D-LAN

On Windows the download rate may rise then suddenly fall. It may be related to the system cache which can be deactivated in the hard drive properties page.

• Try to check is some more options can be used when a file is opened or written : https://github.com/Ummon/D-LAN/blob/master/application/Core/FileManager/priv/Cache/File.cpp#L278
  • There is some interesting options here (like FILE_FLAG_NO_BUFFERING): http://msdn.microsoft.com/en-us/library/windows/desktop/aa363858%28v=vs.85%29.aspx
  • Official documentation about file buffering : http://msdn.microsoft.com/en-us/library/windows/desktop/cc644950%28v=vs.85%29.aspx
  • Article about system buffering: http://nasutechtips.blogspot.fr/2010/09/fileflagnobuffering-and-file-readwrite.html
• Look if the Qt layer is optimal and can be replaced by ours.