usecs, 1337, or 27.26%Elapsed Time, > 4 usecs AND <= 8 usecs, 644, or 13.13%Elapsed Time, > 8 usecs AND <= 16 usecs, 96, or 1.96%Elapsed Time, > 16 usecs AND <= 32 usecs, 55, or 1.12%Elapsed Time, > 32 usecs AND <= 64 usecs, 13, or 0.27%Elapsed Time, > 64 usecs AND <= 128 usecs, 5, or 0.10%Elapsed Time, > 128 usecs AND <= 256 usecs, 2, or 0.04%Total, 4905Do you have any kinds of issues? Link to comment Share on other sites More sharing options...
war59312 Posted September 20, 2012 Share Posted September 20, 2012 LatencyMon says I have an issue.Please see attachment. Looks like some network driver.Sadly both my drivers are the latest already.Generic Marvell Yukon 88E8053 based Ethernet Controller - 11.45.4.3 - 3/23/2012Realtek PCIe GBE Family Controller - 7.56.316.2012 - 3/16/2012 Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted September 20, 2012 Author Share Posted September 20, 2012 make a new trace and this time capture 30 - 60seconds!! Link to comment Share on other sites More sharing options...
war59312 Posted September 20, 2012 Share Posted September 20, 2012 (edited) dpc.txt: http://www.datafilehost.com/download-9860fdd5.htmlDPC_Interrupt.etl: http://www.datafilehost.com/download-1c60bd97.htmlUpdate: I updated my USB 3 driver @ http://www.station-drivers.com/page/renesas.htm and installed KB2654363 hotfix (http://support.microsoft.com/kb/2654363) and seems to have fixed the issue. LatencyMon has been running for 11 minutes now and still good, where as before after 10 seconds every single time it would say there was a problem.Sadly I could NOT update the firmware. It blue screens every time so still on Firmware Version 3021.Though still have what seems a very high hard page fault of 10,674us.Looks like Comodo Firewall is the main one at 193 hard faults followed by explorer at 96.Seems odd since I have 16GB of RAM of which 11GB is free according to Process Explorer.Page file setting is set to be controlled by Windows._________________________________________________________________________________________________________CONCLUSION_________________________________________________________________________________________________________Your system appears to be suitable for handling real-time audio and other tasks without dropouts. LatencyMon has been analyzing your system for 0:11:00 (h:mm:ss) on all processors in the system._________________________________________________________________________________________________________SYSTEM INFORMATION_________________________________________________________________________________________________________Computer name: WILL-DESKTOPOS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)CPU: GenuineIntel Intel(R) Core(TM) i7 CPU 930 @ 2.80GHzLogical processors: 8Processor groups: 1RAM: 16382 MB total_________________________________________________________________________________________________________CPU SPEED_________________________________________________________________________________________________________Reported CPU speed: 2812.0 MHzMeasured CPU speed: 3126.0 MHz (approx.)Note: reported execution times may be calculated based on a fixed reported CPU speed. Disable variable speed settings like Intel Speed Step and AMD Cool N Quiet in the BIOS setup for more accurate results._________________________________________________________________________________________________________MEASURED KERNEL TIMER LATENCIES_________________________________________________________________________________________________________Highest measured kernel timer latency (µs): 320.393676_________________________________________________________________________________________________________MEASURED SMIs AND CPU STALLS_________________________________________________________________________________________________________Highest measured SMI, IPI or CPU stall (µs) 0.364084_________________________________________________________________________________________________________REPORTED DPCs_________________________________________________________________________________________________________Highest DPC routine execution time (µs): 882.672831Driver with highest DPC routine execution time: tcpip.sys - TCP/IP Driver, Microsoft CorporationHighest reported total DPC routine time (%): 0.047319Driver with highest DPC total execution time: USBPORT.SYS - USB 1.1 & 2.0 Port Driver, Microsoft CorporationTotal time spent in DPCs (%) 0.106778DPC count (execution time <250 µs): 1310440DPC count (execution time 250-500 µs): 0DPC count (execution time 500-999 µs): 69DPC count (execution time 1000-1999 µs): 0DPC count (execution time 2000-3999 µs): 0DPC count (execution time >=4000 µs): 0_________________________________________________________________________________________________________ REPORTED ISRs_________________________________________________________________________________________________________Highest ISR routine execution time (µs): 190.926031Driver with highest ISR routine execution time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft CorporationHighest reported total ISR routine time (%): 0.040057Driver with highest ISR total time: dxgkrnl.sys - DirectX Graphics Kernel, Microsoft CorporationTotal time spent in ISRs (%) 0.067320ISR count (execution time <250 µs): 1161805ISR count (execution time 250-500 µs): 0ISR count (execution time 500-999 µs): 0ISR count (execution time 1000-1999 µs): 0ISR count (execution time 2000-3999 µs): 0ISR count (execution time >=4000 µs): 0_________________________________________________________________________________________________________ REPORTED HARD PAGEFAULTS_________________________________________________________________________________________________________Process with highest pagefault count: noneTotal number of hard pagefaults 748Hard pagefault count of hardest hit process: 230Highest hard pagefault resolution time (µs): 10674.473684Total time spent in hard pagefaults (%): 0.00360Number of processes hit: 0_________________________________________________________________________________________________________ PER CPU DATA_________________________________________________________________________________________________________CPU 0 Interrupt cycle time (s): 3.315328CPU 0 ISR highest execution time (µs): 10.68990CPU 0 ISR total execution time (s): 0.282464CPU 0 ISR count: 664792CPU 0 DPC highest execution time (µs): 882.672831CPU 0 DPC total execution time (s): 1.194685CPU 0 DPC count: 637364_________________________________________________________________________________________________________CPU 1 Interrupt cycle time (s): 0.743772CPU 1 ISR highest execution time (µs): 15.940256CPU 1 ISR total execution time (s): 0.233335CPU 1 ISR count: 65953CPU 1 DPC highest execution time (µs): 54.566145CPU 1 DPC total execution time (s): 0.089894CPU 1 DPC count: 67341_________________________________________________________________________________________________________CPU 2 Interrupt cycle time (s): 0.248988CPU 2 ISR highest execution time (µs): 7.499289CPU 2 ISR total execution time (s): 0.011901CPU 2 ISR count: 4243CPU 2 DPC highest execution time (µs): 50.792319CPU 2 DPC total execution time (s): 0.053041CPU 2 DPC count: 10665_________________________________________________________________________________________________________CPU 3 Interrupt cycle time (s): 1.018640CPU 3 ISR highest execution time (µs): 20.317212CPU 3 ISR total execution time (s): 0.003629CPU 3 ISR count: 286CPU 3 DPC highest execution time (µs): 49.347084CPU 3 DPC total execution time (s): 0.065467CPU 3 DPC count: 40899_________________________________________________________________________________________________________CPU 4 Interrupt cycle time (s): 1.125730CPU 4 ISR highest execution time (µs): 0.0CPU 4 ISR total execution time (s): 0.0CPU 4 ISR count: 0CPU 4 DPC highest execution time (µs): 41.036984CPU 4 DPC total execution time (s): 0.079731CPU 4 DPC count: 43175_________________________________________________________________________________________________________CPU 5 Interrupt cycle time (s): 0.834373CPU 5 ISR highest execution time (µs): 8.869132CPU 5 ISR total execution time (s): 0.220760CPU 5 ISR count: 90423CPU 5 DPC highest execution time (µs): 298.725462CPU 5 DPC total execution time (s): 0.240074CPU 5 DPC count: 68575_________________________________________________________________________________________________________CPU 6 Interrupt cycle time (s): 1.144007CPU 6 ISR highest execution time (µs): 0.0CPU 6 ISR total execution time (s): 0.0CPU 6 ISR count: 0CPU 6 DPC highest execution time (µs): 45.170697CPU 6 DPC total execution time (s): 0.131362CPU 6 DPC count: 63188_________________________________________________________________________________________________________CPU 7 Interrupt cycle time (s): 6.856097CPU 7 ISR highest execution time (µs): 190.926031CPU 7 ISR total execution time (s): 2.803134CPU 7 ISR count: 336108CPU 7 DPC highest execution time (µs): 107.435277CPU 7 DPC total execution time (s): 3.784764CPU 7 DPC count: 379302_________________________________________________________________________________________________________ Edited September 22, 2012 by war59312 Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted September 21, 2012 Author Share Posted September 21, 2012 the hardfaults occur when explorer shows the UAC prompt. What confuses me a bit is, that you have disk issues shown in the system information:5 - inferred; WARNING: Disk configuration information is invalid.Which HDDs do you use? Link to comment Share on other sites More sharing options...
doveman Posted September 21, 2012 Share Posted September 21, 2012 dpc.txt: http://www.datafilehost.com/download-9860fdd5.htmlDPC_Interrupt.etl: http://www.datafilehost.com/download-1c60bd97.htmlUpdate: I updated my USB 3 driver @ http://www.station-drivers.com/page/renesas.htm and seems to have fixed the issue. Hey thanks, I'm not having any problems at the moment but I didn't even realise my USB3 driver was out-of-date.Sadly I could NOT update the firmware. It blue screens every time so still on Firmware Version 3021.I'm not sure which USB3 chip you have (I can't see a firmware v3.0.2.1 on that page) but I managed to update my uPD720200 ports to 4.0.2.0 by taking the commandline utility from an earlier package and following the advice here http://pete.akeo.ie/2011/10/flashing-necrenesas-usb-30.htmlThe GUI utility doesn't work as it says there's more than one port and quits, which seems rather daft! Link to comment Share on other sites More sharing options...
war59312 Posted September 21, 2012 Share Posted September 21, 2012 @doveman Nice find, will give that a try some time. Yeah I had downloaded firmware v3.0.2.1 from station-drivers awhile back.@MagicAndre1981 Ok, yeah that is interesting.The ones it is warning about is my RAID setup and my eSATA 3Gb/s drive.And warns about Disk 5 which is my SATA 3 6Gb/s SSD drive. Link to comment Share on other sites More sharing options...
bruvau12 Posted October 2, 2012 Share Posted October 2, 2012 (edited) Hi, newbie here.I'm having an issue with my laptop having a cpu idle usage of 30% or so. I did some research and came across the hardware interrupt issue. I've also done a clean install and still had the high idle cpu usage. Anyway screenshot of my process manage and DPC latency is attached to this message.Does the windows performance kit work for windows 7? Because the one linked is for windows 8.I have tried to follow the tutorial but failing to make progress. Can someone help please? Edited October 2, 2012 by bruvau12 Link to comment Share on other sites More sharing options...
3Seven Posted October 3, 2012 Share Posted October 3, 2012 (edited) Hello everyone, new to the forums.Stumbled across this thread while looking for a solution to my high dpc latency on my PC; It occurs most while online gaming (game would stutter, frames would drop dramatically, and mouse would receive input lag all within 5 min of playtime), and while browsing the web. As suggested on this site among others, i ran a trace test as well as LatencyMon.dpc.txt: My linkDPC_Interrupt.etl: My link LatencyMon Report: My link (LatencyMon is showing the NDIS 6.20 driver as having the highest execution time.)LatencyMon listed by IRS: My linkLatencyMon listed by Executions: My linkI've tried updating all drivers to no avail, issue persists. I'm still new to PC's in general and having a hard time trying to figure out my next steps to resolve the issue. Any help would be extremely appreciated!Note: Tests were done while browsing websites randomly so as to reproduce the DPC latency.Pc Specs, Gateway fx6831-01: Windows 7 HP 64bit / i7 860 @2.8 (stock) / IntelH57 Mobo / 8 Gigs RAM / HD 5850 Edited October 3, 2012 by 3Seven Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted October 3, 2012 Author Share Posted October 3, 2012 Does the windows performance kit work for windows 7? Because the one linked is for windows 8.I have tried to follow the tutorial but failing to make progress. Can someone help please?yes it works. Where do you have issues to follow?Stumbled across this thread while looking for a solution to my high dpc latency on my PC; It occurs most while online gaming (game would stutter, frames would drop dramatically, and mouse would receive input lag all within 5 min of playtime), and while browsing the web. As suggested on this site among others, i ran a trace test as well as LatencyMon.DPC InfoElapsed Time, > 1024 usecs AND <= 2048 usecs, 70, or 0.06%Elapsed Time, > 2048 usecs AND <= 4096 usecs, 46, or 0.04%Elapsed Time, > 4096 usecs AND <= 8192 usecs, 23, or 0.02%Elapsed Time, > 8192 usecs AND <= 16384 usecs, 3, or 0.00%Elapsed Time, > 16384 usecs AND <= 32768 usecs, 1, or 0.00%Total, 119737Total = 1392 for module ndis.sysElapsed Time, > 1024 usecs AND <= 2048 usecs, 69, or 4.96%Elapsed Time, > 2048 usecs AND <= 4096 usecs, 46, or 3.30%Elapsed Time, > 4096 usecs AND <= 8192 usecs, 23, or 1.65%Elapsed Time, > 8192 usecs AND <= 16384 usecs, 3, or 0.22%Elapsed Time, > 16384 usecs AND <= 32768 usecs, 1, or 0.07%Total, 1392so ndis.sys causes most spikes. Does the issue also occur if you remove Symantec? I can see the driver is called at many times. Link to comment Share on other sites More sharing options...
3Seven Posted October 3, 2012 Share Posted October 3, 2012 (edited) so ndis.sys causes most spikes. Does the issue also occur if you remove Symantec? I can see the driver is called at many times.I'm having difficulty killing my Symantec/Norton 360 at the moment, it refuses me access. It's funny, because the possibility of it being my AV never even crossed my mind; will update once i've figured out how to kill all Norton processes to test again. Edited October 3, 2012 by 3Seven Link to comment Share on other sites More sharing options...
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