Calculating Estimated time?

[Lars Netzel]

Hello!

I have a number of files to copy. I have to total Amount of files and the
Total FileSize of this operation (for example 3453 files, 4065.4 Mb)... How
can I calculate how much time this will take so the user have an Idea of how
much time it will take to copy? This will also be something to base a
progressbar on.

regards
/Lars

[One Handed Man \( OHM - Terry Burns \)]

Low long is a peice of string ?

This will depend on the server the files are being copied from and to, the
speed of the network, how congested it is.

As a rule of thum, measure the time for a 5GB file transfer on a busy day
and use that as a guide.

Regards

--

OHM ( Terry Burns )
. . . One-Handed-Man . . .

Time flies when you don't know what you're doing

"Lars Netzel" <no****@no.no> wrote in message
news:uV**************@tk2msftngp13.phx.gbl...

Hello!

I have a number of files to copy. I have to total Amount of files and the
Total FileSize of this operation (for example 3453 files, 4065.4 Mb)... How can I calculate how much time this will take so the user have an Idea of how much time it will take to copy? This will also be something to base a
progressbar on.

regards
/Lars

[Herfried K. Wagner [MVP]]

* "Lars Netzel" <no****@no.no> scripsit:

I have a number of files to copy. I have to total Amount of files and the
Total FileSize of this operation (for example 3453 files, 4065.4 Mb)... How
can I calculate how much time this will take so the user have an Idea of how
much time it will take to copy? This will also be something to base a
progressbar on.

IMO, that's not as easy. Windows provides this information and it's (at
least on my machine) always not accurate. When copying from HDD to HDD,
speed strongly depends on how fragmented the files are, so there is no
constant copying speed. You could, for example, calculate the current
time needed to copy 1 MB and then calculate how long the rest will take,
but if the copying speed decreases, the result can change quickly.

--
Herfried K. Wagner [MVP]
<URL:http://dotnet.mvps.org/>

[Jay B. Harlow [MVP - Outlook]]

Lars,
In addition to the others comments, I would use a "sliding" average...

I would start assuming I am copying x bytes/minute and display the estimated
time based on that.

For each y KB I copy I would time how long those KB took, giving me a new x
bytes/minute, allowing me to display a new estimated time based on the new x
bytes/minute...

Hope this helps
Jay

"Lars Netzel" <no****@no.no> wrote in message
news:uV**************@tk2msftngp13.phx.gbl...

Hello!

I have a number of files to copy. I have to total Amount of files and the
Total FileSize of this operation (for example 3453 files, 4065.4 Mb)... How can I calculate how much time this will take so the user have an Idea of how much time it will take to copy? This will also be something to base a
progressbar on.

regards
/Lars

[Lars Netzel]

yeah, that makes sence!

Thanx
/Lars

"Jay B. Harlow [MVP - Outlook]" <Ja************@msn.com> skrev i meddelandet
news:eZ**************@TK2MSFTNGP12.phx.gbl...

Lars,
In addition to the others comments, I would use a "sliding" average...

I would start assuming I am copying x bytes/minute and display the estimated time based on that.

For each y KB I copy I would time how long those KB took, giving me a new x bytes/minute, allowing me to display a new estimated time based on the new x bytes/minute...

Hope this helps
Jay

"Lars Netzel" <no****@no.no> wrote in message
news:uV**************@tk2msftngp13.phx.gbl...

Hello!

I have a number of files to copy. I have to total Amount of files and the Total FileSize of this operation (for example 3453 files, 4065.4 Mb)...

How

can I calculate how much time this will take so the user have an Idea of

how

much time it will take to copy? This will also be something to base a
progressbar on.

regards
/Lars

[tanuki]

sorry for my stupidity but isn't it just a simple case of

speed=distance/time
thus
speed = totalfilesize/time

or sumthing

and then as you copy more bites you modify the formula

speed=(totalbytescopied)/(totaltimeittooksofar)

i don't know if this will work correctly but it will definitly vary between
say
a gig of small files, a one gig file and say 12 files comprising 1 gig in
total


"Lars Netzel" <no****@no.no> wrote in message
news:ek**************@TK2MSFTNGP09.phx.gbl...

yeah, that makes sence!

Thanx
/Lars

"Jay B. Harlow [MVP - Outlook]" <Ja************@msn.com> skrev i meddelandet news:eZ**************@TK2MSFTNGP12.phx.gbl...

Lars,
In addition to the others comments, I would use a "sliding" average...

I would start assuming I am copying x bytes/minute and display the estimated

time based on that.

For each y KB I copy I would time how long those KB took, giving me a new x

bytes/minute, allowing me to display a new estimated time based on the new

x

bytes/minute...

Hope this helps
Jay

"Lars Netzel" <no****@no.no> wrote in message
news:uV**************@tk2msftngp13.phx.gbl...

Hello!

I have a number of files to copy. I have to total Amount of files and

the Total FileSize of this operation (for example 3453 files, 4065.4

Mb)... How

can I calculate how much time this will take so the user have an Idea

of how

much time it will take to copy? This will also be something to base a
progressbar on.

regards
/Lars