Transfer time estimate

Collapse
This topic is closed.
X
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Christophe F. [MS]
    #1

    Transfer time estimate

    Hello,
    I'm looking for sample code in C# that will estimate the transfer time for a
    file between two machines (taking into account bandwidth and latency).
    --
    Regards,
    CF


    Tags: None
    • Nicholas Paldino [.NET/C# MVP]
      #2
      Re: Transfer time estimate

      Christophe,

      You can't really do that unless you are in the process of sending the
      file. The best you can do is make estimates on each side of the process.

      When you begin to sending/receive, store the time. As you send/receive
      each group of bytes, you take note of the elapsed time (the current time
      minus the start time). Divide that by the number of bytes sent/received to
      determine how long it takes to send one byte. Then, multiply that ratio by
      the number of bytes left, and you will have the approximate time left to
      perform the transfer.

      Hope this helps.


      --
      - Nicholas Paldino [.NET/C# MVP]
      - mvp@spam.guard. caspershouse.co m

      "Christophe F. [MS]" <chrisfie@onlin e.microsoft.com > wrote in message
      news:e7mlf3rZFH A.3488@tk2msftn gp13.phx.gbl...[color=blue]
      > Hello,
      > I'm looking for sample code in C# that will estimate the transfer time for
      > a file between two machines (taking into account bandwidth and latency).
      > --
      > Regards,
      > CF
      >[/color]


        Comment

        • Christophe F. [MS]
          #3
          Re: Transfer time estimate

          Thank you Nicholas, I guess I should not use the File.Copy method to
          transfer file then, but file streaming?

          "Nicholas Paldino [.NET/C# MVP]" <mvp@spam.guard .caspershouse.c om> wrote in
          message news:uZlNo%23rZ FHA.1456@TK2MSF TNGP15.phx.gbl. ..[color=blue]
          > Christophe,
          >
          > You can't really do that unless you are in the process of sending the
          > file. The best you can do is make estimates on each side of the process.
          >
          > When you begin to sending/receive, store the time. As you send/receive
          > each group of bytes, you take note of the elapsed time (the current time
          > minus the start time). Divide that by the number of bytes sent/received
          > to determine how long it takes to send one byte. Then, multiply that
          > ratio by the number of bytes left, and you will have the approximate time
          > left to perform the transfer.
          >
          > Hope this helps.
          >
          >
          > --
          > - Nicholas Paldino [.NET/C# MVP]
          > - mvp@spam.guard. caspershouse.co m
          >
          > "Christophe F. [MS]" <chrisfie@onlin e.microsoft.com > wrote in message
          > news:e7mlf3rZFH A.3488@tk2msftn gp13.phx.gbl...[color=green]
          >> Hello,
          >> I'm looking for sample code in C# that will estimate the transfer time
          >> for a file between two machines (taking into account bandwidth and
          >> latency).
          >> --
          >> Regards,
          >> CF
          >>[/color]
          >
          >[/color]


            Comment

            • Nicholas Paldino [.NET/C# MVP]
              #4
              Re: Transfer time estimate

              Christophe,

              If you want to have the ability to perform these calculations as the
              copy takes place, then yes.

              You might also be able to do the same thing with a call to the
              SHFileOperation function through the P/Invoke layer. I believe it will
              allow you to specify a callback which is called during the operation.

              Hope this helps.


              --
              - Nicholas Paldino [.NET/C# MVP]
              - mvp@spam.guard. caspershouse.co m

              "Christophe F. [MS]" <chrisfie@onlin e.microsoft.com > wrote in message
              news:OSWLtUsZFH A.2076@TK2MSFTN GP15.phx.gbl...[color=blue]
              > Thank you Nicholas, I guess I should not use the File.Copy method to
              > transfer file then, but file streaming?
              >
              > "Nicholas Paldino [.NET/C# MVP]" <mvp@spam.guard .caspershouse.c om> wrote
              > in message news:uZlNo%23rZ FHA.1456@TK2MSF TNGP15.phx.gbl. ..[color=green]
              >> Christophe,
              >>
              >> You can't really do that unless you are in the process of sending the
              >> file. The best you can do is make estimates on each side of the process.
              >>
              >> When you begin to sending/receive, store the time. As you
              >> send/receive each group of bytes, you take note of the elapsed time (the
              >> current time minus the start time). Divide that by the number of bytes
              >> sent/received to determine how long it takes to send one byte. Then,
              >> multiply that ratio by the number of bytes left, and you will have the
              >> approximate time left to perform the transfer.
              >>
              >> Hope this helps.
              >>
              >>
              >> --
              >> - Nicholas Paldino [.NET/C# MVP]
              >> - mvp@spam.guard. caspershouse.co m
              >>
              >> "Christophe F. [MS]" <chrisfie@onlin e.microsoft.com > wrote in message
              >> news:e7mlf3rZFH A.3488@tk2msftn gp13.phx.gbl...[color=darkred]
              >>> Hello,
              >>> I'm looking for sample code in C# that will estimate the transfer time
              >>> for a file between two machines (taking into account bandwidth and
              >>> latency).
              >>> --
              >>> Regards,
              >>> CF
              >>>[/color]
              >>
              >>[/color]
              >
              >[/color]


                Comment

                • Christophe F. [MS]
                  #5
                  Re: Transfer time estimate

                  Great, I got this exemple to work:
                  http://www.thecodeproject.com/csharp/csdoesshell2.asp?



                  --
                  --
                  Cdt,
                  CF
                  "Nicholas Paldino [.NET/C# MVP]" <mvp@spam.guard .caspershouse.c om> wrote in
                  message news:%23GDSwgsZ FHA.3328@TK2MSF TNGP09.phx.gbl. ..[color=blue]
                  > Christophe,
                  >
                  > If you want to have the ability to perform these calculations as the
                  > copy takes place, then yes.
                  >
                  > You might also be able to do the same thing with a call to the
                  > SHFileOperation function through the P/Invoke layer. I believe it will
                  > allow you to specify a callback which is called during the operation.
                  >
                  > Hope this helps.
                  >
                  >
                  > --
                  > - Nicholas Paldino [.NET/C# MVP]
                  > - mvp@spam.guard. caspershouse.co m
                  >
                  > "Christophe F. [MS]" <chrisfie@onlin e.microsoft.com > wrote in message
                  > news:OSWLtUsZFH A.2076@TK2MSFTN GP15.phx.gbl...[color=green]
                  >> Thank you Nicholas, I guess I should not use the File.Copy method to
                  >> transfer file then, but file streaming?
                  >>
                  >> "Nicholas Paldino [.NET/C# MVP]" <mvp@spam.guard .caspershouse.c om> wrote
                  >> in message news:uZlNo%23rZ FHA.1456@TK2MSF TNGP15.phx.gbl. ..[color=darkred]
                  >>> Christophe,
                  >>>
                  >>> You can't really do that unless you are in the process of sending the
                  >>> file. The best you can do is make estimates on each side of the
                  >>> process.
                  >>>
                  >>> When you begin to sending/receive, store the time. As you
                  >>> send/receive each group of bytes, you take note of the elapsed time (the
                  >>> current time minus the start time). Divide that by the number of bytes
                  >>> sent/received to determine how long it takes to send one byte. Then,
                  >>> multiply that ratio by the number of bytes left, and you will have the
                  >>> approximate time left to perform the transfer.
                  >>>
                  >>> Hope this helps.
                  >>>
                  >>>
                  >>> --
                  >>> - Nicholas Paldino [.NET/C# MVP]
                  >>> - mvp@spam.guard. caspershouse.co m
                  >>>
                  >>> "Christophe F. [MS]" <chrisfie@onlin e.microsoft.com > wrote in message
                  >>> news:e7mlf3rZFH A.3488@tk2msftn gp13.phx.gbl...
                  >>>> Hello,
                  >>>> I'm looking for sample code in C# that will estimate the transfer time
                  >>>> for a file between two machines (taking into account bandwidth and
                  >>>> latency).
                  >>>> --
                  >>>> Regards,
                  >>>> CF
                  >>>>
                  >>>
                  >>>[/color]
                  >>
                  >>[/color]
                  >
                  >[/color]


                    Comment

                    Previous template Next
                    Working...