Editing 612: Estimation
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The reason why this happens is because Windows calculates the estimate purely based on the current transfer rate, which if we were to continue with the car scenario put forth by Randall, is like giving an ETA based on the speed the car is currently at with no consideration of the future, such as traffic lgihts, traffic jams, or expressways. Transferring files are limited by various factors such as how fast the files can be read, how quickly the disk can be written to, and even the size of each file themselves (think the difference between carrying a large box versus having to carry a hundred miscellaneous items). | The reason why this happens is because Windows calculates the estimate purely based on the current transfer rate, which if we were to continue with the car scenario put forth by Randall, is like giving an ETA based on the speed the car is currently at with no consideration of the future, such as traffic lgihts, traffic jams, or expressways. Transferring files are limited by various factors such as how fast the files can be read, how quickly the disk can be written to, and even the size of each file themselves (think the difference between carrying a large box versus having to carry a hundred miscellaneous items). | ||
| β | A better implementation would keep track of the average file transfer rate over the entire operation, which would even out the bumps and give a more accurate estimate. Windows 8 | + | A better implementation would keep track of the average file transfer rate over the entire operation, which would even out the bumps and give a more accurate estimate. Windows 8 solves the problem by doing away with the time estimate. |
The title text refers to the fact that if the connection is lost, and data can no longer be transmitted, the estimation just gets larger and larger as time goes on rather than realizing that no data being sent means there is no connection. This is a behavior that occurs on {{w|Microsoft}} network connections even when the connection is not lost. Kubuntu avoids this problem, but not that of wide fluctuations, by including only the past few seconds in its estimate. If there has been zero progress within the averaging interval, it reports "Stalled". | The title text refers to the fact that if the connection is lost, and data can no longer be transmitted, the estimation just gets larger and larger as time goes on rather than realizing that no data being sent means there is no connection. This is a behavior that occurs on {{w|Microsoft}} network connections even when the connection is not lost. Kubuntu avoids this problem, but not that of wide fluctuations, by including only the past few seconds in its estimate. If there has been zero progress within the averaging interval, it reports "Stalled". | ||
