Intrigued by the DPC latencies

Hello

I noticed that in my Vista 32 bit, I have strangely high DPC latencies
(something is often read in DPC latency Checker 1000us)
My system seems however works smoothly (games and everything). I disabled
all unecesarry drivers, but
'problem' remains (even in an emergency mode).

Xperf indicates the maximum duration of use of the processor of the CPD
Ntkrnlpa.exe - 69us
NDIS - 67us
Usbport.sys - 40us
nvmimx32.sys - 40us
nvlddmkm.sys - 30us
Storport.sys - 30us
Tcpip.sys - 26us
nvstor.sys - 19us
NetBT - 15us
hdAudBus.sys - 14us
NETIO.sys - 13
and so on.

If I have summarized all these latencies max is not 1000us on DCP latency
Checker.
Games, music video is fine without glitches, but strange is Windows Photo
Viewer, I my class presentation dxgkrnlg.sys is 1.3ms max. There is problem
what I have run the presentation for awhile (presentation does not
en_douceur, but the picture of the changes are stuttering) something freaks out and fires
TDR ending with bsod because driver Nvidia can not recover. I do not know
If it's related or not...

Another thing is that my Vista 32 bit is high latency and low latency Vista 64
continuing execution on 40us (as seen in the DPC tester).

Any suspicion or so?

OK, so after a while I have the real answer.

My DPC latency difference was caused by the settings (various in operating systems) energy saving

Windows is the best and the rules.

Tags: Windows

Similar Questions

  • The DPC latency is too high because of the storport.sys file in windows 8.

    I tried reinstalling 3 times all with own re - installs (IE, delete all the content of the reader), but nothing seems to help. This causes serious distortions in periodic with her while playing or watching movies, which is very irritating. I have updated all drivers for the newest drivers possible, there is no security software on the system other than the one that came with windows.

    Any help with this would be appreciated.

    I found the solution - for my laptop (Lenovo model B575 1450, since 2011) individual - based on processors AMD E450 APU and southbridge SB850 chipset SATA/USB/PCI/PCIe.

    I went to the Manager of Windows devices and found AMD driver SATA. It's specific hardware AHCI driver who speaks for the SB850 southbridge and driver chipset Microsoft storport.sys storage system generic interface.

    I rolled back the high driver AMD AHCI IDE, version of April 2014 of AMD Catalyst Drivers 14.04, in the version of April 7, 2010 from AMD Catalyst Drivers 10.04, the CPU and the LAG went away, that the process "Interruptions" happened to consume 80-90% of the base, at 5-8% of a carrot!

  • Oh, the irony? High DPC latency with idle CPU - gives more stable, more low-latency DPC CPU usage 100%

    Just like in the title,

    I tried everything, disabling components, elimination of most of my RAM, update BIOS and loading failsafe and optimized defaults, etc. - and one thing I noticed is that Prime95 running x 64 on all hearts eliminates the peaks high in 1.2.0 DPC latency checker. Audio stuttering, what original research for corrections me, brought me to DPC latency checker.

    It's really strange that the 100% CPU usage would cause the DPC latency stabilize (mine hovers around 350-450 microseconds in the full use of the CPU, but in use slowed parameters or moderate apparently something causes a DPC peak at ~ 4100us max).

    Let me know if you figured it out!

    Model name : GA-EP45-UD3P(rev. 1.6)
    --------------------------
    M/B Rev : 1.6
    BIOS Ver : FE
    Purchase garage : Newegg.com
    -------------------------------------------------------------------------------
    Brand VGA : ATI model : 5770
    Brand CPU : Intel model : Quad 9400 speed : 2.66
    Operating system : Win 7 64 bit SP :
    Brand memory : G.SKILL Type : DDRII
    Memory size : 4 GB, speed : 800
    Power supply : Antec Neopower 550 W

    Hi Frankie,

    We understand that you too met the same scenario as this 6 year old thread. Some resolutions are always topical, while others are no longer applicable due to constant updates and corrections in the course of the last years.

    However, to resolve your concern, you can view article utilization of the processor for Windows 7 .

    Let us know how it goes.

  • Since the last update of Windows, I have problems with iastor.sys dpc latencies...

    ... Technology Intel Rapid Storage Technology on my Ideapad Y560

    Has been published since the last Windows Update (happened to autoamtically in the background ) I now have a few latencies.

    It seems to come from the LatencyMon also says iastor.sys driver.

    Tried to install the version the more recent but no luck. STIL have these DPC latencies every few minutes.

    I also see the spike in ProcessExplorer and DPC latency.

    How can I fix it (without breaking my Windows 7)?

    Seems, I solved it, updated Atheroes AR9285 to 10.0.0.75 downloaded from http://www.atheros.cz/atheros-wireless-download.php?chipset=37&system=6

    Lenovo should add these drivers to their download pages ;-)

  • Satellite A500-1DN - high DPC latency resolved

    Hi all!

    All first of all sorry for the bad English!
    I am writing because this problem drove me crazy in the half of the year. I got cracking audio etc. thanks for the high dpc latency time but finally I managed to understand how to clear my A500 these boring of CPD points. I made these:

    1. update of the BIOS (1.90)
    2 use this VGA nVidia Driver: 257.21. Only this one works. I tried every existing. If you have another type of satellite, but a Geforce 230 M GT in there and you have high latency tell him!
    3. use wlan driver atheros version 8002580
    4. use optimzer wlan. Name: wopt021 (disable background scanning and enable streaming mode)
    If you use WiFi, jumping 3. 4.

    Now my A500 works correctly, I am really satisfied with it :)
    I hope that this guide will help all those who have the same problem!

    Good bye

    Hi atibrd,

    I'm happy to hear that you have found a solution to this "problem" but I must say also I never had problems with my Satellite A500 and I put t know what you mean with a DPC latency. I use my Satellite A500 with OS preinstalled Toshiba and the latest version of the BIOS. Everything works fine, even some newer games run great on it.

    In addition, with regard to the nVidia display driver I want to give you a little advice: be careful with 3 third party drivers, even from nVidia. No one from nVidia has tested this driver in particular on the Satellite A500. If the installation goes on your own risk because it doesn t have a protection against overheating.
    That's why I only use the drivers provided on the official website of Toshiba directly. They are tested and working 100% correctly.

    In any case, maybe for some people they have this DPC problem too it s useful. :)

  • S20 Audio stutter / DPC latency... can't fix. Need help!

    Hello world

    I have recently (last week) bought a Lenovo S20 (Xeon W3520 with 6 GB memory upgrade). I mainly

    Use this workstation as a DAW for audio, check / change. Instead of preinstalled Windows XP (32-bit)

    and the Vista Business that comes with the DAW, I installed Windows 7. Everything went very well,

    the system is stable, ThinkVantage drivers are up-to-date. A NVIDIA GeForce 260 is used as graphics card.

    But for applications audio my S20 as it is now, is simply unusable. I hear drop outs/stuttering even with the edge, if I play a mp3 or wav file. I have disabled unnessary devices / background programs, tested with HT on/tested, without Speedstepping and Turbo Mode. No difference. I get a regular DPLC advanced every 15 seconds. And the tips are very high (16 ms). No difference if I plug an EMU 1820 PCI card instead of its edge. Disabling of the on-board LAN has not made a difference either.

    Take a look: screenshot of DPC latency

    No idea how to solve this problem?

    Best,

    dynamitec


  • 6735 s his stuttering, high DPC latency

    6735 s aged 8 months.

    A month ago I started to notice the audio stuttering in video to download websites such as youtube. The problem tends to appear after about an hour of computer use / navigation. Recently, however it has started to affect the mpg and mp3 files played locally on my hard drive. The problem is much worse that a download is in progress (i.e. any download, the media files not only). I ran a DPC latency checker that I found on the web and I found that when I'm browsing or downloading files DPC latency goes through the roof.

    About a week before I first noticed this problem I have updated graphics drivers from ATI (Catalyst v9.8, then recently v9.10), so I think it has something to do with it.

    I tried to disable the WIFI / network cards, bluetooth, USB, CDROM drive, ATI drivers uninstall audio drivers, firewall, antivirus, killing all the processes that are unnecessary in the Manager of tasks etc. Only a reboot will solve the problem (for an hour or two before returning)

    Does anyone else have this problem? It drives me nuts having to restart my computer for all hours.

    Update: turns out the culprit being the ZoneAlarm firewall. I had heard of people having problems with the COMODO firewall, so I tried to uninstall ZoneAlarm and all is well again. Note must be a uninstall complete, just disable or turn off ZoneAlarm was not enough.

    See you soon.

  • Windows Vista, the network latency got bad

    Yesterday, I changed the network router on my Windows Vista (edition Home premium) and this led me to run some of the internet speed test sites.  I see high network latency on the network speed available test sites.  The download speed is very good, but my network on my Windows Vista system latency time increased from 19 ms to about 500 ms.  It is quite a big change (X 25), so I'm a little worried about it.  I don't think that it is a router problem because I also have a Windows XP system that is connected to the router, and he still sees about 19 ms network latency.  Just to be sure, I changed the system of Windows Vista and Windows XP system router ports, and the latency of each system has not changed, so I don't think that it is a router problem.

    I think so the network on Window Vista system stack has been damaged in some way, and I'm looking for help to repair.  My first thought was the restoration of the system, but I can't go far enough to make it useful.  The only system restore point that I currently have (for some reason any) yesterday, and it shows the same 500 ms of latency of the network on the Windows Vista system.
    Can someone help me to troubleshoot or fix this problem?
    Thank you very much.
    -Roger

    Well, one of those moments of "Doh!" ... found another article on the internet, this time, it gives an idea for my system... I was using Chrome 3.0 as my browser when I ran network speed sites that gave me the time of high latency, with that I was worried.  I found that my time of network latency on Vista, as measured by Firefox 3.5.3 is about 19 million, and for IE8 is about 10 MS, which both are very good.  My conclusion therefore is that Chrome 3.0 marked the beginning of a new era of the network latency that is bad for me.  Or maybe it's Eset Nod32, antivirus, it does not matter (when I turned Nod32 which made no difference to the number of Chrome, well off)...

    I had no idea that Chrome 3.0 was this badly inconsistent with everything that he fights with on my computer Vista, but I don't need because I have a couple of other browsers which are very good.

    Interesting, even when...

    -Roger

  • the 10 images 'bought' show after I registered transfer DPC, but how do I see transfers additional image that I was expecting since the DPC transfer?

    the 10 images 'bought' show after I registered transfer DPC, but how do I see transfers additional image that I was expecting since the DPC transfer?

    Hello

    Please contact DPC to check the migration status.  They are not currently appear on your Adobe Stock account.

    Dollar Dollar Photo Club Photo Club - photo galleries free high quality royalty and vectors.

    Thank you

    Bev

  • transfer credits from the DPC and charge $9.99 AND $1.00, why?

    transfer credits from the DPC and charge $9.99 AND $1.00, why?

    Hello

    $1 is the amount of prior authorization.  The transaction didn't is not invoiced to your account and once verified will be deleted.

    Adobe Store | Online order and payment FAQ

    Thank you

    Bev

  • "the high latency of disk" on the performance tab appears

    Is it normal to have absolutely no activity on the upper Desk of the default latency '1 day summary' tab in vCenter performance? I have the latest updates on vCenter and ESXi 4.0.0 running on my hosts. Guests show CPU, disk use, and use of memory... but zip on this disk latency. We use a copula of IBM Nseries 6040 boxes I think (same as Netapp 3040) with NFS (no fibre channel).

    Since NFS is the network file system and not a block, file system you get not disk performance statistics, it is normal.

  • Error when you try to view the application latencies

    I'm not able to get see Planner to latencies report application series of tests with multiple virtual machines in them. If I run a test that has 3-2 VMs in it while I'm able to view the results of the trial very well, however when I try to run tests with more of that I get errors when I try to view the results. When I try to load the web page results to see Planner, nothing happens, and I get the following error in viewplanner.log:

    2012-10-24 20:16:13, 025 INFO {}
    Unhandled error
    Traceback (most recent call changed):
    File "/ usr/lib/python2.6/site-packages/twisted/web/http.py", line 773, requestReceived
    Self.Process)
    File "/ usr/lib/python2.6/site-packages/twisted/web/server.py", line 127, process
    Self.Render (resrc)
    File "/ usr/lib/python2.6/site-packages/twisted/web/server.py", line 147, in rendering
    body = resrc.render (self)
    File "/ usr/lib/python2.6/site-packages/txjsonrpc/web/jsonrpc.py", line 112, rendering
    () defer.maybeDeferred(function,_*args).addErrback
    -< exception that is caught here >-
    File "/ usr/lib/python2.6/site-packages/twisted/internet/defer.py", line 133, in maybeDeferred
    result = f (* args, * kw)
    File "/ tmp/ViewPlanner/web_interface.py", line 527, jsonrpc_getResultsMap
    File "/ tmp/ViewPlanner/mysql_interface.py", line 571, in getTestAverages
    exceptions. KeyError: 0

    When I try to manually execute the python script statement, it tells me that there is no result for the test.

    I just ran a test locally with 276 VMs, according to viewplanner.log, all 276 VMs transferred their results to the device. Yet I still get this error when you try to view the results.

    I tried to create new images GoldenDesktop and GoldenClient, as well as deployed a new device see Planner and reinstalled all of its agent programs, nothing helps. Anyone know what could be the cause?

    We have seen this issue for large series and I attach a patch file that you can overwrite the/root/ViewPlanner harness directory and then restart the vdiappd service, and then you can give it a try.

    For manual results extratcion by using the report.pyc script, you must use '-j' I ' and '-j' operations if you ran just 1 iteration of the workload.

  • What is the network latency acceptable in milliseconds for users on a WAN to come?

    I heard number as 125ms being a number to shoot for VDI and good user experience, but what is the number of the real world?

    Acceptable latency is the right number until all of your users start to complain that this document, http://www.vmware.com/files/pdf/view/VMware-View-5-PCoIP-Network-Optimization-Guide.pdf, said shoot for less than 250 ms.

  • Hi, I'm intrigued by the search engine involved when I type in the navigation bar, it keeps going to a call from Chinese search engine BaiDu. How can I keep being sent to this search engine? It is a desktop machine that has been handed to me.

    I sometimes tend to type my question directly in the web address bar, Marine Diesel D2. And the search results page that appears is at the following address. http://www.Baidu.com/Baidu?TN=dealio_dg & WD = diesel + D2

    Make Google's search when you type keywords:

    Enter about: config in the address bar.

    keyword search. URL

    change the string value of http://google.com/search?q=

  • Satellite U920t. 64 bit Win 8.1 of the dpc switches

    I have a new system with 8.1 Win 64-bit? but during my installations brings something to this problem.
    I never had this problem.

    Who can help me?
    Whenever I have to renew the system, but it does not help.

    Hi markus

    Sorry Matt, but could you give more details to your question and could you describe this problem in detail

    Your message is not very useful, and more details.

Maybe you are looking for

  • How will I know that I have downloaded the Firefox Sync Addons?

    I downloaded Mozilla Firefox on my laptop but I don't know if I've also already downloaded sync Firefox Addons on my laptop?

  • Re: Can not find drivers for Satellite A100-121

    Hello! One of my friends has this laptop model (or another name: PSAA8E) and need to reinstall the operating system. The problem is that it doesn't have the drivers and I can't do them anywhere.I research on the European Union or on the Toshiba site,

  • Questions of T400

    Hey guys. The hinges are loose on my T400 and I am on the last day of my warranty. I was wondering if I would be able to move things (keyboard is steep; left clicker under the touchpad is bordering off... etc fall but the hinges are my priority) on m

  • How torecuperate blocked and remove friends

    How restore a friend blocks and deletes on facebook

  • Cannot set a restore point

    I can not create a restore point on my P7 - 1280t (Win 7) office because he has "been disabled by the administrator".  I'm the only person who uses this computer, and does not know how to resolve this...