Reasons why: Anti-virus scan

D

Davmswan

First just want to say that I'm not trying to avoid a reinstall I would just
like to narrow down the problem(s) before I do so.

I just spent 15 hrs 14 minutes doing a virus scan for 200347 files. That is
an extraordinary amount of time for a scan like this. And it is not the first
time (every time actually-I just happen to stop it most times around 9 hrs)
that the scan takes such a long time.
I have the same virus scanner on my laptop and it normaly takes around 3 hrs
to scan 795497 files.

Can anyone list the possible reasons why an anti-virus scan would be running
slow or any suggestions on what to do? PC will sometimes feel sluggish (when
not scanning of course) when opening programs/internet tabs (IE7 with no
hotbars) and will also hang (nonresponsive) sometimes.

AVG (Free) 8.0.237 on both the PC and laptop
Both report no infections.
Using Eusing free registry cleaner on both as well

Other than installling:
AVG-8.0.237
Eusing-v2.0 build 20081022
CPU-Z-0.3.2
GPU-Z-1.50
Driver Sweeper-1.5.5

and reinstalling:
Catalyst Control Center-9.2

I haven't installed anything other than what came on the PC from manufacture:
Nero7 Essentials
Creative Console Launcher-2.60.29 for the sound card
CyberLink PowerDVD
Intel matrix Storage Console
Windows search
and the normal Accessories/Games

with Windows Search on startup (that's it).

Links to other threads about this PC.

http://www.microsoft.com/windowsxp/...1c50&mid=406cdf10-35f8-4348-b9be-5361ecccba81

and

http://www.microsoft.com/windowsxp/...c72c&mid=3741a05f-db84-488e-94e9-08d40467c72c
 
D

Daave

Davmswan said:
First just want to say that I'm not trying to avoid a reinstall I
would just
like to narrow down the problem(s) before I do so.

As a learning exercise, it's not a bad thing to do if you have the time.
That being said, since you obtained this PC second-hand, the wise thing
to do is to perform a clean install. But if you want to narrow down
problems beforehand as a learning exercise, go for it.
I just spent 15 hrs 14 minutes doing a virus scan for 200347 files.
That is
an extraordinary amount of time for a scan like this.
Agreed!

And it is not the first
time (every time actually-I just happen to stop it most times around 9
hrs)
that the scan takes such a long time.
I have the same virus scanner on my laptop and it normaly takes around
3 hrs
to scan 795497 files.

Can anyone list the possible reasons why an anti-virus scan would be
running
slow or any suggestions on what to do?

That's easy. It could be any one of the following:

1. Could be a faulty hardware component. Remember, I'm listing general
reasons. I'm not saying that this is your particular situation.

2. Could be malware. Malware very often wreaks havoc with performance,
including scans. This is *very* likely!

3. Could be that you neglected to delete all your temp files first.
Without doing this important step first, your scan will include these
files. Keep in mind, though, that this cause alone wouldn't account for
a 15-hour scan!

4. Could be that your hard drive's access mode shifted from the faster
DMA mode to the *much* slower PIO mode becuase of access errors.
PC will sometimes feel sluggish (when
not scanning of course) when opening programs/internet tabs (IE7 with
no
hotbars) and will also hang (nonresponsive) sometimes.

AVG (Free) 8.0.237 on both the PC and laptop
Both report no infections.
Using Eusing free registry cleaner on both as well

It's unfortunate you used a registry cleaner because many times their
use actually *decreases* performance. And sometimes they might even
cause a situation where your PC won't even boot! For more info:

http://aumha.net/viewtopic.php?t=28099
Other than installling:
AVG-8.0.237
Eusing-v2.0 build 20081022

Don't install any registry cleaners!
CPU-Z-0.3.2
GPU-Z-1.50
Driver Sweeper-1.5.5

and reinstalling:
Catalyst Control Center-9.2

Instead of installing the entire Control Center, you may want to
consider installing the standalone graphics driver.
I haven't installed anything other than what came on the PC from
manufacture:
Nero7 Essentials
Creative Console Launcher-2.60.29 for the sound card
CyberLink PowerDVD
Intel matrix Storage Console
Windows search

Windows Search has been known to bring PCs to a crawl. I wouldn't use
it. If you want that functionality, Agent Ransack is much better:

http://www.mythicsoft.com/agentransack/

and the normal Accessories/Games

with Windows Search on startup (that's it).

Again, I'd avoid that!
Links to other threads about this PC.

http://www.microsoft.com/windowsxp/...1c50&mid=406cdf10-35f8-4348-b9be-5361ecccba81

and

http://www.microsoft.com/windowsxp/...c72c&mid=3741a05f-db84-488e-94e9-08d40467c72c


--
XP(32) SP3 - Intel D975XBX x6800 @ 2.93GHz (2CPUs) - 2Gb DDR2 -
VisionTek
ATI Radeon HD 4850 (512Mb) x2 - CCC 9.2 - SB X-Fi Audio
Any thing else need to be added?

When performing your clean install, make sure there are no peripherals
connected at the time. Just your mouse, keyboard, and moitor.

Regarding sluggishness in general, here are its usual causes:

1. Malicious software (malware)

2. Certain programs that are designed to combat malware (e.g., Norton
and McAfee). Ironically, they can slow things down because they simply
use way too many resources. Sometime they cause conflicts with other
programs. And their default mode is to scan your entire hard drive each
time you boot up.

3. Too many of *certain types* of programs always running in the
background -- with or without your knowledge.

Use these sites to determine what these programs are and to learn how to
configure them not to always run at startup:

http://www.pacs-portal.co.uk/startup_content.php#THE_PROGRAMS
http://www.bleepingcomputer.com/startups/
http://www.answersthatwork.com/Tasklist_pages/tasklist.htm

Sometimes it is recommended to use msconfig to configure the programs to
not run at startup. A better, more thorough program is Autoruns:

http://technet.microsoft.com/en-us/sysinternals/bb963902.aspx

4. Not enough RAM, which causes the PC to overly rely on the pagefile. A
quick way to determine if this is happening is to open Task Manager
(Ctrl+Alt+Del) and click the Performance tab. Then note the three values
under Commit Charge (K): in the lower left-hand corner: Total, Limit,
and Peak.

The Total figure represents the amount of memory you are using at that
very moment. The Peak figure represents the highest amount of memory you
used since last bootup. If both these figures are below the value of
Physical Memory (K) Total, then you probably have plenty of RAM.
Otherwise, you may want to explore this further by running Page File
Monitor for Windows XP:

http://www.dougknox.com/xp/utils/xp_pagefilemon.htm

5. You might also want to check that your hard drive's access mode
didn't change from DMA to PIO:

http://www.technize.com/2007/08/02/is-your-hard-disk-cddvd-drives-too-slow-while-copying/

and

http://users.bigpond.net.au/ninjaduck/itserviceduck/udma_fix/
 
H

HeyBub

Davmswan said:
First just want to say that I'm not trying to avoid a reinstall I
would just like to narrow down the problem(s) before I do so.

I just spent 15 hrs 14 minutes doing a virus scan for 200347 files.
That is an extraordinary amount of time for a scan like this. And it
is not the first time (every time actually-I just happen to stop it
most times around 9 hrs) that the scan takes such a long time.
I have the same virus scanner on my laptop and it normaly takes
around 3 hrs to scan 795497 files.

Can anyone list the possible reasons why an anti-virus scan would be
running slow or any suggestions on what to do? PC will sometimes feel
sluggish (when not scanning of course) when opening programs/internet
tabs (IE7 with no hotbars) and will also hang (nonresponsive)
sometimes.

The hard-drive on your desktop machine has five times the data as your
laptop. While the number of files is a factor, the SIZE of those files also
matters.
 
P

PA Bear [MS MVP]

Pick one or more:

AVG's configured differently on each machine.

The AVG engine versions aren't the same on each machine.

You upgraded from AVG v7.5 to v8.0 on Machine A but did a clean install on
Machine B.

There are Norton and/or McAfee "leftovers" on Machine A but not on Machine
B.

You have more than one AV app installed & loading at boot on Machine A but
not on Machine B.

The files being scanned on Machine A are different than those on
Machine B.

Machine A needs to be defragged and Machine B doesn't.

Machine A is loaded with TIF & TEMP files and Machine B isn't.

Machine A's Registry has been more horked by the Eusing that that of Machine
B's.

More background processes were running during the scan on Machine A than
Machine B.

Machine A is infected with hijackware that AVG cannot detect and Machine B
isn't.
 
T

Twayne

Daave said:
As a learning exercise, it's not a bad thing to do if you have the
time. That being said, since you obtained this PC second-hand, the
wise thing to do is to perform a clean install. But if you want to
narrow down problems beforehand as a learning exercise, go for it.

....

It's unfortunate you used a registry cleaner because many times their
use actually *decreases* performance. And sometimes they might even
cause a situation where your PC won't even boot! For more info:

LOL, that's being innovative! First time I've heard of registry
cleaners supposedly DECREASING performance! You've posted a lot of
nonsense, but that's the best one yet!
Actually, this one doesn't sound much like it's related to the
registry anyway, but if the OP used one, as long as it was from a
reliable source, it was perfectly fine to do. Worst case it'd make no
discernible difference and best case it could eliminate one or more 20
Second delays in the registry. But you're aware of that.

And that link's useless as tits on a boar hog, long and tedious, OLD,
and useless w/r to anything beneficial to the OPs situation. UmHuh just
isn't that useful in this case as happens in several other cases too,
although there are some excellent papers written by some excellent
people. I particularly enjoy Russ's articles and a few others.
Don't install any registry cleaners!

Correction: Install only reputable, reliable known registry cleaners,
as with any other software one might download and use. Same rules
apply.
Instead of installing the entire Control Center, you may want to
consider installing the standalone graphics driver.


Windows Search has been known to bring PCs to a crawl. I wouldn't use
it. If you want that functionality, Agent Ransack is much better:

Actually, IF a person takes a few minutes to RTFM and learn about
windows search, it can be used to quite an advantage. But I suppose
you're one of those who figure a computer program should never have to
"learn" anything, right?
Rather than a dismissive attitude you're so good at, it would have
been a lot better to discuss WHY windows search seems slow at first, and
how to decide whether to allow the continuation or temporarily pause the
indexing, etc. etc. etc. of windows search. Like anything else you
don't understand, you simply choose to ignore it.
Yes, it can slow a machine down. At first. And then it will speed
it up. Checki tout.

Again, it's a mmv situation and what YOU would do is irrelevant as the
price of tea in China. I doubt many care what YOU would do.
When performing your clean install, make sure there are no peripherals
connected at the time. Just your mouse, keyboard, and moitor.

Regarding sluggishness in general, here are its usual causes:

1. Malicious software (malware)

2. Certain programs that are designed to combat malware (e.g., Norton
and McAfee). Ironically, they can slow things down because they simply
use way too many resources.

That used to be possible: if the machine is not using a faster cpu and
doesn't have the right amount of RAM and the user doesn't know how to or
doesn't bother to, set it up for his own methods of usage of his
machine. Except for GoBack, which I once used temporarily for a few
months, there is no need for Norton (and likely McAfee too) to slow down
a machine other than user inability to get their head around it or, as
in some cases, intentional ignorance. And you've never looked at their
most recent Symantec/Norton offering have you? YOu're so behind the
times it's pathetic.

Sometime they cause conflicts with other
programs.

No, sometimes there ARE conflicts with other programs. The ONLY one I
am aware of at the moment is a conflict between ZoneAlarm and Norton's
firewall. I think there are one or two other such issues too but I
can't recall them right now. But if you've installed, say, the latest
NIS, there is no need for ZoneAlarm. You should never run two firewalls
reliably anyway.

And their default mode is to scan your entire hard drive
each time you boot up.

That is blatantly and completely WRONG. If it was EVER true, it had to
be in the pre-win95 days because it hasn't been defaulted to do that
EVER AFAIK. And I've used nearly every revision they ever published.
3. Too many of *certain types* of programs always running in the
background -- with or without your knowledge.

Wrong again. Whether they run or not is completely programmable. If
you're referring to abstract thigns like support programs and services,
you must really hate Windows. Either way though, each and every such
program/service is completely visible and unlike windows, Norton has
controls to determine whether those things happen or not.
Use these sites to determine what these programs are and to learn how
to configure them not to always run at startup:

http://www.pacs-portal.co.uk/startup_content.php#THE_PROGRAMS
http://www.bleepingcomputer.com/startups/
http://www.answersthatwork.com/Tasklist_pages/tasklist.htm

If you spent half the time figureing out what you're talking about as
you do collecting mostly useless links you'd be a lot more intelliegent
person.
Sometimes it is recommended to use msconfig to configure the programs
to not run at startup. A better, more thorough program is Autoruns:

It is NEVER advisable to use msconfig to "configure" programs to not run
at startup. Msconfig is a TOOL and nothing more, for troubleshooting
purposes. For one thing, there are a lot of programs you can tell
msconfig not to start which will start anyway and replace the entry in
msconfig with another, duplicate working entry.
The right way to use msconfig is as a troubleshooting tool and once
such programs are identified, then go to the services or programs
themselves and make the changes there.
http://technet.microsoft.com/en-us/sysinternals/bb963902.aspx

4. Not enough RAM, which causes the PC to overly rely on the
pagefile. A quick way to determine if this is happening is to open
Task Manager (Ctrl+Alt+Del) and click the Performance tab. Then note
the three values under Commit Charge (K): in the lower left-hand
corner: Total, Limit, and Peak.

The Total figure represents the amount of memory you are using at that
very moment. The Peak figure represents the highest amount of memory
you used since last bootup. If both these figures are below the value
of Physical Memory (K) Total, then you probably have plenty of RAM.
Otherwise, you may want to explore this further by running Page File
Monitor for Windows XP:

http://www.dougknox.com/xp/utils/xp_pagefilemon.htm

Actually, since the pagefile size is dynamic, the TaskManager figures
are often useless. It's always best to use something like Doug's or one
of the many other pagefile monitors on the 'net. IMO Systinternals, now
owned by Microsoft, has the best one.

At least you did and often do provide lots of links; that's always a
good idea as long as they're relevent and have the necessary clarity
required.

Cheers,

Twayne
 
D

Davmswan

Thank you so much!
I'll be spending the next few hours reading over your suggestions and
information, as I'd really like to know why this happens.

And thanks again for the links... I have heard for a long time that reg
cleaners were bad as they could potentially delete needed entrys.
Time to start becomming more aware of whats in the Registry and whats needed.
 
A

Anthony Buckland

Davmswan said:
First just want to say that I'm not trying to avoid a reinstall I would
just
like to narrow down the problem(s) before I do so.

I just spent 15 hrs 14 minutes doing a virus scan for 200347 files. That
is
an extraordinary amount of time for a scan like this. And it is not the
first
time (every time actually-I just happen to stop it most times around 9
hrs)
that the scan takes such a long time.
I have the same virus scanner on my laptop and it normaly takes around 3
hrs
to scan 795497 files.

Can anyone list the possible reasons why an anti-virus scan would be
running
slow or any suggestions on what to do? ...

In my case, I found the big time-consumer was a large
number of big .CAB files. My AV extracts everything
from each CAB and checks each item. Since ordinary
extraction of anything from a CAB causes the AV to
scan that item anyway, I gave it a list of all the big
CABs and told it not to check them. This reduced a
horribly long scan to a manageable one.

Depending on your system and your AV, this may
all be irrelevant in your case. Or not.
 
D

Daave

You're welcome and good luck.

Davmswan said:
Thank you so much!
I'll be spending the next few hours reading over your suggestions and
information, as I'd really like to know why this happens.

And thanks again for the links... I have heard for a long time that
reg
cleaners were bad as they could potentially delete needed entrys.
Time to start becomming more aware of whats in the Registry and whats
needed.

--
XP(32) SP3 - Intel D975XBX x6800 @ 2.93GHz (2CPUs) - 2Gb DDR2 -
VisionTek
ATI Radeon HD 4850 (512Mb) x2 - CCC 9.2 - SB X-Fi Audio
Any thing else need to be added?
 

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