Avast WEBforum
Consumer Products => Avast Free Antivirus / Premium Security (legacy Pro Antivirus, Internet Security, Premier) => Topic started by: Heldon on January 16, 2011, 08:16:38 PM
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Hello,
Since today (16/01/2011): I note that AVASTSVC.exe runs with a permanent use of 25% of CPU (instead of less than 1% the other days).
I didn't install new softwares, and my surf is the same as usual.
I think a new version of avast is responseable of this new comportment
Heldon.
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Config : Win XP (SP3) - Core I5/750 - RAM 4Gb - Avast Free 5.1.889
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I have no problem on my XP Pro system.
Are you running XP Home or Pro ???
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Are you running a scheduled scanning?
Any other security program that could interfere?
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No problems here either, when you see this 25% activity, is the avast icon rotating (indicates scanning) ?
If not then usually there could be some conflict with another security application.
What other security software do you have installed, firewall, anti-spyware, etc. ?
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Hello,
I am on XP Home SP3.
No scanning, no other sofware interfers (no more as usual).
It seems some users in the forum have the same pb since the 5.1.889...
I have to test further if it appends only with FireFox or with another browser ...
Regards.
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Well when browsing with firefox or any other browser, the web shield redirects http traffic through its local proxy so that it can be scanned. This process and all other avast shields are controlled by avastSvc.exe (the main scanning engine), so it isn't unusual to see activity on avastSvc.exe whilst browsing.
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Hello,
So, first : I think I'm going first to clean uninstall then re-install 5.1.889 in order to see if it is dur to a bad custominzing.
Regards.
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Hello,
I made several actions, but my problem still remains.
0 - Stop network access
1 - Uninstall 5.1.889 with aswclear5.exe
2 - Reboot
3 - Install 5.1.864
4 - Reboot
5 - Open network access
6 - Open Firefox
7 - AvastSvc.exe run at 25% CPU usage
8 - Close Firefox
9 - Upgrade to 5.1.889
10- Reboot
11- Open Firefox
12- AvastSvc.exe run at 25% CPU usage
13- Close Firefox
14- uninstall Avast 5.1.889 again, reinstall 5.1.864 again
15- reboot.
16- I notice that AvastSvc.exe run at 25% CPU usage but without launching of Firefox or any browser.
--> The activity still remains between 24.6% and 25.3%, for several hours.
I don't know what I can do to stop this activity ? :(
Regards.
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Please download: http://download.sysinternals.com/Files/ProcessExplorer.zip
run as administrator, find "AvastSvc.exe" process (avast! service) and when it'll use 25% CPU, right-click and choose "Create dump -> Full dump". Then compress the dump file and upload it on our ftp, I'll look at it, thanks.
please test only 5.1.889 version, thanks.
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Hello,
As I have already Proces Explorer installed, I'll make the dump file in the evening.
Regards.
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As I have already Proces Explorer installed, I'll make the dump file in the evening.
you must use the latest version, older versions are not able to create dumps
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I was about to start a new thread on this exact topic when I noticed this one was already running.
I too have version 5.1.889 installed on my computers and on most of them it is working fine.
However on one of my laptops after about five minutes Avastsvc.exe starts to use 98% of my cpu resources according to task manager.
The laptop is running XP Home SP3 (all my computers are running either XP Home or Pro SP3) and prior to this version of Avast I have had no problems with Avast on this or any of my computers.
I have tried disconnecting from the internet, disabling all the shields, and even uninstalling and re-installing Avast completely all with same result.
I am not running any browsers or programs apart from the screensaver on this computer.
I have now downloaded the version of ProcessExplorer.Zip which you suggested in the previous post and will try running it and creating a dump file later today.
Any help would be gratefully received as this has effectively disabled this laptop as the only way I can use it is by uninstalling Avast and not connecting to my network.
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I wonder if it is a XP Home problem as I have no problem on my XP Pro system but I do not use Firefox though.
This is with Process Explorer v14.01
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I see there is another thread running on the same subject started by Dragonfly_27z a couple of posts earlier where he was also getting 98% CPU usage which is the same problem I had.
Since I have downloaded and run ProcessExplorer.exe to try to create a memory dump of the problem it seems to have gone away on it's own, which is also what happened to Dragonfly_27z.
If the problem re-occurs I will create the dump requested, but how do I upload the dump to the site ftp?
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If the problem re-occurs I will create the dump requested, but how do I upload the dump to the site ftp?
Using Windows Explorer, drag and drop.
Or using FileZilla, for instance.
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I've got the same problem with 5.1.889 . 97% of CPU usage. When I try to make a dump with Process Explorer (14.01) I get a message : "Error writing dump file. Access is denied." With other processes it's OK.
WinXP Pro SP3.
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I've got the same problem with 5.1.889 . 97% of CPU usage. When I try to make a dump with Process Explorer (14.01) I get a message : "Error writing dump file. Access is denied." With other processes it's OK.
WinXP SP3.
Try disabling avast's self-defense module. Go to settings - troubleshooting - untick enable avast self-defense module
Hope this will help you ;)
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Try disabling avast's self-defense module. Go to settings - troubleshooting - untick enable avast self-defense module
Hope this will help you ;)
When I did this my computer hung up that I needed just reset it. When I run my comp it seems Ok now. Have no idea what that's been. Hope that a malware (if it is) didn't modify avast when I'd disabled self-defense module.
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Please download: http://download.sysinternals.com/Files/ProcessExplorer.zip
run as administrator, find "AvastSvc.exe" process (avast! service) and when it'll use 25% CPU, right-click and choose "Create dump -> Full dump". Then compress the dump file and upload it on our ftp, I'll look at it, thanks.
please test only 5.1.889 version, thanks.
Hello,
I upgraded again in 5.1.889.
During the creation of the dump in Process Explorer 14.01, my system froze --> so I have to wait the rebuilt of my RAID5 cluster.
I would do a test tomorrow evening.
Regards.
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I have no problem on my XP Pro system.
Are you running XP Home or Pro ???
I'm running The new build on a Home XP machine with the process only consuming a fraction of 1%. So probably not a Home XP isolated issue.
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The high CPU usage is back again this morning!
I have tried to create a Dump file from AvastSvc.exe using Process Explorer as suggested but it just says 'Error writing dump file. Access is denied.'
Any ideas on how to get the dump file to write so we can see what is happening?
I am hoping that the usage will die down again after a couple of hours, but I can't use the computer in the meantime.
Will keep you posted (literally).
P.S. If I can get the dump file to work I still don't know where it's supposed to be drag and dropped to in order to send it to the tech guys.
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Did you disable the avast self-defence module as suggested ?
You may have to do this temporarily before the problem occurs as you may not have time to disable it when the problem happens and be able to get the dump rep.
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I'm running The new build on a Home XP machine with the process only consuming a fraction of 1%. So probably not a Home XP isolated issue.
What I did to get a dump when I had a problem on my XP Pro system:
How to invoke memory dump creation?
http://support.avast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=71
It would help if you put that information in your signature as it would help the helpers offer pertinant advice.
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I've done the dump. You can find it here ftp.avast.com/incoming/MEMORY.DMP.FigVam.zip
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I have now disabled the self defense module within Avast and the Process Explorer does not now come up with the error message but it also does not produce the dump file.
It does create the file header for the dump in the correct directory but then it just locks up and cannot be closed.
It can be moved around the screen and minimized but cannot be shut down even within Task Manager.
After a reboot the dump file has a zero size.
The first time I tried it the whole computer locked up and had to be forced off by holding down the power button for ten seconds.
Today the CPU percentage usage has not gone back to normal on its own as it did yesterday so the laptop is now unusable.
Any more suggestions?
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Any more suggestions?
http://msdn.microsoft.com/en-en/library/ff545499.aspx
http://support.microsoft.com/kb/969028
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Sorry but I don't understand why you are posting links to show how to crash my machine manually to create a memory dump.
It would take forever to sort through a gigabyte of dump file to find the information relating to the AvastSvc.exe program.
Surely there must be some way to get Process Explorer or a similar program to create a dump file just for AvastSvc.exe.
Or better still is there an easy way to revert back to an earlier version of the Avast Program which worked OK?
Any sensible suggestions?
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Please download: http://download.sysinternals.com/Files/ProcessExplorer.zip
run as administrator, find "AvastSvc.exe" process (avast! service) and when it'll use 25% CPU, right-click and choose "Create dump -> Full dump". Then compress the dump file and upload it on our ftp, I'll look at it, thanks.
please test only 5.1.889 version, thanks.
Hello,
I upgraded again in 5.1.889.
During the creation of the dump in Process Explorer 14.01, my system froze --> so I have to wait the rebuilt of my RAID5 cluster.
I would do a test tomorrow evening.
Regards.
Hello,
Some news :
- the level of CPU for AvastSvc.exe is at 25%
* Without activity: it happens frequently but not always,
* Under Firefox : always,
- I can't create a complete dump from ProcessExplorer 14.01 -> my system (XP Home) freezes and I have to reboot: >:(
Bye
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I've got exactly the same problem with 5.1.889. As soon as I upgraded to 889, my CPU usage (Avastsvc.exe)jumped to 50%. Went back to 5.1.864 - problem gone - back to zero. Back to 889 again - problem returns. Back to 864 for second time - problem gone. This has to be a bug, folks. Running Windows 7 Pro on a Dell Vostro 1500.
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Can anyone let me have a copy of an earlier version of Avast as I have upgraded all my computers and removed all the old download files before discovering the CPU usage problem?
Or is there anywhere on the avast site I can download an earlier version?
Please advise.
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Can anyone let me have a copy of an earlier version of Avast as I have upgraded all my computers and removed all the old download files before discovering the CPU usage problem?
Or is there anywhere on the avast site I can download an earlier version?
Please advise.
older versions are available here: http://www.filehippo.com/download_avast_antivirus/
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I found ditching the Behavior Shield (first disabled, then uninstalled) to help with AvastSvc CPU% problems. It's worth a shot.
I had problems with the Behavior defense module since the update to 5.1.864/889.
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Since I open this Topic, I can precise some points:
1 - The CPU Usage (for me=25% because I have a core I5/750)for AvastSvc.exe appears at the startup of my system,
2 - This high activity is present even if no other user task is done (no browser, no other user programs...)
3 - I try the 5.1.889 and the 5.1.864 : same result,
4 - I am under XP Home SP3,
5 - The result is the same when self-defense module is activated or not,
6 - The dll that causes this high CPU usage is ashServ.dll (at adress 0x4e50),
7 - Finally : I have succeeded to create a full dump of AvastSvc.exe
--> I'll try to put this dump on the avast ftp (89mb ;) )
--> I think that I am going to downgrade to 5.0.677
Bye
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--> I'll try to put this dump on the avast ftp (89mb ;) )
For TECH : I put the file AvastSvc_Full Dump_from_Heldon.zip on the incoming queue of the avast ftp.
size=47,489,993 Bytes, MD5=14e8de8b8bb022643451765fb20bf1c6
Bye
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I tried installing the previous version 5.1.864 but the result was the same.
Am now trying progressively older versions until I find one that works.
Will post any results, good or bad.
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@Heldon, FigVam:
guys, do you use any Acronis products? Thanks.
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@PK
Not Acronis softwares for me.
Bye
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guys, do you use any Acronis products? Thanks.
Which Acronis product is conflicting pk?
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not conflicting, but FigVam kernel-mode dump shows the request was sent to Acronis device whereas Heldon's user-mode dump sends a request down to kernel to scan boot sector or MBR and I wanted to know if both dumps can hung at the same place...
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Thanks pk.
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@Heldon, FigVam:
guys, do you use any Acronis products? Thanks.
Yes. I do. True Image Home v.2011
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@Heldon, FigVam:
guys, do you use any Acronis products? Thanks.
Yes. I do. True Image Home v.2011
I have True Image Home v.2011 on my XP Pro system with no problem.
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I hope the problem's already been detected
http://forum.avast.com/index.php?topic=69533.msg586405#msg586405
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I hope the problem's already been detected
http://forum.avast.com/index.php?topic=69533.msg586405#msg586405
yes
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After a couple of reboots the previous version 5.1.864 is now working OK on my laptop.
I will wait until Avast technical finds the fault and corrects it before upgrading the program again.
Also I think I will change back to the previous version on all my other computers, even though they seem to be working fine at the moment, the problem could cause any of them to run slowly at random.
My advice to anyone with the CPU usage problem is to go back to version 5.1.864 and restart the computer after installation, even though it does not tell you to.
Thanks for your help guys, it's nice to know your not the only one with a problem, you begin to suspect your own hardware with a fault like this one.
Cheers.
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Well going back to 5.1.864 is a bit over the top considering PK (one of the avast developers) has said that this bug has been found in some of the dump files users have sent him (Reply #38 above) and an update should hopefully be released tomorrow in the virus definitions update.
So unless your increased CPU is making things unworkable I would advise waiting for the update (hopefully tomorrow) to see if it resolves it for your particular system.
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Well going back to 5.1.864 is a bit over the top considering PK (one of the avast developers) has said that this bug has been found in some of the dump files users have sent him (Reply #38 above) and an update should hopefully be released tomorrow in the virus definitions update.
So unless your increased CPU is making things unworkable I would advise waiting for the update (hopefully tomorrow) to see if it resolves it for your particular system.
Hello,
Finally I downgraded to 5.0.677 (and not to 5.1.864 that causes the same symptom of high CPU usage)
Result --> no more CPU high level (less than 1%)
So, I keep this version until a further solution.
Bye.
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Heldon, most probably, the difference between the versions make Behavior Shield the culprit.
Maybe you can, as a workaround, disable it or not install it until next version.
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Well there is also the Acronis issue mentioned in this topic by pk, here, http://forum.avast.com/index.php?topic=69540.msg586216#msg586216 (http://forum.avast.com/index.php?topic=69540.msg586216#msg586216) and that is hoped to be fixed by a virus definitions & engine update tomorrow.
Whilst that should work for those using acronis it may also have a wider affect, given that some dumps pk has received aren't from those using acronis.
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@ DavidR, Tech and PK
As I have no Acronis softwares, and the inactivation of self-defense module has the same effect in 5.1.889 and 5.1.864, I keep 5.0.677.
I suppose the scan of the boot (or the MBR)is a effect of the last versions of Avast.
Regards.
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I suppose the scan of the boot (or the MBR)is a effect of the last versions of Avast.
Boot time scanning (not MBR scanning) on 64bits systems was introduced in 5.1 version. For 32bits, it was there since version 4.
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I suppose the scan of the boot (or the MBR)is a effect of the last versions of Avast.
Boot time scanning (not MBR scanning) on 64bits systems was introduced in 5.1 version. For 32bits, it was there since version 4.
Ok, I note, but I don't understand why 5.0.677 is OK :D
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But I don't understand why 5.0.677 is OK :D
Because in version 5.1 you have Behavior Shield in action and not exactly on version 5.0.
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Does anybody know if the problem's been fixed?
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But I don't understand why 5.0.677 is OK :D
Because in version 5.1 you have Behavior Shield in action and not exactly on version 5.0.
Hello,
Well, but I have the same result when Behavior Shield is stopped...
Bye.
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From my understanding of what PK said this was related to a scan for rootkits rather than the behaviour shield, but I could be wrong in my interpretation.
We have already received some dumps, the problem is with TDL3/4 malware detection. This will be fixed and update will be delivered within virus database update (hopefully soon, maybe tomorrow).
If however, I'm right it would mean that disabling the behaviour shield is unlikely to resolve it (should have been uninstall behaviour shield); but that should have been resolved with an update to the detections on the 22nd Jan 2011. What virus definitions version you you have (latest 110124-1) ?
If you have the latest and that hasn't resolved it try uninstalling the behaviour shield and report progress.
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If you have the latest and that hasn't resolved it try uninstalling the behavior shield and report progress.
I still have 97% on avastsvc process. Stopping behavior shield doesn't make change. (Sure, I have the last definitions)
After rebooting with behavior shield off it seems OK now. Will have a look on it during the day.
2 minutes past - 97% :-(
I'll make a dump in the evening if you need it.
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The dump file may help the developers, the file is likely to be large, zip it to compress. Upload it to ftp://ftp.avast.com/incoming (ftp://ftp.avast.com/incoming) - Using Internet Explorer, Connect to the link and drag the file into the Right pane and drop it, that starts the upload, you don't have read access to this folder. Give the zip file you are uploading a unique name, so they can identify it.
It might not be a bad idea to create a text file (readme.txt) with any relevant information, avast topic URL, user name, etc. etc. in the zip file.
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My dump: ftp.avast.com/incoming/FigVam_MEMORY.DMP.25.01.2011.zip
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OK, hopefully they will find it of use.
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If you have the latest and that hasn't resolved it try uninstalling the behaviour shield and report progress.
Hello,
I have the latest definitions (110126-1) and Behavior shield if desactivated --> Avastsvc.exe run at 25% (for my config).
You wrote to uninstall the behavior shield : how can I do this action ?
Bye.
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From windows Add Remove Programs, Change/Remove, select Change and uncheck the Behaviour Shield option, click Next and OK your way out, reboot and that should allow you to use the AOL software. See image, whilst this is for XP the process is the same for other OSes.
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@ DavidR
Hello,
I'm in 5.1.889 and I have STILL level of CPU for AvastSvc.exe below at 25% :( :( :(
I uninstalled the 'Behavior Shield' (within Windows with Add/remove, Change , uncheck Behavior Shield, Reboot).
It doesn't change anything
Bye.
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OK, this is getting out of my knowledge of avast and the latest build, but when you have this CPU level is the avast icon in the tray rotating ?
Since there is some reference in other topics to Acronis and the MBR scan (I know you aren't using acronis), do you have any other disk imaging software ?
I'm just wondering if your issue is still related to this MBR scan done by the anti-rootkit scan 8 minutes after boot.
Does this activity kick in at roughly 8 minutes after boot ?
If so you could try disabling the anti-rootkit scan on boot and see if that makes any difference. From the avastUI, Settings, Troubleshooting, uncheck the Enable rootkit scan on system startup.
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Hello DavidR,
thank you for your support ;)
OK, this is getting out of my knowledge of avast and the latest build, but when you have this CPU level is the avast icon in the tray rotating ?
--> There is no activity visible on the avast icon.
Since there is some reference in other topics to Acronis and the MBR scan (I know you aren't using acronis), do you have any other disk imaging software ?
--> I only use COBIAN Backup 10, but it runs only a file's backup (scheduled at 10:00 PM).
I'm just wondering if your issue is still related to this MBR scan done by the anti-rootkit scan 8 minutes after boot.
--> The High CPU level begin after Windows start.
Does this activity kick in at roughly 8 minutes after boot ?
If so you could try disabling the anti-rootkit scan on boot and see if that makes any difference. From the avastUI, Settings, Troubleshooting, uncheck the Enable rootkit scan on system startup.
--> I choose to disable all the options of the 'TroubleShooting' (Rootkit scan, raw disk access, self-defense module).
I'll see the result after the next reboot.
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Windows7 HP X64
4GB RAM
Athlon 240x processor
IObit Smart RAM set to Auto free RAM when system is idle and Do Not free during high CPU and Disk usage
AIS 5.1.889 with a license
All real time shields working normally
Just ran a Quick Scan and followed the CPU and Memory usage on AvastSvc.exe during the scan. It took 6:47 to scan 17.6GB, 128,000 files in 20,000 folders and no infected files found.
Most of the time during the scan the CPU usage for AvastSvc.exe was in the 40% to 50% range going as low as 5% and as high as 75% but both of those extreme numbers only happened a couple of times and only for a few seconds.
Most of the time the Memory usage was at around 34,000K which is about 1K higher then when the orange ball is not rotating. On a couple of occasions for a a few seconds at the most Memory usage got up to 150,000K - 175,000K but then went right back down to the 34,000K number
No noticeable change in available physical memory from before the scan and after the scan.
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Does this activity kick in at roughly 8 minutes after boot ?
If so you could try disabling the anti-rootkit scan on boot and see if that makes any difference. From the avastUI, Settings, Troubleshooting, uncheck the Enable rootkit scan on system startup.
There is no icon activity when CPU is high. The high CPU becomes in less then 8 min after boot (but not in the same time: 2-6 min)
I disabled the anti-rootkit scan on boot and didn't disable or uninstall behavior shield. 10 min past. The CPU is still normal. Hope it was the cause.
20 min past. Still Ok.
Let you know tomorrow if it's ok.
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<snip>
OK, this is getting out of my knowledge of avast and the latest build, but when you have this CPU level is the avast icon in the tray rotating ?
--> There is no activity visible on the avast icon.
Since there is some reference in other topics to Acronis and the MBR scan (I know you aren't using acronis), do you have any other disk imaging software ?
--> I only use COBIAN Backup 10, but it runs only a file's backup (scheduled at 10:00 PM).
I'm just wondering if your issue is still related to this MBR scan done by the anti-rootkit scan 8 minutes after boot.
--> The High CPU level begin after Windows start.
Does this activity kick in at roughly 8 minutes after boot ?
If so you could try disabling the anti-rootkit scan on boot and see if that makes any difference. From the avastUI, Settings, Troubleshooting, uncheck the Enable rootkit scan on system startup.
--> I choose to disable all the options of the 'TroubleShooting' (Rootkit scan, raw disk access, self-defense module).
I'll see the result after the next reboot.
The lack of activity would tend to indicate some conflict causing a hang of a process.
I don't know if COBIAN Backup 10 would load a low level driver at startup even though it is only scheduled to run a file backup at 10pm.
I wouldn't recommend unchecking all options in the troubleshooting section or how will we know which makes any improvement. So we should stick with just the rootkit scan at system startup disabled.
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Does this activity kick in at roughly 8 minutes after boot ?
If so you could try disabling the anti-rootkit scan on boot and see if that makes any difference. From the avastUI, Settings, Troubleshooting, uncheck the Enable rootkit scan on system startup.
There is no icon activity when CPU is high. The high CPU becomes in less then 8 min after boot (but not in the same time: 2-6 min)
I disabled the anti-rootkit scan on boot and didn't disable or uninstall behavior shield. 10 min past. The CPU is still normal. Hope it was the cause.
20 min past. Still Ok.
Let you know tomorrow if it's ok.
I though your problem was resolved http://forum.avast.com/index.php?topic=69540.msg586419#msg586419 (http://forum.avast.com/index.php?topic=69540.msg586419#msg586419).
So you should go back to that point in the topic and read through it again and see if there are any links to other topics also mentioned.
The one that you actually linked to, http://forum.avast.com/index.php?topic=69533.msg586405#msg586405 (http://forum.avast.com/index.php?topic=69533.msg586405#msg586405), which indicates that this should have been resolved in a virus definitions & engine update.
Ensure that you have the latest update.
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I though your problem was resolved http://forum.avast.com/index.php?topic=69540.msg586419#msg586419 (http://forum.avast.com/index.php?topic=69540.msg586419#msg586419).
It wasn't actually (you can read this branch through to find out that I've pointed on this http://forum.avast.com/index.php?topic=69540.msg588065#msg588065 ). As in my case the CPU was loaded on 97% even after that definition update.
The only thing that might have been helpful was disabling rootkit scanning on startup (I'll confirm it in the evening).
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Yes, preventing rootkit scanning on system startup resolves the problem with high CPU!
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OK, thanks for the update, hopefully with the dumps you sent previously they can find the conflict.
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@DavidR
The lack of activity would tend to indicate some conflict causing a hang of a process.
I don't know if COBIAN Backup 10 would load a low level driver at startup even though it is only scheduled to run a file backup at 10pm.
I wouldn't recommend unchecking all options in the troubleshooting section or how will we know which makes any improvement. So we should stick with just the rootkit scan at system startup disabled.
Hello,
1 - I disabled only the rootkit scan at startup (and checked "self-defense" and "raw disk access during avast! boot-time scan",
2 - I'm going to disable COBIAN service : at the next reboot, we'll see what's happend...
Bye
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Lets see how things go with the rootkit scan disabled for a little while a few reboots and confirm the findings before disabling the Cobian service.
When you do that you should enable the rootkit scan at system startup and see if things are OK, no high CPU and that would confirm that the conflict is between those two elements.
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Yes, preventing rootkit scanning on system startup resolves the problem with high CPU!
Thanks, that seems to have works for me for now. My CPU usage had been high several times since the 5.1.889 update but nowadays it was all the time.
Now, the process uses 00-02% of my CPU cycles.
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Yes, preventing rootkit scanning on system startup resolves the problem with high CPU!
Thanks, that seems to have works for me for now. My CPU usage had been high several times since the 5.1.889 update but nowadays it was all the time.
Now, the process uses 00-02% of my CPU cycles.
@ DraGonflY_27z
Are you using any kind of hard disk imaging software, like some of the others with this problem ?
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@ DavidR
Lets see how things go with the rootkit scan disabled for a little while a few reboots and confirm the findings before disabling the Cobian service.
When you do that you should enable the rootkit scan at system startup and see if things are OK, no high CPU and that would confirm that the conflict is between those two elements.
1 - With 'Rootkit scan' disabled and COBIAN disabled : no high CPU activity
2 - With 'Rootkit scan' disabled and COBIAN services activated : no high CPU activity
-->
I'm going to disable COOBIAN and reactivate 'Rootkit scan' and we'll see the results later.
Then I'll reactivate COBIAN.
The results in a future post...
Bye.
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Yes, preventing rootkit scanning on system startup resolves the problem with high CPU!
Thanks, that seems to have works for me for now. My CPU usage had been high several times since the 5.1.889 update but nowadays it was all the time.
Now, the process uses 00-02% of my CPU cycles.
@ DraGonflY_27z
Are you using any kind of hard disk imaging software, like some of the others with this problem ?
Well, no. I do use vmware though, and some vmware processes are always running.
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I was just wondering as it seems that a number of those with this problem have disk imaging software.
Though I wouldn't have thought the VM software would be the same way, but I guess it must have a hidden VM system driver running and that may be a factor.
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@ DavidR
I was just wondering as it seems that a number of those with this problem have disk imaging software.
Though I wouldn't have thought the VM software would be the same way, but I guess it must have a hidden VM system driver running and that may be a factor.
Lets see how things go with the rootkit scan disabled for a little while a few reboots and confirm the findings before disabling the Cobian service.
When you do that you should enable the rootkit scan at system startup and see if things are OK, no high CPU and that would confirm that the conflict is between those two elements.
Hello,
NO, I Haven't disk imaging software
I try four combinations, below the results:
1 - With 'Rootkit scan' disabled and COBIAN services disabled : no high CPU activity
2 - With 'Rootkit scan' disabled and COBIAN services activated : no high CPU activity
3 - With 'Rootkit scan' checked and COBIAN disabled or activated : high CPU activity
So, it seems that 'Rootkit scan' checked interfers with other software than COBIAN services...
Bye.
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Yes, looks like something doesn't agree with the anti-rootkit scan or vice versa.
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Yes, looks like something doesn't agree with the anti-rootkit scan or vice versa.
Has there been any official resolution to this problem? My system exhibits the same problem as Heldon's.
Thanks.
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I honestly don't know as this particular topic seems to have some different system software.
If there has been anything found then it is likely to be in either the avast 6.0 beta build or when avast 6.0 is released. So in the meantime the anti-rootkit is the suggestion.
But that isn't a recommendation as we haven't a clue about your system and what you have running on it (e.g. Cobian service like Heldon's system), as there could be a different reason for the activity ?
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My system is WinXP Home/SP3/ with avast! free 5.1.889.
I, too, have disabled rootkit scan and my high CPU activity (was running 90+% avastsvc.exe regularly) has ceased - after reboot. I am using Cobian backup software version 9, but that didn't seem to matter in Heldon's case. I have Spybot-S&D 1.6.2 resident, also.
One other interesting note: My screen saver now works properly, whereas before the rootkit scan disable it did not.
Thanks.
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My system is WinXP Home/SP3/ with avast! free 5.1.889.
I, too, have disabled rootkit scan and my high CPU activity (was running 90+% avastsvc.exe regularly) has ceased - after reboot. I am using Cobian backup software version 9, but that didn't seem to matter in Heldon's case. I have Spybot-S&D 1.6.2 resident, also.
One other interesting note: My screen saver now works properly, whereas before the rootkit scan disable it did not.
Thanks.
Please start your own topic by selecting NEW TOPIC in:
http://forum.avast.com/index.php?board=2.0
Its best to un-install Spybot S&D as it conflicts with avast! especially its resident protection.