Network usage causes high DPC Latency

By any chance are people in this thread using Threatfire or PC Tools products?


I shutdown Spyware Doctor w\ Anti-virus and now am able to download with uTorrent, browse and serve media, all at the same time (like I used to before recently) with no ill effects.
After reading a few threads over in that forum, it seems ThreatFire is causing issues.

It might not be specifically Spyware Doctor, as I immediately saw latency after installing and running Avast anti-virus.

Just thought I would bring this up as this is getting to be a real annoying issue.

Holy Moses said:

By any chance are people in this thread using Threatfire or PC Tools products?


I shutdown Spyware Doctor w\ Anti-virus and now am able to download with uTorrent, browse and serve media, all at the same time (like I used to before recently) with no ill effects.
After reading a few threads over in that forum, it seems ThreatFire is causing issues.

It might not be specifically Spyware Doctor, as I immediately saw latency after installing and running Avast anti-virus.

Just thought I would bring this up as this is getting to be a real annoying issue.

dont know what spyware doctor or threatfire is. never used them. As I said the problems existed (for me atleast) even before installing Avira AntiVir.

Since restarting Base Filtering Engine service (Windows firewall & IPSEC) clears the problem temporarily, I suspect it's a problem with the NIC driver and Windows firewall.

Well, my threory............ was just that.

Disabling my AV (threatfire and spyware doctor), merely delayed the inevitable it seems.
I woke up this morning and my PC was frozen. I had to hard reboot it.

If I leave P2P programs closed, I can go a few days without a reboot, though I generally shut the laptop down when I can.

The thing I don't get, is I have had the same setup on my Win 7 PC for over a year now, without ever having latency issues like this, using P2P or not.
Now, if I turn on uTorrent, I have to restart the PC every two hours or so, or it will lock up because of the latency.

I will try the Base Filtering Engine restart though....thanks for that.


EDIT: I get errors trying to restart the Base Filtering Engine. The process takes so long to even come up with an error that it is quicker for me to just reboot the PC.

Have not had the problem for a couple of weeks now. Only thing that's changed are some Windows updates.

I had the problem until yesterday, it even got worse until then.
Yesterday, I de-installed the firewall (PC-Tools) and replaced it with the COMODO firewall (before I tried the Microsoft Windows 7, Outpost, and ZoneAlarm, all of them I could not use for several reasons. I did not check the DPC latency with these firewalls).

My configuration now runs for almost 1 day and the latancy is always green. With the old config, I'd had it permanently above 16ms (meaning: a solid red plane).

I will post again when the red spikes come back...

Now running for 5 days, bittorent and all .. except red spike. No more DPC latency since I use the other firewall.

Bye bye

eross said:

Have not had the problem for a couple of weeks now. Only thing that's changed are some Windows updates.

Same here. All latency has disappeared. Only thing I changed recently was Windows updates and getting "readyboost" to work. Using 8GB cache on my laptop. Pretty sure it was the updates though.

Didn't change a damn thing other than those two things, in fact I have barely been home and every night my RSS downloader does it's thing, and I have had my PC running for about a week, seeding all torrents to proper ratio.

Kinda shocked but happy at the same time.

The same thing for me. I noticed today I haven't rebooted a long time, look at uptime - 5 days! And torrent and IPTV don't freeze my system. But I haven't deleted any system software (I run Kaspersky Internet Security). The last updates for windows were 16.12.2010 and it's described as security fixes.

wow i've been dealing with this for about 6 months as well! ever since I gota whole new top of the line awesome computer. and it ended up being ever so frustrating.
i am currently installing the newest windows update which i'd put off and my fingers are crossed!