Github user theburge commented on the issue:
Thanks for doing the additional investigation @jaydoane. I'm glad the
performance remains consistently improved.
From memory, I've observed deeply buried headers frequently in MT, although
admittedly not lots at once (usually a DB or two). However, they're not only on
.meta files if memory serves, but also on view files (and I'm fairly sure on
primary database files, although IIRC usually in correlation with some other
odd behaviour -- so perhaps it shouldn't be considered _normal_ but it's
In any case, it's reassuring that the vectored approach is only tried if
the basic approach fails, given the striking difference in page-in rate.
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