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Windows 7: File Speed

25 Dec 2010   #1
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 
File Speed

Something that I have been curious about for a while, is that just about anytime that I move or encode a file, it always starts off at it's highest speed, then drops off somewhat as the operation progresses.

I somewhat understand this, when it comes to a download, but not when dealing with a file locally, because neither the source or destination location has any space restrictions to slow it down. It appears that this is just the nature of the beast, but I'm wondering if there is any way to tame it?


My System SpecsSystem Spec
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25 Dec 2010   #2
zigzag3143

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by seekermeister View Post
Something that I have been curious about for a while, is that just about anytime that I move or encode a file, it always starts off at it's highest speed, then drops off somewhat as the operation progresses.

I somewhat understand this, when it comes to a download, but not when dealing with a file locally, because neither the source or destination location has any space restrictions to slow it down. It appears that this is just the nature of the beast, but I'm wondering if there is any way to tame it?
Generally speaking it isnt the network that is going to throttle a file process or transfer. It can be the read write of the HD, the amount of cpu cycles it uses, or the amount of ram you have.

It is normal to start off fast and when the buffer fills up to slow down to the buffer speed.

Ken J
My System SpecsSystem Spec
25 Dec 2010   #3
Maxxwire

Windows 7 x64 Home Premium
 
 

Also interesting to note is that when transferring larger files like this 3 GB video file my Win 7 x64 computer uses over 1 GB of RAM during the transfer.

~Maxx~


Attached Images
File Speed-ram-usages.png 
My System SpecsSystem Spec
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26 Dec 2010   #4
logicearth

Windows 10 Pro (x64)
 
 

Hard drives work in bursts, you never get constant speeds, goes fast, then slow. And long I/O jobs always slow down because they are always expensive. The hard drive can only write so fast and the buffer is only so big. So many variables. So can you tame it? Yes. Use a solid-state drive.
My System SpecsSystem Spec
26 Dec 2010   #5
seekermeister

W7x64 Pro, SuSe 12.1/** W7 x64 Pro, XP MCE
 
 

The hard drive that I'm targeting the file transfer to has a 64MB cache, and the activity light on it barely indicates any activity...just an occasional blink. So I doubt that it is the problem.

From what I could tell from the Task Manager's Performance tab, it doesn't appear that the memory is being used up. The only thing that nears capacity is the CPU, but that is the case whether the transfer is fast or slow, so I'm still not sure what is going on.

The only thing that I found to make a marked difference, is to disable the real time protection and malware scans of my firewall/AV, but that doesn't seem to account for all variations.


Attached Images
File Speed-task-manager.png 
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