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拍手0

nis.exe consuming too much RAM on Windows 7

Over the last six months, I have noticed the Norton exe nis.exe consuming more and more RAM according to the Win 7 Resource Monitor, many times more than even iTunes (which is a notorious memory hog that I can't avoid using unfortunately).

Right now it is showing 333,448 MB used and it is faulting. My machine has 8MB total and can't be upgraded or I surely would. I don't really want Norton to be the deciding factor to upgrade to a higher capacity machine. Please help.

Thanks

rfgvet1

ラベル: Performance

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拍手0

Re: nis.exe consuming too much RAM on Windows 7

Hi rfgvet1:

1. I just installed a trial version of NIS on my Windows 7; I am unable to detect the said Norton.exe.

2. I did the following test:

  • Leave NIS and my system alone, and get the following screenshot; the said NIS.exe consumed 5 ~ 6MB memory.

  • RAM usage climbed as high as 32 (once) ~ 9 MB while scanning my system.

  • I ran IE, FF, Opera and Chrome while performing the Full System Scan.

Then, could you please provide us with extra info such as Startup (run MSCONFIG), Task Scheduler, the programs list (Control Panel > Uninstall a program)? Meantime, please learn how to avoid and rid of junkware/foistware while installing 3rd-party download.

And, could you please let me know if you've scanned your system via an up-to-date NIS under Safe Mode?

Please update this thread with the aforesaid info & the latest results.

Thanks.

PUP Hunter PRO: Just TRYING to save the world (U) from cyber threats, A single blog post, at a time, and ONCE & FOR ALL. (A fan of Nadia_Kovacs)
拍手1 Stats

Re: nis.exe consuming too much RAM on Windows 7

20750065:

Hi 20750065:

I suspect you're looking at the wrong instance of nis.exe for your testing, since the username you show in your screenshot is TEST.  If you open Task Manager and select "Show processes from all users" you should see two instances of nis.exe with different PID numbers - one for real-time protection (under the user name SYSTEM, usually with the lower PID number since it loads earlier in the boot process) and one for the GUI and non-critical tasks (under the user's Windows login account).  That way if your Norton GUI or a non-critical background task crashes it won't disable your real-time protection at the same time. The memory allocation for the instance of nis.exe under your username TEST should increase after you open your Norton GUI.  Here's a screenshot for NIS v22.7.0.76 for my 32-bit Vista machine (3 GB RAM) using Sysinternal's Process Explorer:

Hi rfgvet1:

Which version of NIS are you using (the latest is v22.7.0.76 - go to Help | General Information | About)?  If you run a few manual LiveUpdates does it report that there are no available updates (i.e., that you are fully patched), or do you receive a prompt to re-boot to install a product update?

Which thread are you seeing the high (333,448 MB) consumption for (under SYSTEM or your own username) and is it the value under Working Set or Private Bytes?  The value under Working Set tends to fluctuate up and down as Norton runs various operations,  but if you're seeing the Private Bytes (the amount of private virtual memory a process has allocated) constantly increasing over time that might indicate a memory leak.
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32-bit Vista Home Premium SP2 * Firefox v48.0 * NIS v22.7.0.76 * MBAM Premium v2.2.1
HP Pavilion dv6835ca, Intel Core2Duo T5550 @ 1.83 GHz, 3 GB RAM, NVIDIA GeForce 8400M GS

拍手0

Re: nis.exe consuming too much RAM on Windows 7

1. @lmacri: You are right. I missed out the "Show processes from all users" tab.

The memory allocation for the instance of nis.exe under your user name TEST should increase when the the Norton GUI is opened.

Now, I am performing a tough test on my Win 7 sp1 (vm: i7, 4gb RAM) 

  • Full scan
  • While running FF, Opera, IE 11, Chrome and Office 95, 2007

The memory allocation was up to 103MB.

Run many tabs under browser:

Run many tabs + scanning system fully: NIS.EXE consumed up to 117 MB RAM.

(Edit) Meantime, from Resource Monitor - Memory tab, we can see:

  • No.1: ff.exe: 223,546 Commit (KB)
  • No. 2: svhost.exe: 157,728 KB
  • No. 3: NIS.exe (Main GUI, I guess) 131,880 KB

When the full scan was completed, NIS.exe became normal.

2. @rfgvet1 again, could you please let us know if you've scanned your system via an up-to-date NIS under Safe Mode?

personally, something triggered that high RAM usage. Thx and luck.

PS: What is Private Bytes(?), Virtual Bytes, Private Working Set? See http://stackoverflow.com/questions/1984186/what-is-private-bytes-virtual...

PUP Hunter PRO: Just TRYING to save the world (U) from cyber threats, A single blog post, at a time, and ONCE & FOR ALL. (A fan of Nadia_Kovacs)
拍手2 Stats

Re: nis.exe consuming too much RAM on Windows 7

20750065:

Now, I am performing a tough test on my Win 7 sp1 (vm: i7, 4gb RAM) 

  • Full scan
  • While running FF, Opera, IE 11, Chrome and Office 95, 2007

The memory allocation was up to 103MB. ...When the full scan was completed, NIS.exe became normal.

personally, something triggered that high RAM usage.

Hi 20750065:

It's normal for nis.exe to have to allocate additional RAM when a resource-intensive task like a manual Full System Scan or an idletime background Norton Optimizer (disk defragmenter) task (Settings | Administrative Settings | Background Tasks | Configure) is triggered and additional threads are loaded under the nis.exe process.  Once the task is finished and CPU drops back to normal levels the allocated RAM should drop back to "normal" levels and free up resources for other processes.

If the OP rfgvet1 has a memory leak then the allocated RAM will not be released once the task is finished.  As I noted in my previous post, if a process has a memory leak then the Private Bytes (Commit Size) will typically increase over time following a system shutdown and restart, and system performance will slowly degrade until free RAM is eventually exhausted and the system freezes or crashes.  A handle leak is another typical symptom of a process that fails to release system resources after a task runs to completion - see yecart's thread handles.
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32-bit Vista Home Premium SP2 * Firefox v48.0 * NIS v22.7.0.76 * MBAM Premium v2.2.1
HP Pavilion dv6835ca, Intel Core2Duo T5550 @ 1.83 GHz, 3 GB RAM, NVIDIA GeForce 8400M GS

拍手0

Re: nis.exe consuming too much RAM on Windows 7

Hi,

Thanks for your initial comments and analysis.

I am running NIS 22.7.0.76.

I have not yet run a scan in safe mode, but I have run Power Eraser several times. Sometimes running PE tends to solve the problem temporarily (or maybe I am imagining this) but it always reoccurs. I may have Malware lurking somewhere so I'll run a full scan in safe mode and see what I get.

In the Process tab of Task Mgr, if I display "show processes from all users" I see two NIS instances, the SYSTEM consuming more than the user instance, which would be expected. Right now, these appear normal to me: SYSTEM between 45-65,000k, user about 7k. In the Resource Manager view though, under processes, NIS has almost 400k "committed" and the SYSTEM (Working Set) and USER (Shareable) reflect the 45-65k and 7k numbers listed previously. From my relatively uneducated view, it appears a lot more is being allocated than used, probably indicating a leak. I'm sure you know this, though :-)

I can do screenshots of MSCONFIG, Task Mgr, etc, but perhaps I should scan in safe mode first. If we could do a remote access session in lieu of taking all the screenshots that would be great but I'll do what I need to in order to solve this :-)

Bob

拍手0

Re: nis.exe consuming too much RAM on Windows 7

rfgvet1:

Sometimes running PE tends to solve the problem temporarily (or maybe I am imagining this) but it always reoccurs. I may have Malware lurking somewhere so I'll run a full scan in safe mode and see what I get...

I can do screenshots of MSCONFIG, Task Mgr, etc, but perhaps I should scan in safe mode first. If we could do a remote access session in lieu of taking all the screenshots that would be great but I'll do what I need to in order to solve this :-)

Hi rfgvet1:

If you want someone to run a remote access session you will have to contact Norton Customer Support directly via a Live Chat at www.norton.com/chat.

Most people who post in this forum are just regular users sharing advice and information about their Norton product.  Symantec employees who post in the user forum will have a red "ADMIN" or "EMPLOYEE" badge next to their username.  Norton Gurus are expert users who have regular contact with the Symantec employees. See Nikhil_CV's thread Norton Community Ranks and Levels for more information.

EDIT:

..and just a word of caution about running the Norton Power Eraser (NPE) if you aren't familiar with this tool.  The NPE is a very aggressive scanner that has been known to damage Windows system files during removal of suspicious files.  It is normally intended to be used as a recovery tool (i.e., if you cannot boot Windows in normal mode after a malware infection).  See warnings about the NPE in gamott2015's thread MS Word, Adobe Acrobat won't open Is NIS Optimizer the cause?.

I normally suggest that users download the free Malwarebytes Anti-Malware (MBAM) if they suspect they have a malware or PUP (potentially unwanted program) infection that can't be detected by a Norton Full System Scan.  Just decline the 14-day trial of the Premium (real-time protection) features during the final step of the installation.  Start with a standard Threat Scan with the default settings and move on to a deeper Custom Scan of all hard drives if a Threat Scan doesn't detect any suspicious files or registry entries.
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32-bit Vista Home Premium SP2 * Firefox v48.0 * NIS v22.7.0.76 * MBAM Premium v2.2.1
HP Pavilion dv6835ca, Intel Core2Duo T5550 @ 1.83 GHz, 3 GB RAM, NVIDIA GeForce 8400M GS

拍手0

Re: nis.exe consuming too much RAM on Windows 7

Thanks for the advice and for the Malware detection software links. Always good to get recommendations from others on those packages.

I will run my safe full scan tonight and then chat with a Norton guru tomorrow.

Again, really appreciate all the advice.

Bob

拍手0

Re: nis.exe consuming too much RAM on Windows 7

rfgvet1:

I will run my safe full scan tonight and then chat with a Norton guru tomorrow.

Hi frgvet1:

If you ran full system scans with both Norton and the free MBAM and nothing is detected, it's unlikely (but not impossible) that you have some hidden malware like a root-kit / boot-kit or zero-day infection that was missed by both scanners. If Norton Customer Support can't find a malware or PUP infection on your system they might ask to run the Norton Remove and Reinstall (NRnR) Tool during your Live Chat session to refresh your NIS installation, just in case your current installation is corrupted.

Before you start your Live Chat, make sure that any previous antivirus you had on your system like McAfee, Kaspersky, BitDefender, etc. (including a trial version installed at the factory) has been uninstalled and wiped off your system with the manufacturer's removal tool.  The Norton support article Should you run more than one security product on your computer? includes a warning about degraded system performance when you run multiple security programs in real-time protection mode.  Even paid versions of anti-spyware / anti-malware like MBAM Premium and SUPERAntiSpyware Professional that load at boot-up and run in real-time protection mode can conflict with antivirus software if they aren't configured properly.

Old antivirus software uninstalled from the Control Panel can still leave behind orphaned registry entries and files that have to be wiped with the manufacturer's removal tool before installing Norton.  If you think you could have traces of old antivirus software on your computer, mention this during your Live Chat or see the list of links to antivirus removal tools in the ESET support article Uninstallers (removal tools) for common Windows antivirus software.
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32-bit Vista Home Premium SP2 * Firefox v48.0 * NIS v22.7.0.76 * MBAM Premium v2.2.1

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