Author Topic: Slow Quick Scan  (Read 12396 times)

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Offline VFN

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Slow Quick Scan
« on: October 10, 2012, 04:53:27 PM »
Quick Scan seems slow. Nothing else was open during scan.

28 minutes

53863/36836 file/folders

78.5 GB

It seems to stay on 9% for a long time and I'd say close to 20 minutes of the scan was devoted to only the first 20%.

I've got several gigs of Rar files if that's an issue.

Speed Up scanning is ticked, Store Data is not in Settings.

Vista 64x

Thanks

Offline Pondus

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Re: Slow Quick Scan
« Reply #1 on: October 10, 2012, 06:50:37 PM »
have you changed any of the default scan settings?


like this
Quote
I've got several gigs of Rar files if that's an issue.
see screenshot #8
http://www.softpedia.com/progScreenshots/Avast-Home-Edition-Screenshot-6474.html
« Last Edit: October 10, 2012, 06:52:48 PM by Pondus »

Offline VFN

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Re: Slow Quick Scan
« Reply #2 on: October 10, 2012, 07:06:54 PM »
No default settings have been changed.

Scanned again and it took 22 minutes. About 2 minutes unitl 7% scanned, About 4 minutes at 9% but at points during 9% my cursor became somewhat unresponsive. Only at 8 minutes in did my scanning go to 60 mb per second and averaged about that much til the end. Closing the Avast! window after the scan was lagged and starting my browser was very lagged too.
« Last Edit: October 10, 2012, 07:40:06 PM by VFN »

Offline DavidR

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Re: Slow Quick Scan
« Reply #3 on: October 10, 2012, 07:41:24 PM »
Then the RAR's (archives) shouldn't be scanned.

When you talk of the:
Quote from: VFN
Speed Up scanning is ticked, Store Data is not in Settings.

The Store data about scanned files in the persistent cache option is there, see image (click to expand).

This option is in the Quick Scan, Settings, Performance, was that where you were looking.

I have the Quick Scan priority set to High (I believe the default is Normal), to help speed also.
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Offline VFN

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Re: Slow Quick Scan
« Reply #4 on: October 10, 2012, 07:57:10 PM »
I have "Speed up scanning by using persistent cache" checked but not "Store data about scanned files in the persistent cache" like you do in the your attached image. So I should have both checked? I changed "Scan priority" to high now. I'll scan again now and see if it's faster.

Offline CraigB

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Re: Slow Quick Scan
« Reply #5 on: October 10, 2012, 08:02:19 PM »
Yep check both boxes, can do the same in the full scan settings too if you like.

Offline VFN

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Re: Slow Quick Scan
« Reply #6 on: October 10, 2012, 08:29:30 PM »
With the priority set to high a new scan took 26 minutes, longer than the one before. Will check the Store data box and try again.

Offline VFN

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Re: Slow Quick Scan
« Reply #7 on: October 10, 2012, 09:10:28 PM »
With  both boxes checked, 28 minutes. However, at some point around the 52% mark, my mouse stopped responding, Avast window stopped responding, for at least 2 minutes, then, boom, all of the sudden the scan window say's it finished. Also, during the 9% mark my mouse becomes almost completely unresponsive, the Avast window, while the timer moves, the tab buttons are not responsive and icons and such on my computer become unresponsive. So something is not right.

Offline DavidR

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Re: Slow Quick Scan
« Reply #8 on: October 10, 2012, 09:14:03 PM »
I have "Speed up scanning by using persistent cache" checked but not "Store data about scanned files in the persistent cache" like you do in the your attached image. So I should have both checked? I changed "Scan priority" to high now. I'll scan again now and see if it's faster.

It certainly won't be faster first time as it will be storing that information in the persistent cache, so it may actually take a little longer (perhaps not based on the High priority). After a few scans you should start to see the benefit of those changes.
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Offline VFN

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Re: Slow Quick Scan
« Reply #9 on: October 10, 2012, 09:29:59 PM »
Okay. Will try another scan at see.

Offline VFN

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Re: Slow Quick Scan
« Reply #10 on: October 10, 2012, 10:05:39 PM »
28 minutes again.

13 minutes on 9% during which my mouse, taskbar, Avast window is unresponsive at times.

Maybe it's my system, maybe Avast, but somethings not working properly.

Offline DavidR

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Re: Slow Quick Scan
« Reply #11 on: October 10, 2012, 11:19:36 PM »
What is your system spec, Operating System, CPU, RAM ?

Do you have any other security based software installed (firewall, anti-spyware, etc.) ?
Windows 10 Home 64bit/ Acer Aspire F15/ Intel Core i5 7200U 2.5GHz, 8GB DDR4 memory, 256GB SSD, 1TB HDD/ avast! free 21.3.2459 (build 21.3.6164.561) UI 1.0.609/ Firefox, uBlock Origin, uMatrix/ MailWasher Pro/ Avast! Mobile Security

Offline Nesivos

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Re: Slow Quick Scan
« Reply #12 on: October 10, 2012, 11:20:55 PM »
1. What is you computer's processor?  Please be as precise as possible

2. What % of the CPU does avast  use during the san?

3.  What % of the total CPU is used during the scan?

4.  Are you running any real-time anti-spy software like SAS

5.  How much RAM does your computer have?

6.  When was the last time your C: drive was defragged?

OS: W7-SP1, Security: AIS 7, SAS Pro, WinPatrol Plus Network:2 Dell 570MT x64 1 Dell 660 Desktop with 8GB RAM Default Browser & Email: Firefox & Thunderbird latest Betas

Offline Nesivos

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Re: Slow Quick Scan
« Reply #13 on: October 10, 2012, 11:22:12 PM »
What is your system spec, Operating System, CPU, RAM ?

Do you have any other security based software installed (firewall, anti-spyware, etc.) ?

Dang you beat me too it. :)  I knew I should have checked when the message said a another post had been made etc

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Offline VFN

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Re: Slow Quick Scan
« Reply #14 on: October 11, 2012, 12:15:22 AM »
Vista Home Premium 64x
CPU Sempron LE-1300
Memory 2GB DDR SDRAM 800MHZ-2X1GB DIM M
Microsoft Firewall
Malwarebytes Free (scan ability only)
Last Defrag: today

CPU usage during scan fluctuates between 5 and 30 percent with infrequent quick spikes to 40-60, one to 80.

Memory usage is rather flat for most of scan at about 450-500MB. However, during 10 minutes or so at 9% scanned I saw at least a 30 second sustained spike of 1.73GB (during which the computer seemed to freeze/become unresponsive) and a few 5-10 second spikes of 1.3GB.