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Posted

Are the write rates sometimes an estimate?  I ask because of this line in a log:

 

 

I 14:15:58 Operation Successfully Completed! - Duration: 00:00:19
I 14:15:58 Average Write Rate: 117,261 KiB/s (86.7x) - Maximum Write Rate: 117,261 KiB/s (86.7x)
 

 

Notice how the Average and the Maximum Write Rates are the same.  The odd thing is I actually watched the write to HDD image and it said at some point it was writing at 155x!  :o 

 

 

So, I don't know why the Maximum Write Rate isn't 155.  :unsure:

Posted

Not what I'd call estimates, no. They're all based on the amount of data being read/written over a period of time.

 

They're averaged sometimes though (over a period of a few seconds etc) and there's code in place to try and reduce/ignore massive spikes where the cache/buffering is doing all of the hard work and it isn't a true read/write rate.

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