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too fast?

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can a CPU and Motherboard be so fast as to not support an antivirus program? I ask because i was told that a certaint pc at my job can't have antivirus program because of the speed messes up the program and causes the machine to freeze up...any comments?

28 replies

by jellimonsta

I doubt the problems would be because of a CPU being too fast. I imagine it could be too slow, or there may even be insufficient memory.

by jimhm

I haven't heard of anything like that unless the Antivirus software was made for DOS or Windows 3.5.

Sounds more like its an OS compatability problem than a speed issue.

by oz_media

If a PC is freezing up becuase of AV, I'd have to question the Admin. I have also never heard of a PC being too fast for software. Is it possible it the PC BIOS or another problem? I'd LOVE to see it myself and try to figure out what the REAL problem is.

try ABGFREE edition, it'll run anywhere on just about anything, SUCCESSFULLY!

by generalist

I have run into a few programs where the speed of the CPU creates problems. In most instances the problems stem from having to deal with a hardware interface that just doesn't have the ability to keep up with things.

Can you specify which antivirus software is causing the problem and what speed the various hardware modules are running at?

by guruofdos

But only in certain contexts...there always has to be a qualifier, doesn't there?!!

I have a PC in my office that is 'too fast for antivirus software'.

Let me start again.

I have a PC in the office which NEEDS to be fast for a certain mission critical task. Putting anti-virus software on the computer WILL affect the performance of this particular task. Realtime scanning would 'kill' the system dead, and scheduled scanning would interfere with the mission critical task. However, when the machine is idle, it gets scanned remotely via virus scanning software which can scan network drives.

What, you might ask, is so mission critical that it cannot be interrupted by a virus scanner (or indeed ANY background process)?

We build simulator systems. How they work and what they do is of no consequence in the scope of this discussion. What is relevant is the task for which the particular pc is used.

The system is used as a digital video recorder. Not in the sense of 'home media' or recording from the tv, but for creating extremely high quality video scenarios for our systems.

The original source material is often taken from uMatic or other high band analogue broadcast formats and has to be transferred from videotape to hard disk in real time. We do not use any compression methods during the capture stage...the footage is converted on the fly to raw digital data with a resolution of 768 x 576 (broadcast PAL) and a quantisation level of 16 bits per colour. This means a raw (sustained) data transfer rate of around 7Mbyte per second, and this has to be sustained over the duration of the tape, which could be as long as three hours. Obviously, the processor needs to be as fast as possible to ensure that no frames are dropped. Any background process or anything which interrupts flow of data to the hard disk during the capture process has to be avoided at all costs. Naturally, the end product of the process is going to be an avi or mpg file using whichever compression codec we choose, but encoding the data can take as long as it takes, and if something slows the system down during that stage it isn't an issue. The actual data capture is the key process. The better the quality of the capture, the better the end result. If the source media is less than perfect because of dropped frames, 'noise' or glitches caused by a background process interrupting data transfer, you won't get a decent final edit. The old adage applies - you can't make a silk purse out of a sow's ear.

There is one other situation I have encountered where a processor IS genuinely too fast for antivirus software. A similar issue occurred with a certain CPU being 'too fast' for an operating system!

Remember a few years ago, when the very best processors ran at around the 300MHz mark? Well, AMD brought out a 350MHz version of the K6-2 processor. The mainstream operating systems of the time were Windows 95 and Windows NT4. 98 was out but only had a market penetration of some 5%. When you upgraded from the 300 to the 350 K6-2, Windows 95 started 'rolling sevens'. There was actually a timing loop somewhere in the operating system which was upset by AMD processors 350MHz or faster, and Microsoft had to issue a fix for the problem. You couldn't even install 95 on a machine with a 350 or higher AMD. It would install, but on first boot, it would often die horribly. Applying the 'fix' cured the problem. I have used perhaps 20 or so AV programs over the years and I DID encounter three lesser-known packages that were processor speed dependent. That is, on CPU speeds above a certain point, the software rolled a seven the way that W95 would if you didn't apply the patch! A program called AVG (I don't remember the release version) had the problem on anything faster than 266Mhz cpu's.

Of course it may not be the actual speed of the cpu that is causing the problem. It may be the make of the CPU itself. There was a known issue with drivers for the old Voodoo2 accelerator cards. They would work on ANY machine at ANY speed.....unless the processor was an AthlonXP! Somebody DID write a set of Voodoo drivers for the AthlonXP, and naturally there was a demand for them. It sounds to me like if speed or cpu type IS an issue for this users AV software, then it's most likely it's an older package which was written before processors got so fast or before the particular model of processor was made.

I remember another similar issue with software and drivers for the Soundblaster Live! PCI128. When Intel changed the design of the Celeron and PII to 'Coppermine', the drivers refused to work. Nobody believed this at the time, but Creative Labs DID actually work out that the CPU core WAS the problem and they released a fix!

by jellimonsta

Interesting comments Mike. I am not sure of the likelihood of this user having the same issues though. Unless they have a brand new PC system with the fastest processor available and they found the AV solution on an old 5 1/4 out back :)

by guruofdos

possible and DO use an AV program I found 'out back'.

The video editor machine is running a water-cooled (office warming!) 4GHz Athlon (yes I hold my hand up and admit it....it IS overclocked...the PCI bus IS running at 41MHz!).

Having had nothing but problems with Norton (it keeps letting new stuff slip through!) I reverted to my old copy of Trend PC Cillin 2002 from the driver disk that came with a mobo about two years ago! Not only does it update far more often than Norton and seems to spot more nasties, it lets me scan the network drives from one PC and it has a firewall built in which is easier to use than the Symantec offering AND works harmoniously with the hardware firewall AND XP's built in firewall!

by koz365

the processor on the bisotar m7vigp motherboard is an AMD athlon 2100 the antivirus software was norton 2002 the operating system was 98se (now put back to 98fe with plus) we have various PCs here (14 in all) running win98se wy2k and xp and all have norton programs on them the PC in question was brought in by an independent dealer (whom i will not name) and stated the eariler remarks about the speed (all the PC is used for is to surf and e-mail)also stated that the antivirus was for nt not 98...I thank you for the comments as I will try and prove to my boss that he needs to stop dealing with this person (they took it out to repair and I truly belive they brought back a whole different PC). People like this is what makes buying and having a PC built a bad experiance for those who want only to do a good job... thanks again

by guruofdos

Thanks for the clarification and the update. The earlier posts were aimed in that direction! I just wanted to highlight that SOMETIMES speed IS an issue!

It seems that you were unfortunate to end up dealing with either an 'enthusiastic, but ill-informed' amateur or a downright 'dishonest' trader. These sort of people need stringing up by the testicles with piano-wire because they do give the rest of us honest, hardworking and reputable people a bad reputation. It only takes a few encounters with peple like this for some companies to end up with a permenantly 'tainted' impression of the industry as a whole.

'There is always one rotten apple to spoil the barrel'

Reverting form SE to FE.....you definitely got shafted. If you EVER send out a computer and are not sure it will come back the same...do what I do to check for rogue techs...

Use an ultraviolet marker and sign your initials and the date on all the drives, mobo, memory and components. If the machine comes back 'iffy', compare what's been billed against what's come back. If parts have been changed or replaced, insist that the 'old' parts are returned with the computer, and DON'T end up in THEIR toolbox! If you have been charged for new parts, you have paid for them but YOU still OWN the old ones!

Wave your IR lamp over the computer and the parts. You will soon tell if you are being 'screwed'.

I knew a shop once that blamed all ills on faulty memory and would inevitably charge for a new stick of good memory. When I did some undercover investigation work on the shop for my local Trading Standards office, I sent four friends in over three weeks with various computers all marked in this way and it was funny to see just how many parts they had back with each others initials on the parts and how often one stick of memory got circulated between machines, having been charged for a new one because the old one was faulty!

by hal 9000

You should have n=mentioned Data security as well because this is a very important area that is only now just becoming made public knolledge or to put it better the public is being better educated. Then there is the fact that this is a company computer so Data Security is far more important here than anywhere else.

by hal 9000

If they are prepared to take it out for repair they can't have any form of Data Protection Policy in place particuarly as you have already mentioned that it is ud=sed to recieve e-mail so it only goes to assume that it also sends e-mail out and there fore must have an addres book in it with all the vital company contacts not to mention all of those incoming e-mails and what they contain.

I can remember a very small one man opperation that was taken to the cleaners doing the same thing as when it was taken in for repair someone cloned his HDD data and sold off all his business contacts to an opersisition company along with all of his quotes and because he sold insurance all of his current contracts and their current prices. The company who obtained this information then went about calling all of his clients and undercut his quotes and current contracts.

Now if this can happen to one person it only stands to reason that if you work for a larger company the risks are far greater and the posibility of Data thieft has a far greater impact and damages than it would for a home user who only plays games.

What I would be thinking here is that this computer has been dileberetly supplied this way so that there is a regular income from it for repairs and possibly a regular source of data to sell to any interested person particuarly if you are of the opinion that the original unit wasn't the one returned after the "Repair."

Just to show how important data protection actually is over here the South AUstralian Government sold off a lot of computers and any that held sensitive information had their drives wiped and where reloaded bu tthe others which didn't do anything important just had their data removed and where then sold on. One that came from a nonsecure place eventually ended up in the hands of a 12 year old kid who found an active address book still intact well no big deal except that it had the Premiers {read that for any US people here as Govener} personal e-mail address on it as well as many others all directly connected with the then Government. This kid took to sending e-mails to the then Premier asking for money.

It only took 3 months to find out what was going on and I would be surprised if the investigation didn't cost far more than was ever made from selling these computers in the first place. But what made it even better was that because of the age of the child no action could be brought against him and he didn't even know who the Premier was he was only going through the addres book asking for money to be sent to him. No direct amounts or any details of how to transfer this money just asking for money {Like any 12 year old doesn't have enough money and would refuse more right!}

But that is just one excelent example of what is on computers Hard Drives even on computers that aren't considered as doing anythng that requires any form of security. Just think how many home computers are sold with their data intact and the possibility of someone gaining access to the original owners personal details Identy or even their banking information and here I mean getting the money not tracking how it is spread around by the original owner. I can remember where a house was sold buy someone who stole the owners identy and this was only found out when the new owners rolled up with the moving truck.

But it was a legal sale as a person who sold the house had all the proper documentation. We are only now begining to start to put in place Identy protection laws and from past experience it will take many years for them to become water tight and protect the inconent parties. But in the mean time we are all in a legal limbo.

We don't need to add business data into this mess as well.

by jellimonsta

I hope you buckle up when you drive that thing Mike. Stay out the bars beforehand too :)
Someone may get hurt :oP

by guruofdos

I have a KVM line Cat5 line-driver and operate it 'remotely' from another desk, in another office, in the building next door. Don't you just LOVE Extron interfacing products (keyboard, mouse and monitor plugged into a little box the size of a cigarette packet...similar box connected to PC. One Cat5 cable between the two!!! Up to 1.5km between monitor and PC and still use 1280 x1040 resolution!!!! YEEEEE-HARRRRRRRR!)

You think I WANT to be anywhere near it when she lets rip?!!! No sir-ee!!

Actually, if you want the truth, I can't be bothered to walk down the stairs, out of one door in another door and up another set of stairs, just to see how the thing is doing....that is NOT how us techies do things, is it!!!! Why walk 100 yards four or five times a day when you can spend $100 on a solution and save your excercise for the coffee machine and jogging the 8 miles to and from the office!!

by koz365

thanks to all for the info..wish I had thought of the IR marker before will keep in mind once again thanks

by koz365

what would think if said person also told you not to run any antivirus software on said system and told you to run a scan about once a month from the antivirus CD. and also told you that you do not need to do any updates because the system has 98 plus on it and does not need to be updated? as you can tell this is really bothering me and i have my suspicions about whether they are trying to (compromise?) the network that the PC is on ...call me paranoid but don't call me werid..(not another id 10 t call)

by guruofdos

use these people again. Get a reputable consultant in NOW. Your system has probably been compromised. The advice they gave you is totally contary to normal practice!!!!

by deadly ernest

Even primary school kids know that you have to keep your anti-virus software up to date and run it regularly. The advice above is so far against basic, let alone standard, practice that they are either to dumb to come in out of the rain or crooks loking to compromise your system. I would take no chances and format and rebuild avery machine that they came within 10 metres of.

by stuart_at_oz

I say he is one of three things:

1 - A complete technopeasant, your lucky he was able to turn it on

2 - A shonk who wants more business from you when it all goes pear shaped again

3 - A shonk who has already infected the computer with a virus/spyware that the "un-updated" version of the antivirus software does not detect, and is making money or otherwise compromising the computer.

We have almost 1000 win98 computers with Plus and we are diligent in keeping them up to date with antivirus software (we can force it at will).

That along with a proactive email gateway and using Lotus Notes instead of Outlook has worked well for us so far.

Stu

by hal 9000

Even Paronoid people can be right some times. But this is not a case of paronioa but more like a case of self preservation as anyone silly enough to believe this drivel desivers what they get.

Now what have we had this year so far Slammer, Blaster just those two alone would have taken the entire network down and given someone a hell of a lot of work that would have all been totally unnecessary in the first place if some connon sence had been applied.

The sooner that this person can be got rid of the better as this person is not only comprising the computer in question but attempting to comprise the entire network.

But then again perhaps he actually works for some opporsisition company and is only trying to put your business out of business so that his prefered customer will get more business.

by hal 9000

Tell your CEO or whatever to surf the net a bit and look up news articles on Telstra Bigpond AU over the last few days. It seems that they got a mass mailing virus and passed it along to all their customers and those that had no up to date AV started pumping out spamm at such a rate that the whole system crashed. This has continued for 9 days now and there presently is still no answer as they just got it wrong.

What makes it even worse is that this very Virus was talked about on a Linux link that I subscribe to several weeks ago so it is nothing new, the pitty here is the the MS boys didn't seem to think it important enough to do anything about so their ISP which I might add is the biggest in Australia has been down for the count for 9 days.

Now just ask your CEO, Boss or whatever could he have the business running without any e-mail for 9 days or longer?

If he actually reads the articles that have been written about this he might think a bit differently as every business that I know of requires e-mail and has massive losses when their mail system is dowm. Actually whenever a mail server goes down it is panick stations at every business that I have ever seen anything else can fail but the e-mail has to work!

by koz365

What we are goin to do is sit down and try to explain that the best solution would be to wipe the system put a new O/S on it with AV and hope that when there is a problem that we stay in house this time (I've had to reinstall Internet Explorer already) and he is finding that programs that he had before will not run under the current config wish me luck on this and thanks again

by guruofdos

But, you shouldn't need it!

If you start from scratch, and only load genuine licenced copies of the software, you shouldn't have any major problems. Windows Update should take care of any OS bugs and patches, and if you are using licenced copies of your software, then the software companies SHOULD be able to assist with genuine problems.

I would make ONE recommendation however. Before you start, do a comprehensive audit of every system. Remove the lid, and make sure you write down ALL the hardware information. Get the exact make and model of the graphics card, sound card, modem, network cards etc, and precise motherboard information if you have on-board devices. Make sure that you have all the correct drivers to hand before you start. I personally burn a CD with a folder for each machine in our network, and copy drivers for each machine into the appropriate folder. That way if there's ever a problem, I have any necessary drivers on one disk easily to hand. Modem or network drivers are ESSENTIAL. Graphics and sound drivers CAN be downloaded from the internet later if required, but you CAN'T connect to the internet if the modem or network cards don't work!

Having prepared your drivers, back up any data you require and then start from scratch with each machine. Do one machine at a time and make sure it is up to speed before moving on to the next. After installing the OS, GET YOUR ANTI-VIRUS ON THERE! You may have to disable it temporarily when installing MS Office.

by hal 9000

If you are using XP Pro with the file encryption turned on transfer all the data from the HDD to another computer on the network as you'll never see it again if you try to copy it to a spare drive and then transfer that HDD around the place.

Other wise do as G.O.D. said and you will not go wrong.

Best of Luck

Col

by thechas

I read a post last week that pointed to a Microsoft Knowledge Base article that states that W98 can / does have problems with CPUs faster than 2GHz.

Chas

by guruofdos

I run 98 on 2.2, 2.4, 3.08 and 4GHz machine with no problems! Both Intel and AMD flavours too, and SIS, VIA and Intel chipsets. Not found any problems yet. Bit like the fabled 'memory leak'...I've never had a problem with it!

by guruofdos

http://tinyurl.com/piyn

It is not a problem with Windows, per se, but a problem with one of the networking files (NDIS).

If you don't use the machine on a network then you have no problem, and there is actually a patch. No different from the W95 and AMD K6-2 issue with >350MHz processors a few years ago...sorta!

by thechas

Thanks for the link.

I haven't had time to look for the article myself.

I suspect that like many Windows issues, that the speed issue is configuration dependant.

Much like the large RAM bug.

The good news, is that we won't be seeing a new OS from Microsoft until at least 2006. (per the last news item I read about "Longhorn")

Chas

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