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Questionfree proxy server Pin
vpilu123-Jul-07 20:02
vpilu123-Jul-07 20:02 
AnswerRe: free proxy server Pin
Jonathan [Darka]23-Jul-07 21:24
professionalJonathan [Darka]23-Jul-07 21:24 
AnswerRe: free proxy server Pin
Sebastian Schneider23-Jul-07 21:51
Sebastian Schneider23-Jul-07 21:51 
GeneralRe: free proxy server Pin
Zoltan Balazs24-Jul-07 10:57
Zoltan Balazs24-Jul-07 10:57 
QuestionCPU usage during File Transfer Pin
KKrista22-Jul-07 22:56
KKrista22-Jul-07 22:56 
AnswerRe: CPU usage during File Transfer Pin
Sebastian Schneider22-Jul-07 23:16
Sebastian Schneider22-Jul-07 23:16 
GeneralRe: CPU usage during File Transfer Pin
KKrista23-Jul-07 0:51
KKrista23-Jul-07 0:51 
AnswerRe: CPU usage during File Transfer Pin
Mike Dimmick23-Jul-07 0:33
Mike Dimmick23-Jul-07 0:33 
That sounds like one of the disks is in Programmed I/O (PIO) mode rather than Direct Memory Access (DMA). In DMA mode, the OS sends a command to the disk to start a read operation which contains a physical memory address to copy the data to. The disk accepts this request and the OS blocks the thread, then carries on with something else (or halts the processor if there are no threads to run). The disk then borrows bus cycles to copy the data directly into memory; when done, it interrupts the processor to signal that the transfer is complete. Writes are much the same, in the other direction.

In programmed I/O mode, however, the CPU is much more involved: the driver has to write the data directly to the disk controller, then polls a register on the controller, in a tight loop, to find out when it's done. If this is what's going on, you'll see a lot of CPU usage in the System process in Task Manager.

Your anti-virus package may also be consuming a lot of CPU. See if the CPU usage goes down if you disable the resident part of the antivirus.

Otherwise I can't see why there would be a lot of CPU usage just copying a file.

Stability. What an interesting concept. -- Chris Maunder

AnswerRe: CPU usage during File Transfer Pin
Craster23-Jul-07 5:37
Craster23-Jul-07 5:37 
QuestionSuggestions for slow internet Pin
Kevnar22-Jul-07 6:37
Kevnar22-Jul-07 6:37 
AnswerRe: Suggestions for slow internet Pin
Paul Conrad22-Jul-07 6:52
professionalPaul Conrad22-Jul-07 6:52 
GeneralRe: Suggestions for slow internet Pin
Kevnar22-Jul-07 7:37
Kevnar22-Jul-07 7:37 
GeneralRe: Suggestions for slow internet Pin
Paul Conrad22-Jul-07 7:39
professionalPaul Conrad22-Jul-07 7:39 
GeneralRe: Suggestions for slow internet Pin
Kevnar22-Jul-07 9:08
Kevnar22-Jul-07 9:08 
GeneralRe: Suggestions for slow internet Pin
Paul Conrad22-Jul-07 9:27
professionalPaul Conrad22-Jul-07 9:27 
GeneralRe: Suggestions for slow internet Pin
Vasudevan Deepak Kumar23-Jul-07 5:01
Vasudevan Deepak Kumar23-Jul-07 5:01 
GeneralRe: Suggestions for slow internet Pin
Luc Pattyn22-Jul-07 9:46
sitebuilderLuc Pattyn22-Jul-07 9:46 
AnswerRe: Suggestions for slow internet Pin
Vasudevan Deepak Kumar23-Jul-07 4:32
Vasudevan Deepak Kumar23-Jul-07 4:32 
AnswerRe: Suggestions for slow internet Pin
ThaScorpion25-Jul-07 5:51
ThaScorpion25-Jul-07 5:51 
QuestionmidiOutGetNumDev() error in Windows XP Pin
vanchan5021-Jul-07 7:14
vanchan5021-Jul-07 7:14 
QuestionDriver blocked from loading on Windows 2003 Pin
Zoltan Balazs20-Jul-07 11:24
Zoltan Balazs20-Jul-07 11:24 
AnswerRe: Driver blocked from loading on Windows 2003 Pin
Sebastian Schneider22-Jul-07 22:02
Sebastian Schneider22-Jul-07 22:02 
QuestionIP adresses Pin
Shivaprasad D Atthigode19-Jul-07 23:59
Shivaprasad D Atthigode19-Jul-07 23:59 
AnswerRe: IP adresses Pin
Sebastian Schneider20-Jul-07 2:03
Sebastian Schneider20-Jul-07 2:03 
AnswerRe: IP adresses Pin
Shouvik Das25-Jul-07 21:13
Shouvik Das25-Jul-07 21:13 

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