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DPC latency, constant stutter, ALL games affected, FPS OK - Page 4

post #31 of 35
YEah i had some 160GB hitachi hard drives back in the day that gave me that issue now that I think about it, had over 200 reallocated sectors with over 500 pending. But yeah that could explain why your PC is being a piece is because the HD is failing slowly.

Here is a Link to offical retail ISO's of Windows 7 SP1 and Windows 7 Non-sp Link
 
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Crucial M4 128GB SSD SATA 3.0 M4-CT128M4SSD1 Corsair H80i AIO liquid cooling Windows 7 Professional x64 47 inch Samsung LCD HD TV 
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CPUMotherboardGraphicsRAM
intel Core i5 3570k 4.5ghz 1.200v - 0.000 offset  Gigabyte z77X-UP4 TH Beta Bios F11C with lastes... Sapphire 7950 3GB @ 1200/1600mhz v1.299 - Curr... GSkill 2x4gb 1333mhz 7-7-7-21 2T @ 1600 8-8-8-2... 
Hard DriveCoolingOSMonitor
Crucial M4 128GB SSD SATA 3.0 M4-CT128M4SSD1 Corsair H80i AIO liquid cooling Windows 7 Professional x64 47 inch Samsung LCD HD TV 
PowerAudio
750w PC Power single rail stock 
CPUMotherboardGraphicsRAM
C2Q Q6600 GO @ 3.2ghz 1.28 Gigabyte P35 DS3-L Pencil modded Nvidia 9800 GT 512mb 2x1gb Gskill 1066 5-5-5-15 & 2x1gb Gskill Pi 80... 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 CT128M4SSD1 128GB SSD - OS Drive Samsung HD103UJ & SJ 1 Terabyte HDD LG 22x DVD burner Arctic Freezer Pro 2  
OSMonitorPowerCase
Windows 7 Pro SP1 x64 HannsG 27.5" Widescreen Red thingy 750w Single rail old raidmax from 1st build beat to death 
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post #32 of 35
Thread Starter 
Yep. Seagate tools says the drive fails, and the latency programs say the drive is the bottleneck now, too, after getting my BIOS straightened out. I took a chance and even stuck an IDE to SATA converter on the drive to see if it was the IDE port / controller but the drive comes up as crap no matter what.


I've had a feeling this whole time about the drive, or at least some kind of mainboard hardware failure after doing a clean boot with nothing running and whatnot. The video card just didn't add up, especially after disabling it and using the stock MS generic drivers and clean boot. Sad thing is my OS partition is on the failing drive and my secondary drive doesn't have enough room to handle swapping stuff over to it, so I get to try and buy a replacement drive and pray the failing drive doesn't crap out before then.

Even though it all sucks, at least it all makes sense now and I don't feel so crazy... that is until I install a new drive and somehow see that the issue persists.

As for isolation techniques, it sure is easier to narrow down stuff on a mac, especially compared to a PC that's had the wrong BIOS for as long as I've known. When I went to flash the BIOS from a thumb stick it tried to prevent me from doing so because the wrong BIOS that was installed was proc'ing a checksum error, and I had to use a flag on the DOS command to override it to force it to install the correct BIOS firmware. What a nightmare.

It's like trying to fix a Ford engine when it's been a Chevy engine the whole time and damn if I don't feel like a complete dumbass. Thanks, everyone, this thread has really helped, even if it's not the answer I wanted.

Cheers!
post #33 of 35
Thread Starter 
Ok, what a pain. I got screwed at Frys, all their drives were picked clean and I had about 3 different models to choose from. Someone must have bought em all up to make a server rack or something. Who knows. Since my choices were limited I spent way more than I wanted. Once I installed the drive I tried to use some programs to clone the OS disk over to the new one but eventually I had to use EaseUS Disk Copy which gives you a bootable ISO and a little GUI to do it after booting into it. I thought I could save some time by moving everything off of the disk except the OS partitions but the stupid program had to actually clone the entire drive, even the unallocated space so it took almost three hours. I thought it was my older IDE drive, but it turned out to be the newer SATA one that's crapping out which really surprised me.

One thing I notice is that dpclat.exe is just about useless. I think it causes its own dpc latency as it runs and it's unreliable, plus it doesn't actually tell you anything useful so I'd recommend ditching it to anyone with DPC issues. xperf and LatencyMon are better.

Running LatencyMon, it shows the current DPC latency sitting at ~200us with a few random spikes but overall the entire OS is way snappier and right clicking to proc a context menu happens right away now. If LatencyMon detects any spikes over a certain amount it will give you the dummy message saying your rig has issues, even if it really doesn't, you have to keep an eye on the current measured DPC which is the top bar.

Now I get to fire up some games and look for stutter.
post #34 of 35
It seems my analysis has proven right, my mom's laptop had the same exact problem and it was slow as bollocks until i went into Resmon and realized that the disk speed is low BUT queue length went over 128!
Ayase Eli
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Ayase Eli
(21 items)
 
  
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Intel E5-2675 V3 ASUS X99-A/USB3.1 Sapphire R9 290X ref Corsair Vengeance LPX 2400MHz C14 
Hard DriveHard DriveHard DriveCooling
Zotac SSD Premium 480GB OCZ Vector 180 480GB Hitachi 7K3000 3TB 7200rpm Barrow 250mm Glass 
CoolingCoolingCoolingCooling
EK Supremacy MX EK-D5 X-TOP Rev.2 + Swiftech D5 Aquacomputer R9 290X "Bitspower EML" fittings 
CoolingCoolingMonitorKeyboard
Magicool 360 Ultra Magicool 240 Slim Dell U2713HM CM Storm MECH 
PowerCaseMouseMouse Pad
FSP Aurum PT 1200 Phanteks Enthoo Pro Logitech G502 Tesoro Aegis X3 Virtus.Pro 
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Audio Technica M50X 
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post #35 of 35
Thread Starter 
Yeah! Funny thing is my first instinct was to blame a slow hard drive, because it was producing the same exact behavior a thrashing drive does! This had me looking at google chrome caching, spyware, background processes running, but all the resmon showed me was a perfect running system. I've been stumped for over a month until today. Thanks to everyone for all the help, and gosh darnit if I didn't learn something. I swear, if I saw one more thread where someone said to disable on board audio I was going to snap.

Cheers!
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