ATM vs. PPP encapsulation latency (OT)

From: Jersey Guy (guy.jersey@gmail.com)
Date: Thu Feb 26 2009 - 13:11:13 ARST

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Hello All,
We recently changed our edge router's WAN interface to the service provider,
from ATM to PPP. After doing this, latency to our SmokePing server went up
by 10ms. Nothing else was changed.

Is it documented anywhere that while PPP is more "efficient" than ATM, it
adds some latency? Looking for some pointers...

TIA, JG

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