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Defect #239

Updated by Greg Burri over 10 years ago

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 
 * Look if the Qt layer is optimal and can be replaced by ours.

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