copying files (speed)

Johnny Rosenberg gurus.knugum at gmail.com
Sun May 17 09:30:00 UTC 2009


2009/5/17 Rick <rick0009 at gmail.com>:
> Well, just got a shock ... copying folder with over 3.GB of small
> files...to a external usb NTFS drive... a blazing 1.4 MB/s ???
>
> Okay, coming from Windows got around 28 MB/s,
> Anyone on this... on why copy function is way SLOW?
>
> Do, I need to adjust some setting?
> or format the external hard drive using a different format,
> other than NTFS
>
>
>
> Thank You !
> Rick
>
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Maybe your OS thinks that your USB port is USB 1 rather than USB 2?

Anyway, I don't know but I made my own test. I copied a folder to my
external USB disk like this:
time cp -R Media/ /media/Backup/

/media/Backup/ is the USB disk, of course, and /Media is actually
~/Eget/Media and it contains 8273 objects (pictures, videos and things
like that) which have a total size of 18.9 GiB.

It took 17:20 to complete this task, so I opened Calc (a command line
calculator) and entered this:
18.9*1024/(17*60+20)
The result was this:
~18.60923076923076923077
(The ~ means ”approximately”, and it always shows it when the result
has more decimals than shown, so don't worry about it…)
So in my case, 18.6 MiB/s, which is a lot more than 1.4 MiB/s, however
not as much as 28 MiB/s. Many objects will decrease average speed, but
I don't have a clue how many files you have in your 3 GB folder, and
our hardware aren't hte same either, probably.

But something seems to be wrong with your system, at least.

J.R.




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