Malwarebyte 3.1.2 scan takes very long

[sysopa]

Hello,
Malwarebyte 3.1.2 scan takes very long
Why does a scan in MWB 3.1.2 takes four times as long than with 3.0.6.
After installing 3.1.2 (same hardware, same software) the scan time increased enormous.
With 3.0.6  it took a bit over 8 min. to scan 404.622 objects
With 3.1.2  it takes a bit over 24 min. to scan 405.008 objects
Sysopa

[dcollins]

Are you running a manual scan or a scheduled scan? And if it's a manual scan, what is the priority setting under Settings -> Application?

[sysopa]

Both are scheduled scans

Settings: Manual scans have high priority and will finish more quickly

[dcollins]

We did free up more resources during a scheduled scan, so scans may in fact take longer

[Phone Man]

My scheduled scans are close in time to the lower priority of the manual scan.

Also the CPU usage is lower on both those scans.

Lower priority manual and scheduled scans hits max of 30% CPU and Higher priority hits 90%.

Jim 

[sysopa]

But three times longer ??

The memory scan takes a couple of min.

And it also scans the ProgammData/ Malwarebytes folder for several min.

[dcollins]

Yeah, we actually reduced the resources we take by 3 times, so taking 3 times as long to scan lines up pretty well. We do run comparative tests for our new scans versus our old scans, and this looks similar to what we saw in a lot of our scenarios. You could confirm this by running a manual scan and comparing it to the time it took to run a manual scan in 3.0.6. The numbers should be pretty equivalent

[Phone Man]

Here are my scan results on my W10 desktop. All scans had every thing checked. 371,000 items.

Ver 3.0.6.1469  Scheduled Scan 2:53 min CPU hit 95%

Ver 3.1.0.1716 Scheduled Scan 9:40 min CPU hit 30%

Ver 3.1.0.1716 Manual Scan Low Priority 9:16 min CPU hit 30%

Ver 3.1.0.1716 Manual Scan High Priority 3:46 min CPU hit 95%

Jim 

[sysopa]

The times of scheduled 3.0.6 and manual 3.1.2 (high) are almost equal.

The three times longer on scheduled 3.1.2 scan would be OK if MB don't slow down other programs

[Firefox]

5 minutes ago, sysopa said:

The times of scheduled 3.0.6 and manual 3.1.2 (high) are almost equal.

The three times longer on scheduled 3.1.2 scan would be OK if MB don't slow down other programs

In both versions were you scanning archive files as well as rootkit scan? Check those settings...

[dcollins]

18 minutes ago, sysopa said:

The times of scheduled 3.0.6 and manual 3.1.2 (high) are almost equal.

The three times longer on scheduled 3.1.2 scan would be OK if MB don't slow down other programs

We greatly reduced the resources we use in 3.1.2 for scheduled scans, so it shouldn't be slowing your computer down nearly as much as in older versions. 

[Porthos]

Can't catch a break here. The scan times decrease (wanted feature) because more system resources (CPU) are used to create fast scans. People complain about the CPU use. Now when it is reduced people complain again because scan takes longer.

 

[John A]

I much prefer auto scans using less system resources.  I don't care how long they take.

[daman1]

I have no problem whatsoever with scans taking a little bit longer, I'm just glad to have some CPU back.