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Mike Chaney's Tech Corner > Mike's Software > Qimage Ultimate > Limiting QU's use of processing power
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Author Topic: Limiting QU's use of processing power  (Read 10171 times)
Anthony
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« on: November 22, 2010, 10:01:40 AM »
Does anyone have any advice as to how to limit QU's monopolising of the computer processor(s) when re-sizing images (OS is Windows 7 64 bit)? That particular processing causes Explorer to all but stop, Office apps take an eternity to load and Access won't load at all until the re-sizing is finished. It would be nice to be able to limit processing resources to, say, 50% so that I don't sit and twiddle my thumbs. I can't afford to buy a dedicated QU computer
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Fred A
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« Reply #1 on: November 22, 2010, 11:01:09 AM »
Quote
Access won't load at all until the re-sizing is finished. It would be nice to be able to limit processing resources to, say, 50% so that I don't sit and twiddle my thumbs. I can't afford to buy a dedicated QU computer

Anthony,
I think you have something else running.
See my screen snap.
Qimage Ultimate is using 25% of my CPU after I loaded 25 images into the queue, all large RAW files. 
I set it to downsize to 1024 x 768.
Using CTRL-ALT-DEL, I opened Task manager to see the CPU usage for any application that is loaded and running.

I opened Access and scrolled my movie lists, and opened Word Perfect and read my last letter.

I suspect that some other application is running. It could be a new backup program that likes to run all the time, or MOST LIKELY, your over aggressive anti virus program that checks any file moved or created for viruses.
I have that feature turned off in my AVG anti virus program.

Take a look around.

Fred
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Terry-M
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« Reply #2 on: November 22, 2010, 12:12:14 PM »
Anthony,
I know Fred's PC is a quad core machine so I fired up my old Pentium 4 PC and did a similar test. Task Manager showed QU was using 50% of the CPU capacity, most of the rest was "System Idle Process". I could open Word and create a document, create and read e-mails, and browse files in Explorer without any problem.
So, I would agree with Fred, you have a problem on your PC  Sad
Terry
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admin
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« Reply #3 on: November 22, 2010, 01:45:31 PM »
Quote from: Anthony on November 22, 2010, 10:01:40 AM
Does anyone have any advice as to how to limit QU's monopolising of the computer processor(s) when re-sizing images (OS is Windows 7 64 bit)? That particular processing causes Explorer to all but stop, Office apps take an eternity to load and Access won't load at all until the re-sizing is finished. It would be nice to be able to limit processing resources to, say, 50% so that I don't sit and twiddle my thumbs. I can't afford to buy a dedicated QU computer

If that is happening, then your operating system doesn't know how to handle processes properly for some reason.  Unless you've manually changed the process priority for Qimage, it should use 100% of the CPU until you start another application.  As soon as you start another application, that application that is now in the foreground should get the majority of the CPU because that's how the operating system will allocate resources.  Of course, any application that is running heavy calculations will take 100% of your CPU if that's the only thing running: it should... why waste computer power?  BUT, as soon as you switch over to another application and put that in the foreground, the operating system is supposed to be smart enough to allocate significant resources to the foreground app and reduce resources for the one in the background.  If your OS isn't doing that, there's something wrong in your system somewhere.

Mike
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Anthony
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« Reply #4 on: November 23, 2010, 11:33:09 AM »
Quote from: Mike Chaney on November 22, 2010, 01:45:31 PM
If your OS isn't doing that, there's something wrong in your system somewhere.

That is very depressing! There's nothing tailor-made about my system: Windows 7 / 64 bit, fairly recently installed (clean install, not an upgrade). Given what Fred said, maybe I should examine Sophos AV. Thank you all for the advice

Best
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Owen Glendower
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« Reply #5 on: November 23, 2010, 06:38:25 PM »
I've had similar problems with AV programs which were set up to scan every file operation.  I've also had more than one computer bogged down by HP software.  Please let us know what you find out.
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Box Brownie
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« Reply #6 on: November 24, 2010, 11:51:16 PM »
Hi

I thought all AV programs had settings whereby you can tell it not to scan changes to particular file types, folders, executables etc  Especially usefull where a program uses a cache file that is changing with every action the program takes.

Make sure to do that and see if that helps......IMO it should not be necessary to pause or turn off AV and anyway some AV progs even if 'turned off' could still have a TSR operation running in the background that may just impact on the performance because of the lack of the filtering I mention.
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Anthony
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« Reply #7 on: November 28, 2010, 11:00:11 AM »
The problem is AV independent but seems to be limited to Microsoft Access, particularly if you double click on an accdb file; it's slightly better if you open Access and then browse to the file. As my photo processing involves several different Access files, this is a problem. Is there a way of pausing QU processing, rather than cancelling it?
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