Performance issue with Norton Antivirus 2004

Hi,

I just realised a weird thing. First of all, let me describe the setting of the stuff :slight_smile: I use Blender on two different computers : my home comp, and my laptop. On my comp, there’s no problem with Blender at all : all works right and smoothly. But on my laptop, after a few minutes of use, Blender becomes totally unusable : mouse clicks take ages to be taken into account, display is very slow, benchmark doesn’t work anymore, etc… I investigated for several days about this problem : tried to change my graphic drivers, etc… but in vain. Finally, I realised that it only was Norton Antivirus 2004’s fault !! Indeed, when i disable it, Blender runs smoothly on my laptop for several hours.

Sooo… to conclude, if you have performance issues using Blender, try to switch off your antivirus ! Or, better, exclude the installation directory from the “Auto-Protect” process (by default : “C:\Program Files\Blender Foundation”). It works fine for me.

Is it a known-issue ? Is it fixable ? Should I submit a bug report for this ?

Just wanted to share :slight_smile: I’m sure it can help several people and avoid them many hours of searching as I did :stuck_out_tongue:

(obviously, all I said apply exclusively to Windows users :wink: )

mcaffee has had similar problems [but not with blender]

what version of windows?

I use Windows XP. I have a ATI Radeon Mobility 7500 on my laptop and the latest drivers from ATI.

If I can help to fix the issue, feel free to ask me more details about my config :slight_smile:

Here are some infos from DxDiag about my config, in further details :


System Information

Time of this report: 8/7/2004, 08:39:07
Machine name: CORT-MOBIL
Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 1 (2600.xpsp2.030422-1633)
Language: French (Regional Setting: French)
System Manufacturer: Intel Corporation
System Model: Sheeks - Northwood/Brookdale Customer Reference Board
BIOS: BIOS Revision: 1.01.0a
Processor: Intel® Pentium® 4 CPU 2.00GHz
Memory: 510MB RAM
Page File: 222MB used, 1025MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0b (4.09.0000.0902)
DX Setup Parameters: Not found
DxDiag Version: 5.03.0001.0902 32bit Unicode

    Card name: Radeon Mobility 7500
 Manufacturer: ATI Technologies Inc.
    Chip type: MOBILITY RADEON 7500 AGP (0x4C57)
     DAC type: Internal DAC(400MHz)
   Device Key: Enum\PCI\VEN_1002&DEV_4C57&SUBSYS_56001558&REV_00

Display Memory: n/a
Current Mode: 1400 x 1050 (32 bit) (60Hz)
Monitor: Écran par défaut
Monitor Max Res:
Driver Name: ati2dvag.dll
Driver Version: 6.14.0010.6458 (English)
DDI Version: unknown
Driver Attributes: Final Retail
Driver Date/Size: 6/10/2004 22:57:24, 207360 bytes
WHQL Logo’d: n/a
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: ati2mtag.sys
Mini VDD Date: 6/10/2004 22:57:04, 746496 bytes
Device Identifier: {D7B71EE2-0F17-11CF-D26F-0A76A1C2CB35}
Vendor ID: 0x1002
Device ID: 0x4C57
SubSys ID: 0x56001558
Revision ID: 0x0000
Revision ID: 0x0000


Display Devices

    Card name: Radeon Mobility 7500
 Manufacturer: ATI Technologies Inc.
    Chip type: MOBILITY RADEON 7500 AGP (0x4C57)
     DAC type: Internal DAC(400MHz)
   Device Key: Enum\PCI\VEN_1002&DEV_4C57&SUBSYS_56001558&REV_00

Display Memory: n/a
Current Mode: 1400 x 1050 (32 bit) (60Hz)
Monitor: Écran par défaut
Monitor Max Res:
Driver Name: ati2dvag.dll
Driver Version: 6.14.0010.6458 (English)
DDI Version: unknown
Driver Attributes: Final Retail
Driver Date/Size: 6/10/2004 22:57:24, 207360 bytes
WHQL Logo’d: n/a
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: ati2mtag.sys
Mini VDD Date: 6/10/2004 22:57:04, 746496 bytes


Disk & DVD/CD-ROM Drives

  Drive: C:

Free Space: 3.7 GB
Total Space: 28.6 GB
File System: NTFS
Model: IC25N030ATCS04-0

  Drive: D:
  Model: SAMSUNG CDRW/DVD SN-308B
 Driver: c:\windows\system32\drivers\cdrom.sys, 5.01.2600.1106 (French), 8/29/2002 02:27:56, 47488 bytes

could it be another application that is running?
[perhaps spyware or a trojain?]

at work I use norton antivirus corporate edition version 7.6 with blender and do not have any problems

with mcaffee the problem with some applications was that they took ages to start [think 50-120Mb stanalone video players], I would think norton could have a simlar problem which could be fixed by disabling “file system realtime protection”

It is surely not a trojan or a spyware, because when I just exclude Blender folder from the Auto-protect scan (that is, the “file system realtime protection”), it works perfectly and smoothly :slight_smile:

I ran into similar with 3DS Max a while ago (but not on my laptop) which was hung by Norton (it was a problem with the license manager, nothing to do with 3D in fact).

My guess about that is that Norton must have a control system about all the acess to files. As Blender.exe (or its dll) is accessed a lot of times after a few minutes of execution, Norton must scan all acesses I think. Only a thought though.

Oh, just thought of something more likely to happen : perhaps Blender creates some temporary files that Norton scans while Blender tries to write them ?

autosaves?

default every four minutes, in a temp folder [c: mp or windows emp … I think it may depend on the version of blender or version of windows]