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XR 9k route-policy impact question

All, 

I have a simple route-policy I'd like to apply to a set of peers.
This would be applied to 25k prefixes in the bgp table.
Given no ios-regex is being used in the route-policy, I'm looking for any expertise on potential impact/load on the system. I'm assuming this all needs to happen in the RSP CPU.


route-policy rewriteAS
replace as-path all auto 2
end-policy
!
route-policy Med2Prepend
if (med is 34) then
     prepend as-path own-as 5
else
   done
endif
end-policy

neighbor-group blabla
address-family ipv4 unicast
route-policy Med2Prepend in
route-policy rewriteAS out
next-hop-self

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