Re: Severe I/O performance regression 2.6.6 to 2.6.7 or 2.6.8-rc3

[Helge Hafting]

William Lee Irwin III wrote:

> At some point in the past, I wrote:
>
> > -r+ -d:KEY: > key-bk$X" when it creates the tarball.  Then anyone can
> > "bk clone -r`cat key-bk7` linux-2.5 linux-2.6-bk7" and duplicate the
> > -bk7 state of the tree, and then "bk changes -L ../linux-2.6-bk6" to
> > find the list of changesets differing.
> >    
>
> Once we get there, there must be some way to construct intermediate
> points between those two faithful at the very least to the snapshot
> ordering if not true chronological ordering.
>  
You don't really need chronology for a binary search.  With a
list of changesets, just apply/back out half of them.  Divide the lot
any way you like, perhaps starting with only the "suspected" ones.

Helge Hafting
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