NOD32 : perceivable slowdown while surfin'

[Imothep]

Hi,

Haven't you noticed a perceivable slowdown when surfing on the Net with NOD32 v2 ???

NB : I use Firefox 1.0

[-z3r0-]

I have noticed a little nit of slowdown when surfing but I think its because of the real time scan actually scanning things before you get to view them and I think thats a good thing if thats why.

[Imothep]

-{ Quote: "I have noticed a little nit of slowdown when surfing but I think its because of the real time scan actually scanning things before you get to view them and I think thats a good thing if thats why." }-

I totally agree with you :)

I followed the "Extra settings for Nod32" and unfortunately on my machine the slowdown is really perceivable.

I would like to know if other users (NOD32 v2) are in the same situation.

[Stan999]

-{ Quote: "I totally agree with you :)

I followed the "Extra settings for Nod32" and unfortunately on my machine the slowdown is really perceivable.

I would like to know if other users (NOD32 v2) are in the same situation." }-

I don't have any detectable slowdown on a P4 2.8 game machine I use with NOD and all settings marked on AMON and IMON.

You may be having a conflict with another program and NOD?

[Atangel]

No.

Broadband connection, P4 2.4 GHz, 512MB RAM, NOD32 tweaked to high across the board, netgeat router, Firefox 1.0, Sygate Personal Firewall Pro.

Maybe it's always been slow and I haven't noticed it getting any slower? ??? :D

[Imothep]

Hi,

FireFox 1.0-ThunderBird 1.0, broadband connection 512/128, Athlon XP 1.5 Ghz, 256 Mo DDR, Win 2000 Pro.

Here is my current security configuration :

- Look 'n' Stop 2.05
- Spyblocker 8.0
- Pest Patrol 2005

Any known incompatibilities ?

NB : I mention that in the near future I intend to add ProcessGuard 3.1 and Spyware Guard.

Thanks for your feedback :)

[NAMOR]

I haven't noticed any slowdown either... Is it possible that it is Spyblocker that is causing it? Since it is trying to filter out garbage from web pages... Just a shot in the dark.

[Notok]

I haven't noticed an actual slowdown, but there have been times that it's SEEMED slower because of how it scans everything and then sends it to your browser.. so you'll get more of a delay before you see the pics, etc, but then it all displays at once.

[NAMOR]

So maybe it's a combination of Spyblocker and NOD's http scanner that is causing the slow down on his machine... Who get's the web page first Spyblocker or NOD32?

[redwolfe_98]

i noticed a significant slowdown while surfing the internet when i first installed NOD32, but rebooting cleared up the problem..

i don't notice any slowdown in websurfing with nod32 (and i do have all of the settings maxed out)..

yes, some pages take some time to load while imon is monitoring the download, but that is on rare occasions, and it doesn't bother me..

[profhsg]

I too noticed some lag in displaying pages with lots of graphics when using my browser in higher efficiency mode. As an experiment you ought to try switching your browser to "higher compatability" in the IMON/HTTP/Setup area and see if it makes a difference. I have noticed that doing that did speed things up for me, but the lag wasn't bad enough to make me want to forego the extra security that the higher efficiency setting gives me.

[Imothep]

Hi,

I have used other AV softwares before (with the same security configuration) and I have never encountered such problems while surfing.

profhsg : I agree with you. I do not want to forego th extra protection but the slowdown is really perceivable :-[

[Stan999]

-{ Quote: "Hi,

I have used other AV softwares before (with the same security configuration) and I have never encountered such problems while surfing." }-

A lot of folks choose NOD over some of the other AVs because it doesn't impact performance. That is the reason I use NOD on a game machine.

It may be that when you were removing some of the other AVs you have used that they didn't uninstall completely and causing a conflict with NOD?

[Imothep]

Hi Stan999,

I don't think so.

All my applications are uninstalled with "Total Uninstall" plus "JV16 Power Tools".

This package is surely the best one if you want to have proper uninstallations.

[Stan999]

-{ Quote: "Hi Stan999,

I don't think so.

All my applications are uninstalled with "Total Uninstall" plus "JV16 Power Tools".

This package is surely the best one if you want to have proper uninstallations." }-

If you check the CPU usage with the Windows Task Manager Processes tab does it show anything running too high except for the System Idle Process?

If you disable IMON does that help with surfing?

[Imothep]

Hi Stan999,

Nothing runs too high.

For instance in my Task Manager:

Firefox : 61 220 Ko (with 2 tabs)
Pest Patrol : 13 372 Ko
SpyBlocker : 8 884 Ko
Nod32krn : 6 904 Ko

When switching to the "High Compatibility" mode (FireFox and SpyBlocker), there is a slight improvement but it is not blatant at all :-[

Any idea ?

[Stan999]

If you disable IMON does that help?

[Imothep]

-{ Quote: "If you disable IMON does that help?" }-

Definetely yes !!!

When disabling IMON everything is OK but as you can easily guess, I do not want to forego my extra protection.

I am a little bit disappointed :-[

[Stan999]

-{ Quote: "Definetely yes !!!

When disabling IMON everything is OK but as you can easily guess, I do not want to forego my extra protection.

I am a little bit disappointed :-[" }-

If you disable both Pest Patrol and SpyBlocker then enable IMON does that help?

[Imothep]

Hi Stan999,

No unfortunately.

When switching to "Higher Compatibility" mode (for Firefox and SpyBlocker), there is an improvement (although slight) but it is better than nothing. I would say it is passable.

But the only way to restore the normal connection speed is to disable IMON.

Don't you think it is a bug of NOD32 v2 ?

Thanks for your help :)

[Stan999]

-{ Quote: "Hi Stan999,

No unfortunately.

When switching to "Higher Compatibility" mode (for Firefox and SpyBlocker), there is an improvement (although slight) but it is better than nothing. I would say it is passable.

But the only way to restore the normal connection speed is to disable IMON.

Don't you think it is a bug of NOD32 v2 ?

Thanks for your help :)" }-

Hi Imothep,

I don't have any slowdown using IMON and the HTTP scanner on a P4 2.8 machine with a cable connection. I even tested it on a old PIII 500 machine
with no slowdown.

No sure what may be causing the issue on your platform?

Are you using a proxy connection?

[Imothep]

Hi Stan999,

My problem only focuses on surf speed.

It is really maddening because NOD32 is a great program and according to many competent reviewers it is certainly one of the best AV program ever designed (light on the ressources, extremely fast, state of the art technology).

My opinion is that it would be useless to run it (ie : IMON/Higher Compatibility) without taking advantage of its outstanding features.

NB : I forgot to mention that I use a host file with SpyBlocker which is rather big. Hope this helps :-\

[ronjor]

I would turn off real time scanning of every other program and see if that helps.
There is some sort of conflict somewhere.

Do you have any other antivirus programs on your computer? What antivirus program did you use before using NOD and is it entirely removed from your system?

[Stan999]

-{ Quote: "Hi Stan999,

My problem only focuses on surf speed.

NB : I forgot to mention that I use a host file with SpyBlocker which is rather big. Hope this helps

" }-

Hi Imothep,

That is what I am referring to also. I don't detect any noticable difference with the IMON HTTP scanner enabled or disabled when surfing with either a P4 2.8 machine or the P3 500 machine and a 3Mb download speed cable connection.

As a test I even uploaded 10 1MB jpg files to a website and checked the time it took to download and fully display the page with the picture files and clearing the browser cache each time. I didn't see any detectable time difference with the IMON HTTP scanner enabled or disabled.

I wouldn't think your large HOSTS file would cause any problem. You could always rename it to check and then rename it back.

The only other thing I can think of is that you might try to completey uninstall SpyBlocker to check that.

If uninstalling SpyBlocker doesn't make any difference perhaps some other folks here can offer some suggestions.

[Gauthreau]

Run a few speed tests with IMON on/off and post the results here.

I don't notice any difference with it on or off on my AMD XP-M 2200. I've run speed tests with IMON on and off. I did notice a total system lag with NAV 2005.


Neil

[Imothep]

Hi all,

First of all, I have uninstalled SpyBlocker and restored the host file in its original condition. There's an improvement but it is not blatant.

Next I ran this speed test : Speed Test Link (http://www.bandwidthplace.com/speedtest/)

I have an ADSL connection ( 512/128 ), so for the test I have selected "ADSL" then "Europe".

Here are the results :

IMON ON ("Higher Efficiency")

Communications : 486.6 kilobits per second
Storage : 59.4 kilobytes per second
1MB file download : 17.2 seconds
Subjective rating : Not bad


IMON OFF

Communications : 494.4 kilobits per second
Storage : 60.4 kilobytes per second
1MB file download : 17 seconds
Subjective rating : Not bad

But unfortunately that does not solve my problem : when disabling IMON, everything is OK, when enabling IMON, there is a noticeable lag....

It drives me crazy !!!!!!!!! >:( :'( :'(


NB : In IMON ===> HTTP ===> Configuration, I have :
Mozilla/4.0 firefox.exe ("Higher Efficiency")
Mozilla/5.0 firefox.exe ("Higher Efficiency")

I do not know why ??????? ( I have only one copy of Firefox installed on my machine !)

[Sweetie(*)(*)]

Hi ive just done this test with the networking feature of taskmanager open, the test was only using on average 15% of the available bandwith i have, so the results are far from accurate.

In my personal expiernce Nod32 is the fastest AV on the market, i notice no lag in internet activity or PC speed at all.

[Blackspear]

Hi Imothep, I have sent an email to Eset asking for further assistance with this matter.

Cheers ;D

[Stan999]

-{ Quote: "NB : In IMON ===> HTTP ===> Configuration, I have :
Mozilla/4.0 firefox.exe ("Higher Efficiency")
Mozilla/5.0 firefox.exe ("Higher Efficiency")

I do not know why ??????? ( I have only one copy of Firefox installed on my machine !)" }-

Just for a test if you use IE instead of Firefox to surf do you see the same slow down with the IMON HTTP scanner enabled as compaired to when you disable it?

[Gauthreau]

-{ Quote: " Here are the results :

IMON ON ("Higher Efficiency")

Communications : 486.6 kilobits per second
Storage : 59.4 kilobytes per second
1MB file download : 17.2 seconds
Subjective rating : Not bad


IMON OFF

Communications : 494.4 kilobits per second
Storage : 60.4 kilobytes per second
1MB file download : 17 seconds
Subjective rating : Not bad" }-


I don't understand how you are noticing a .2 second lag and a 1 kb difference.

Neil

[Imothep]

BlackSpear,

It is very kind of you. Thanks :)

Sweetie,

Could you point me to a link where I could perform a reliable speed test ?


Stan999,

I have switched to IE and there's no difference.


Gauthreau,

I just can't understand why !!! very uncanny ??? ???

[Gauthreau]

Is the slow down that you are talking about more of a 'slow to display' problem, rather than an actual internet download problem? I ask because your speed tests look virtually the same. Do you notice particular times of day/night when things slow down? How about when you are running NOD and running graphics intensive applications like gaming or photo editing?

Neil

[WSFuser]

@imothep - there are various sites and tools for measuring network/internet bandwidth. i know cnet.com and mcafee.com have internet speedometers. the task manager in winxp also lets u view network traffic. dumeter is a utility for monitoring traffic. and btw have u tried repairing network configuration. IMON > setup > miscellaneous

[Gauthreau]

Also, have you tried emptying your internet cache - IE and FF?

Neil

[Bandicoot]

Hello Imothep,

Just so you and everyone else knows, Eset support dudes are monitoring this thread. Didn't want anybody to think we didn't care..... of course we care. ;D But you've received so many really useful ideas and help from all of the other contributors, there isn't much I or my colleagues here can add at the moment.

I also use Firefox and have had no noticeable slow down issues. I've tried IE and Opera also with again no side effects. I haven't seen any other issues come in to support@eset.com about this recently. Obviously, there will be very slight slow down because IMON is doing his job, but personally, the slow down is hardly noticeable.

Bandicoot. :-\

[Imothep]

Hi all,

Gauthreau,

Yes it is a "slow to display" problem rather than a internet download issue. When disabling IMON, everything is ok : pages (even bloated pages, ie: images and so on) load instantaneously.
I tried to empty cache, I have also uninstalled all my other security softwares (Pest Patrol, Spyblocker even my firewall), the problem remains the same. :'(

WSFuser,

I have repaired network configuration but it has not solved anything :'(

Bandicoot,

I do not know if it is linked to my problem but today I have noticed that IMON did not start. I tried to invoke it manually but it did not run : I had to stop it and reboot my computer to solve the problem. I am going to make another thread about it.

Anyway, I would like to thank you all for your valuable advices and I hope I do not bother you ;)

[Blackspear]

-{ Quote: "I do not know if it is linked to my problem but today I have noticed that IMON did not start. I tried to invoke it manually but it did not run : I had to stop it and reboot my computer to solve the problem." }- Can you please download and run belarc advisor from here (http://www.belarc.com/free_download.html) and post the log in this thread. MAKE SURE that you edit out your Windows XP Reg Key BEFORE posting.

Can you also download and run “Hijack This” found here (http://www.wilderssecurity.com/showthread.php?t=12516) and post your log in this thread.


-{ Quote: "I am going to make another thread about it." }-As this is the part of the same issue, can you please continue posting in this thread.


-{ Quote: "Anyway, I would like to thank you all for your valuable advices and I hope I do not bother you ;)" }-It’s our pleasure and it also is no bother at all, we will get you sorted out, there is yet to be a system that I cannot get Nod32 running smoothly on ;) ;D

Cheers ;D

[WSFuser]

@imothep - have u tried using cfos or cfosspeed as an adsl modem driver? it seems a bit irrelevant, but maybe it could help.

[Mack Jones]

Sorry guys, on my box, I don't see any slowdown.


maybe it's due to USB connection...

[Imothep]

Hi,

First of all, sorry for my belated reply.

I have uninstalled and reinstalled NOD32 and everything is OK now !

I would like to thank you all for your valuable help ;) ;) ;)

[ronjor]

Imothep

Good news! :)

[Blackspear]

-{ Quote: "Hi,

First of all, sorry for my belated reply.

I have uninstalled and reinstalled NOD32 and everything is OK now !

I would like to thank you all for your valuable help ;) ;) ;)" }-Really great to see ;D

Thank you for keeping us up to date.

Cheers ;D

[JimF]

I have a cable modem that gives me 5 Mbps (the rated speed from my ISP) on two of my PCs without NOD32 (including a wireless laptop). But with NOD32 on a clean install of WinXP SP2, I get only 3 Mbps tops from the following site:
http://www.computers4sure.com//speed.asp

When I turn off IMON, there is not much improvement; when I stop the NOD32 Kernal Service entirely, the speed increases to about 4 Mbps tops.
However, ftp downloads still work at the full 5 Mbps speed, so it may be just an HTTP artifact from this test site. It is not exactly a hardship situation of course, but my ISP is upgrading my speed to 7 Mbps next month and I would not like to lose a big part of it if possible.

Any ideas? I have not yet tried uninstalling NOD entirely on this PC, but that is the next step.

[Stan999]

-{ Quote: "I have a cable modem that gives me 5 Mbps (the rated speed from my ISP) on two of my PCs without NOD32 (including a wireless laptop). But with NOD32 on a clean install of WinXP SP2, I get only 3 Mbps tops from the following site:
http://www.computers4sure.com//speed.asp

" }-

What speeds do you get from this test site on that machine?

http://web100.rit.edu:7123/

[NAMOR]

try here too...
http://www.dslreports.com/stest

[JimF]

-{ Quote: "What speeds do you get from this test site on that machine?

http://web100.rit.edu:7123/" }-
TCP/Web100 Network Diagnostic Tool v5.3.3a
running 10s outbound test (client to server) . . . . . 761.13Kb/s
running 10s inbound test (server to client) . . . . . . 4.99Mb/s

It looks like this one is unaffected by NOD.

[JimF]

-{ Quote: "try here too...
http://www.dslreports.com/stest" }-
From the NJ test site (I am in PA):

2005-01-21 14:46:42 EST: 4719 / 727
Your download speed : 4832495 bps, or 4719 kbps.
A 589.9 KB/sec transfer rate.
Your upload speed : 744558 bps, or 727 kbps.

That is fine too. It looks like only the link I posted is affected by NOD, for some reason. Thanks for the input; it is probably not worth bothering with further.