Side thought: This issue has likely been addressed by business-grade disk optimization routines which, in the 80s, had to consider the possibility of a full or nearly-full disk and still function.

Might a bit of historical research on defrag utilities and algorithms possibly turn up some inspirational insight?

In reply to Re: [OT] A measure of 'sortedness'? by marinersk
in thread [OT] A measure of 'sortedness'? by BrowserUk

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