SDU and standby log shipping

Speaking of the SDU parameters, has anyone here seen tangible benefits from
increasing the SDU for shipping redo from the primary database to a
standby?  Our specific environment:

Windows 2003
Oracle w/DataGuard
Logical standby geographically separate from the primary
Primary in maximum performance mode

The other day we had a situation where redo was being generated so quickly
on the primary that not all of it got shipped to the standby.  I was
wondering if a large SDU could alleviate this type of problem in the future.

Jason Heinrich

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