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I believe InSight deals with real time scanner but your full on demand scanner. If you see what InSight is scanning its not scanning your programs folders. It is scanning your running procees so it knows whats safe running programs are.
I had a problem with Norton Insight recently in that my computer is 70% trusted, so only 30% should need scanned. However, the number of files scanned was just the same, but someone helpfully pointed out that the total files will be the same, but in the subsection the trusted files should be those that aren't scanned.
I'm running a scan at the minute and out of 100,000 files, only 500 are trusted. So that makes a trust rating of 0.5% Why does it not work?
That would make sense if this is correct. There were claims at the Wilder Security forum that setting everything to default, and then running a complete scan would reduce scan times significantly. That appears not be the case from what you are saying, and my own experience with the program.
hi all - not sure if you've seen this or not, but i think it may help explain what you are seeing.
mel
I have read the information about the properties and logic of Norton Insight. However, I do not think it address the issue I am interested in, specifically the scan time reduction for a complete scan once NI has been run. There have been claims of 10 minutes both in the Wilder Security Forum as well as by Neil R in PC Magazine http://www.pcmag.com/article2/0,2817,2330027,00.asp
I have run complete scans at least a dozen times both in beta and with the final version, and I just don' t see any increase in scan speeds after NI is run.
I'm sorry that the blog posting on Norton Insight did not explain things clearly enough.
The Norton Insight UI shows you the current coverage of all running processes and their loaded modules.
Clicking the refresh button reevaluates all the running processes and their modules against the backend.
The background process will catalog other interesting files, such as services and startup times.
If you have 100,000 MP3 files on your system, and you have 50 EXE's on your system, and Norton Insight trusts the 50 EXE's, then scanning all 100,000 MP3 files and 50 EXE files, with and without Insight will make little difference.
If you run a quickscan, which is the default and only scans what is running or could run, and this is the area that Insight focuses on and what the blog posting calls interesting files, then Insight will make a huge difference.
When you run a scan and you click the ">>" button, or in history click "+", the details panel will expand and show you how many files were skipped because they are trusted, and how many files were skipped because they have already been scanned.
If you scan the 100,000 MP3 files none will be trusted and none will be skipped.
If you scan them again, none will be trusted, and all will be skipped, resulting in a very fast scan.
These files will again be scanned as soon as the virus definitions change.
Also keep in mind that Insight only works for files on NTFS volumes.
Pieter
I appreciate your reply, but as a computer user since 1968, I am still not clear on what you are saying about scan speeds. A Quick Scan is very fast on my computer and always has been, but that is not my area of interest. In your example, you state that the the 100,000 MP3 files once run, will run faster as they are all skipped, but scanned again as soon as the virus definitions change. This means that since definintions now change quickly, a user is not likely to see a dramatic increase in scan speed- right? In other words, files once scanned are skipped but only in the time window until new definitions are added.
Norton Insight focuses on optimizing performance when scanning well known or commonly used executable content.
File scanning is cached (unless disabled in options) until new full def updates are downloaded, the cache is not flushed by pulse updates (AP internally handles pulse updates on access).
Full system scans are not the primary focus on Norton Insight, Norton Insight focuses on making scanning of executable content faster.
Any file scanned, regardless of type, gets the benefit from caching.
Pieter
Mine shows 81% trusted, but that seems to make no difference in terms of the time needed to complete a full scan. I have run a scan before Insight and after, and the the time to scan is basically the same. So I am not clear as to what the purpose of Insight is, if it does not reduce scan times.
I have about 970,000 files with a fast hard drive, and the scan takes 2.9 hours to complete- much slower than Avira which is fast by AV standards. There were claims at Wilder's Security forum that resetting everything to default and then scanning was a way to reduce scan times significantly, but from what I have read from Symantec employees on this board, there will be a reduction in time spent, but not a huge reduction with Insight.
My question is: how much (on average) should Norton Insight reduce scanning time if 80% of the files are trusted?