DPC Latency problems HELP

Toggle sidebar Toggle sidebar
A

Apstone

Honorable
Oct 30, 2013
49
0
10,530
Here is the LatencyMon conclusion.:
CONCLUSION
_________________________________________________________________________________________________________
Your system appears to be having trouble handling real-time audio and other tasks. You are likely to experience buffer underruns appearing as drop outs, clicks or pops. One problem may be related to power management, disable CPU throttling settings in Control Panel and BIOS setup. Check for BIOS updates.
LatencyMon has been analyzing your system for 0:04:51 (h:mm:ss) on all processors.


_________________________________________________________________________________________________________
SYSTEM INFORMATION
_________________________________________________________________________________________________________
Computer name: MY-PC
OS version: Windows 7 Service Pack 1, 6.1, build: 7601 (x64)
Hardware: M17xR3, Alienware
CPU: GenuineIntel Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz
Logical processors: 8
Processor groups: 1
RAM: 6091 MB total


_________________________________________________________________________________________________________
CPU SPEED
_________________________________________________________________________________________________________
Reported CPU speed: 1993.0 MHz
Measured CPU speed: 186.0 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.

WARNING: the CPU speed that was measured is only a fraction of the CPU speed reported. Your CPUs may be throttled back due to variable speed settings and thermal issues. It is suggested that you run a utility which reports your actual CPU frequency and temperature.



_________________________________________________________________________________________________________
MEASURED INTERRUPT TO USER PROCESS LATENCIES
_________________________________________________________________________________________________________
The interrupt to process latency reflects the measured interval that a usermode process needed to respond to a hardware request from the moment the interrupt service routine started execution. This includes the scheduling and execution of a DPC routine, the signaling of an event and the waking up of a usermode thread from an idle wait state in response to that event.

Highest measured interrupt to process latency (µs): 9275.567781
Average measured interrupt to process latency (µs): 8.549293

Highest measured interrupt to DPC latency (µs): 917.900079
Average measured interrupt to DPC latency (µs): 2.590022


_________________________________________________________________________________________________________
REPORTED ISRs
_________________________________________________________________________________________________________
Interrupt service routines are routines installed by the OS and device drivers that execute in response to a hardware interrupt signal.

Highest ISR routine execution time (µs): 195.040140
Driver with highest ISR routine execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation

Highest reported total ISR routine time (%): 0.032633
Driver with highest ISR total time: ACPI.sys - ACPI Driver for NT, Microsoft Corporation

Total time spent in ISRs (%) 0.104230

ISR count (execution time <250 µs): 588753
ISR count (execution time 250-500 µs): 0
ISR count (execution time 500-999 µs): 0
ISR count (execution time 1000-1999 µs): 0
ISR count (execution time 2000-3999 µs): 0
ISR count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
REPORTED DPCs
_________________________________________________________________________________________________________
DPC routines are part of the interrupt servicing dispatch mechanism and disable the possibility for a process to utilize the CPU while it is interrupted until the DPC has finished execution.

Highest DPC routine execution time (µs): 942.272955
Driver with highest DPC routine execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation

Highest reported total DPC routine time (%): 0.072055
Driver with highest DPC total execution time: ndis.sys - NDIS 6.20 driver, Microsoft Corporation

Total time spent in DPCs (%) 0.376848

DPC count (execution time <250 µs): 1980469
DPC count (execution time 250-500 µs): 0
DPC count (execution time 500-999 µs): 2874
DPC count (execution time 1000-1999 µs): 0
DPC count (execution time 2000-3999 µs): 0
DPC count (execution time >=4000 µs): 0


_________________________________________________________________________________________________________
REPORTED HARD PAGEFAULTS
_________________________________________________________________________________________________________
Hard pagefaults are events that get triggered by making use of virtual memory that is not resident in RAM but backed by a memory mapped file on disk. The process of resolving the hard pagefault requires reading in the memory from disk while the process is interrupted and blocked from execution.

NOTE: some processes were hit by hard pagefaults. If these were programs producing audio, they are likely to interrupt the audio stream resulting in dropouts, clicks and pops. Check the Processes tab to see which programs were hit.

Process with highest pagefault count: chrome.exe

Total number of hard pagefaults 568
Hard pagefault count of hardest hit process: 234
Highest hard pagefault resolution time (µs): 512912.129453
Total time spent in hard pagefaults (%): 0.327350
Number of processes hit: 13


_________________________________________________________________________________________________________
PER CPU DATA
_________________________________________________________________________________________________________
CPU 0 Interrupt cycle time (s): 17.046232
CPU 0 ISR highest execution time (µs): 195.040140
CPU 0 ISR total execution time (s): 2.427035
CPU 0 ISR count: 588753
CPU 0 DPC highest execution time (µs): 942.272955
CPU 0 DPC total execution time (s): 7.926982
CPU 0 DPC count: 1868776
_________________________________________________________________________________________________________
CPU 1 Interrupt cycle time (s): 5.584379
CPU 1 ISR highest execution time (µs): 0.0
CPU 1 ISR total execution time (s): 0.0
CPU 1 ISR count: 0
CPU 1 DPC highest execution time (µs): 228.707476
CPU 1 DPC total execution time (s): 0.059689
CPU 1 DPC count: 6666
_________________________________________________________________________________________________________
CPU 2 Interrupt cycle time (s): 5.080636
CPU 2 ISR highest execution time (µs): 0.0
CPU 2 ISR total execution time (s): 0.0
CPU 2 ISR count: 0
CPU 2 DPC highest execution time (µs): 259.105369
CPU 2 DPC total execution time (s): 0.123438
CPU 2 DPC count: 18181
_________________________________________________________________________________________________________
CPU 3 Interrupt cycle time (s): 5.223186
CPU 3 ISR highest execution time (µs): 0.0
CPU 3 ISR total execution time (s): 0.0
CPU 3 ISR count: 0
CPU 3 DPC highest execution time (µs): 196.204215
CPU 3 DPC total execution time (s): 0.048474
CPU 3 DPC count: 6538
_________________________________________________________________________________________________________
CPU 4 Interrupt cycle time (s): 5.322995
CPU 4 ISR highest execution time (µs): 0.0
CPU 4 ISR total execution time (s): 0.0
CPU 4 ISR count: 0
CPU 4 DPC highest execution time (µs): 198.004516
CPU 4 DPC total execution time (s): 0.316854
CPU 4 DPC count: 39151
_________________________________________________________________________________________________________
CPU 5 Interrupt cycle time (s): 5.478076
CPU 5 ISR highest execution time (µs): 0.0
CPU 5 ISR total execution time (s): 0.0
CPU 5 ISR count: 0
CPU 5 DPC highest execution time (µs): 196.257903
CPU 5 DPC total execution time (s): 0.045955
CPU 5 DPC count: 5309
_________________________________________________________________________________________________________
CPU 6 Interrupt cycle time (s): 3.848901
CPU 6 ISR highest execution time (µs): 0.0
CPU 6 ISR total execution time (s): 0.0
CPU 6 ISR count: 0
CPU 6 DPC highest execution time (µs): 415.591069
CPU 6 DPC total execution time (s): 0.136447
CPU 6 DPC count: 18746
_________________________________________________________________________________________________________
CPU 7 Interrupt cycle time (s): 5.171154
CPU 7 ISR highest execution time (µs): 0.0
CPU 7 ISR total execution time (s): 0.0
CPU 7 ISR count: 0
CPU 7 DPC highest execution time (µs): 290.281987
CPU 7 DPC total execution time (s): 0.117179
CPU 7 DPC count: 19976
 
Solution
P


This has nothing to do with DPC latency, 9ms is pretty typical for random hard disk...
Sort by date Sort by votes
rishiswaz

rishiswaz

Honorable
Mar 10, 2012
564
0
11,060
I suggest you rebuild your page file, if it is on an SSD make sure you are not defragmenting, if it is a mechanical drive defragment, you might even need to format and reinstall Windows. If all else fails get a RMA, you might have something wrong with your RAM which is causing so many requests to go to the page file. Also try re applying your thermal paste, the CPU frequency seems really low as per what it should be, if you are not comfortable changing the thermal paste I suggest you either take it to a computer repair shop or ask someone else who is more experienced to re apply it for you.
 
Upvote 0 Downvote
A

Apstone

Honorable
Oct 30, 2013
49
0
10,530

It is indeed mechanical, what is an RMA?

 
Upvote 0 Downvote
A

Apstone

Honorable
Oct 30, 2013
49
0
10,530


Ok so I am a hardcore game nerd, and when playing World of Warcraft, I will be getting about 200fps if I let it go uncapped, but as soon as I go into heavier content that is alot more taxing, I will go to about 10fps at lowest settings.. This should not happen with this computer honestly.. I used to have problems with very high dpc latency from USB but I have fixed that, now it seems that hardpage faulting or whatever is becoming terrible. I get jerky performance on the internet and when I turn on a live stream while dpc checker is up, the page faulting is horrid. I have cleaned all fans and everything.
 
Upvote 0 Downvote
P

Pinhedd

Champion
Aug 7, 2007
10,342
20
56,965


This has nothing to do with DPC latency, 9ms is pretty typical for random hard disk access. The problem is that you don't have nearly enough physical memory. You have too many programs competing for memory and your operating system is ejecting the infrequently used parts to the hard drive to make room for programs that need it right then and now (such as decompressing and buffering HD video).

There are only two solutions to resolving hard page faults: Either install more memory to reduce contention for a scarce resource, or run fewer programs that have real-time constraints at once.

I have an M17x R3 myself (I'm using it right now :D) and I have 16GiB (4x4GiB) of Kingston HyperX Genesis DDR3-1600 in here. It works great. If you have about $200 to invest, it would probably help quite a bit.
 
Upvote 0 Downvote
Solution
A

Apstone

Honorable
Oct 30, 2013
49
0
10,530


 
Upvote 0 Downvote
A

Apstone

Honorable
Oct 30, 2013
49
0
10,530


 
Upvote 0 Downvote
P

Pinhedd

Champion
Aug 7, 2007
10,342
20
56,965


The second set of SODIMM slots are located underneath the keyboard. They're a bit harder to access as the keyboard cover needs to be removed and the keyboard itself needs to be unscrewed.

I believe that these are the modules that I purchased. I purchased two sets, each with 2 SODIMMs:

http://www.ncix.com/detail/kingston-hyperx-8gb-2x4gb-kits-ee-67277.htm

There are certainly other offerings on the market now, but when I purchased them several years ago they were the only ones available. Newer revisions don't seem to have the nice metal shroud and are branded HyperX Genesis (mine are just HyperX)

This 16GiB set can fit in just the bottom two slots

http://www.newegg.com/Product/Product.aspx?Item=N82E16820104317
 
Upvote 0 Downvote
A

Apstone

Honorable
Oct 30, 2013
49
0
10,530


So you really think this will really help my issue? I sit at 70% physical memory doing nothing really..

 
Upvote 0 Downvote
P

Pinhedd

Champion
Aug 7, 2007
10,342
20
56,965


What do you mean by "I sit at 70% physical memory doing nothing really"? Do you mean that when you are not doing anything in particular, 70% of your memory is committed to applications, or do you mean that when you are performing normal tasks 70% of your memory is unused?
 
Upvote 0 Downvote
rishiswaz

rishiswaz

Honorable
Mar 10, 2012
564
0
11,060
I assumed he meant that he was using 70% of his memory, that means that he probably also has a lot of background processes running at startup that he isn't using and probably a lot of alienware bloatware.
 
Upvote 0 Downvote
A

Apstone

Honorable
Oct 30, 2013
49
0
10,530


Could you tell me more about this alienware bloatware? Im curious. Also, cleaned out the computers hardware and that helped keep temps down a TON.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom