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Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: roger-s on December 30, 2015, 02:51:45 PM

Title: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on December 30, 2015, 02:51:45 PM
On my Quad core/Win XP PC, avastsvc.exe always takes a minimum of 25% CPU. I now have a three-core CPU...  :o
There are no scans running, no other programs loaded, no activity what so ever. Still Avast takes 25%. Why? Why? Why?
Any ideas? Should I re-install Avast? Un-install and try something different?
I'm tired of my CPU fan running at high speed all the time. Not to mention that the PC is noticeably slower at times and occasionally "freezes" when other programs try to make heavy use of the CPU (roughly when using more than 75%).
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: boukehengst on December 30, 2015, 03:13:55 PM
My Win XP PC has exactly the same problem. Disabling all shields and rebooting the PC does not help.

UPDATE 1:
After I disabled all shields and the automatic update and rebooted the PC (for the 2nd time), the problem was solved.
The problem returned after enabling the file system shield, so this seems to be problem.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Eddy on December 30, 2015, 03:46:47 PM
On a side note :
Quote
I now have a three-core CPU
If you mean a Phenom 710, it is a quad core but only 3 work by default unless you change the ACC setting in the bios ;)

What exact OS/SP ?
What exact version of avast ?
Any other security (related) software installed ? (or was there)
Are all cpu cores used or just one ?
Already performed a repair of avast ?
Already did a clean installation of avast ?
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 01, 2016, 06:26:47 AM
No I have a Phenom 9550 quad core but can only use 75 % of it's potential performance at the moment

What exact OS/SP: Win XP 32bit SP3
What exact version of avast ? V11.1.2245 Last updated yesterday
Any other security (related) software installed ? (or was there): Used to run Norton Professional AV but have used AVAST problem free for a couple of years now.
Are all cpu cores used or just one ? Load is fairly evenly spread among the cores.
Already performed a repair of avast ? No, except for updates.
Already did a clean installation of avast ? Not yet.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 01, 2016, 06:32:47 AM
Found out how to do repair from another forum post. Testing...
I'll be back (after restart)
Title: Problem remains after repair
Post by: roger-s on January 01, 2016, 06:59:51 AM
Ran repair.
Repair completed successfully.
Restarted PC.
Avast stayed at 2-3% for about a minute, until I loaded the first program.
It's now back at a constant 25%, even after I unload the program (notepad).
Any ideas?
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: DavidR on January 01, 2016, 03:03:27 PM
You say it is constant 25% - is the avast tray icon rotating (it should be) ?
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 04, 2016, 09:20:12 AM
Yes, it is.
While it's using 25% I can sit and watch Tools/Statistics and it shows absolutely no activity...

Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Asyn on January 04, 2016, 09:23:13 AM
Which Avast..? (Free/Pro/IS/Premier)
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 04, 2016, 11:21:34 AM
Free, Version 11.1.2245
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Asyn on January 04, 2016, 11:30:46 AM
First, be sure to get rid of all remnants of your prior installed AV(s)..!!
-> https://www.avast.com/faq.php?article=AVKB11#artTitle

Then:
1. Download Avast Free Antivirus: https://files.avast.com/iavs9x/avast_free_antivirus_setup.exe
2. Follow instructions: https://www.avast.com/uninstall-utility (Run this tool for all prior installed Avast versions..!!)
3. Reinstall Avast with the downloaded installer from point 1.
4. Reboot.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 05, 2016, 11:52:02 AM
Followed the procedure as suggested, ran the relevant removal scripts, removed Avast, re-installed Avast.
It looked good at first, until I ran a smart scan (as suggested). Smart scan ran as it should until it got to "Network Threats". The computer sat on that section for more than two hours without any progress so I stopped it. Afterwards it is back to 25% load again...
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Asyn on January 05, 2016, 11:55:02 AM
Might be a bug, wait for one of the devs and/or submit a ticket: https://support.avast.com/support/tickets/new
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 05, 2016, 02:29:32 PM
Tested some more,
Managed to run it for a few minutes after restart without the 25% issue but after starting a few programs it's back to square 1. One thing I've noticed (probably not related though) is that the file system shield is occasionally working on the same files over and over again. The files concerned are temp files of the web-based AMD RAIDXpert console (I run my disks in a RAID 1 set). I will uninstall or upgrade this software to see if anything changes.
Will also try the devs/ticket.

Cheers
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Asyn on January 05, 2016, 02:56:59 PM
OK, report back.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 17, 2016, 08:50:35 AM
Submitted a ticket. Will see what they say...
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 18, 2016, 12:03:41 PM
Ok..

Lenovo Yoga2Pro with Win10 upgrade & Custom PC Intel I3 with Win8.0

Both after the update to Avast Internet Security 11.1.2245 caused avastsvc.exe to peg cpu usage at 25-32%.

I opened up Task Manager and manually killed the task "Avast! Service (32bit)". Avast then whined it was turned off.
I allowed Avast to restart the avastsvc.exe again. Wah lah! After I restarted my Win10 Yoga "ALL was Well".........
till I opened a program. I opened Chrome and clicked on Avast Passwords and now the CPU usage is 32-52% for
avastsvc.exe. Desktop is the same.

Anyone have any ideas.. I use Avast on five devices and don't want to reinstall any of them. They all worked before the
update.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 18, 2016, 01:07:02 PM
After some Avast! trial and error I see now this problem only happens after the "Main Password"
is entered. If you cancel that then everything works like it should I believe.

However, Avast Passwords cannot work without logging in with the "Main Password".

This kind of defeats the purpose of having an account linked between devices does it not?
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 20, 2016, 07:14:16 AM
Does anyone else see this same behavior?

Are the Devs checking the link between the "Main Password" and the CPU throttling?
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 20, 2016, 09:43:21 AM
Still no response to my ticket #144937, so anybody's guess I suppose.

Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: bob3160 on January 21, 2016, 02:35:14 PM
Still no response to my ticket #144937, so anybody's guess I suppose.
Reply can take up to 10 business days. Patience. :)
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 23, 2016, 08:44:27 PM
hopefully we will have a response in 4 more days...
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on January 28, 2016, 08:10:07 AM
11 days and counting...
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 28, 2016, 10:48:31 AM
Has anyone gone to AVAST's Facebook page and read all the visitor posts? What is going on over there?

https://www.facebook.com/avast.usa/
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Arnold72 on January 28, 2016, 11:37:20 AM
One of my personal dictums in regard to computing is if a program is installed which is detrimental to the health of the computer then simply remove it.

The problem is the sheer impossibility of testing on every pc config there is and unfortunately it seems you are one of the unlucky ones who,s config was not thoroughly tested.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 28, 2016, 11:32:24 PM
Thanks for the input. However, the issue seems to be more wide spread than a few unlucky ones. If you google issues like this there are hundreds, dare I say thousands. Something must have went terribly wrong in DEVland when the new update was made or they bumped it through Beta too quick to get it on the market. I have seen that happen too many times with a growing company.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: DavidR on January 28, 2016, 11:43:35 PM
Thanks for the input. However, the issue seems to be more wide spread than a few unlucky ones. If you google issues like this there are hundreds, dare I say thousands. Something must have went terribly wrong in DEVland when the new update was made or they bumped it through Beta too quick to get it on the market. I have seen that happen too many times with a growing company.

You have to bear in mind when using google search is the actual date it occurred as unless it is recent then they will refer to earlier versions of avast. Whilst you could delimit the search by date to get a better idea of those reporting the problem.

Not to mention what OS and system resources, plus what applications are actually installed as the permutations must be huge also.

So it isn't quite so clear cut as to how many google hits you get.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 29, 2016, 02:14:14 AM
Your right.. Its not.

But something that is worrisome is that a large portion of your Facebook customer posts are very disturbing. They
range from being auto-charged long after uninstall to complete loss of data resulting from following steps given by
your tech support to fix issues related to Avast installs or uninstalls. Some cannot even get a hold of tech support
at all and are told to submit another ticket.

What do you say about those?
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: DavidR on January 29, 2016, 04:08:13 PM
Well shall we stay on-topic rather than take off in another direction.

I'm an avast user like yourself and have been for almost twelve years, yes people experience problems; those that don't rarely take to the forums to say that they haven't experienced any problems.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 29, 2016, 09:01:30 PM
Simply discussing that there is some problem here..

We have to twiddle our thumbs while we wait for some kind of reply..
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: DavidR on January 29, 2016, 10:11:48 PM
Simply discussing that there is some problem here..

We have to twiddle our thumbs while we wait for some kind of reply..

Nothing to stop you creating a new topic on other issues, but adding it to unrelated topics, just makes them more confused.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: ak_inshok on January 30, 2016, 01:13:41 AM
So back to the point of the OP...

roger-s, how is that ticket coming along?
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on February 02, 2016, 03:00:46 PM
 :(
No luck yet, now "being processed" since more than 16 days...

Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: bob3160 on February 02, 2016, 03:29:23 PM
:(
No luck yet, now "being processed" since more than 16 days...
Reported to Avast.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on February 04, 2016, 10:43:44 AM
Got a reply asking if this issue was still current. I answered: Yes!
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Asyn on February 04, 2016, 11:30:33 AM
Got a reply asking if this issue was still current. I answered: Yes!
Did you update to the latest version (2016.11.1.2253): https://forum.avast.com/index.php?topic=182468.0
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on February 10, 2016, 01:38:36 PM
Got reply a few days ago. They asked me to run "avastclear" then re-install (again). I did so and at first it seemed okay, but after I started a couple of programs and closed them again it's back at 25% minimum CPU load. Updated my ticket accordingly, will see what happens.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on February 16, 2016, 01:14:44 PM
I have on request submitted a system report to Avast support. My case has now been referred to another "level".
They have asked me to:

You have installed Malwarebytes.
We do not recommend you to use more than one security application on one computer. This may cause a lot of conflict.
Can you try uninstall Malwarebytes and then restart your PC, please.

Also I would recommend you run the Boot-time scan in Avast, by following these steps:
a) Open Avast by double clicking on the orange "a" ball in the task bar.
b) Update virus definitions in the ‘SETTINGS – Update’ section
c) Click SCAN  and then Scan for viruses.
d) From the drop down menu choose ‘Boot-time scan’ and click ‘Start’.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: bob3160 on February 16, 2016, 01:26:36 PM
I have on request submitted a system report to Avast support. My case has now been referred to another "level".
They have asked me to:

You have installed Malwarebytes.
We do not recommend you to use more than one security application on one computer. This may cause a lot of conflict.
Can you try uninstall Malwarebytes and then restart your PC, please.

Also I would recommend you run the Boot-time scan in Avast, by following these steps:
a) Open Avast by double clicking on the orange "a" ball in the task bar.
b) Update virus definitions in the ‘SETTINGS – Update’ section
c) Click SCAN  and then Scan for viruses.
d) From the drop down menu choose ‘Boot-time scan’ and click ‘Start’.
I personally have often complained that since the release of version 2, Malwarebytes uses a lot of resources.
On my system, it isn't Avast but MB that's hungry:
(http://screencast-o-matic.com/screenshots/u/Lh/1455625277591-9699.png)
When I first start the system, It's Malwarebytes that's hogging my HD activity
and for a pretty long period of time. Hopefully there'll be an answer every one can live with.
I'm currently toying with the idea of turning off the resident part of Malwarebytes and going back to doing my scan's manually.
 
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: Arnold72 on February 24, 2016, 04:03:14 PM
I have on request submitted a system report to Avast support. My case has now been referred to another "level".
They have asked me to:

You have installed Malwarebytes.
We do not recommend you to use more than one security application on one computer. This may cause a lot of conflict.
Can you try uninstall Malwarebytes and then restart your PC, please.

Also I would recommend you run the Boot-time scan in Avast, by following these steps:
a) Open Avast by double clicking on the orange "a" ball in the task bar.
b) Update virus definitions in the ‘SETTINGS – Update’ section
c) Click SCAN  and then Scan for viruses.
d) From the drop down menu choose ‘Boot-time scan’ and click ‘Start’.
I personally have often complained that since the release of version 2, Malwarebytes uses a lot of resources.
On my system, it isn't Avast but MB that's hungry:
(http://screencast-o-matic.com/screenshots/u/Lh/1455625277591-9699.png)
When I first start the system, It's Malwarebytes that's hogging my HD activity
and for a pretty long period of time. Hopefully there'll be an answer every one can live with.
I'm currently toying with the idea of turning off the resident part of Malwarebytes and going back to doing my scan's manually.
Absolute nonsense.Upon fresh reading of this very forum it would appear that many of the issues with avast which should of been addressed months ago have still not been fixed and no clear indication by avast staff that they will be fixed.Incidentally how on earth can malwarebytes be compared to avast when they are clearly 2 different products with differing security offered.
Question for you though..?
Why are you using 2 resident programs together and why use them indiscriminately.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: CraigB on February 24, 2016, 04:22:17 PM
Question for you though..?
Why are you using 2 resident programs together and why use them indiscriminately.
Malwarebytes isn't an AV and has been built to run alongside/compliment anti-virus programs, Malwarebytes will also give preference to an AV program in the case of a detection to eliminate discrepancies.
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: roger-s on February 27, 2016, 02:30:13 PM
Followed a couple of red herrings suggested by Avast support. (uninstall "Malwarebytes" among other things)
Performed a Boot scan (as suggested). This found a couple of Java viruses that were promptly removed. (don't know why they weren't detected earlier).
The first couple of times I subsequently restarted the PC, it was still at 25%. Then yesterday when I was preparing to follow their next suggestion (try latest beta version of Avast) I found it was down to 0% again! And it is still at 0% today.
Yipee! Not sure what actually fixed it in the end but all is well again. Could be a combination of Avast updates and getting rid of those pesky little viruses!?


See below link for more detail:
https://support.avast.com/support/tickets/144937
Title: Re: Avastsvc.exe always at 25% CPU, even when not running anything else!
Post by: bob3160 on February 27, 2016, 02:45:04 PM
Glad your problem is solved.
The link to the support ticket may work for you, it doesn't work for us. :)