📨Messaging Latency and Cost
Messaging
The Rollup allows for seamless communication with Layer 1, enabling the transmission of arbitrary messages.
Each protocol ensures the verifiable transfer of data to the intended chain.
Latency from L1 to L2:
This refers to the duration required for a message to become accessible on the Rollup once it's included in an Ethereum block.
Cost from L1 to L2:
The expense involved in sending a message from Ethereum to the Layer 2 Rollup.
The Rollup processes the message using a system address, acting on behalf of the original sender from Layer 1.
The sender on Layer 1 bears the cost of Layer 2 gas for message execution.
Latency from L2 to L1:
This is the time taken for a message to be available on Ethereum after it’s recorded in a Rollup block and sequenced to Layer 1.
Cost from L2 to L1:
The gas expense incurred for the verification and initiation of message execution on Ethereum, following its dispatch from the Rollup.
This cost is covered by the Externally Owned Account (EOA) that triggers the claim transaction on Layer 1.
It's important to note that this cost does not include the expenses arising from the operations performed as a result of the message.
L1 → L2 Latency
~1 minute
~1 minute
~17min
~6-9 minutes
~6-8 minutes
~2 minutes
L1 → L2 Cost
~38 000 L1 gas
~43 000 L1 gas
~66 000 L1 gas + ~71 000 L2 gas (in case of manual delivery)
No added cost
95000 L2 gas
No added cost
L2 → L1 Latency
7 days
7 days
8 to 32 hours
7 days
~1 hour
-
L2 → L1 Cost
600 000 L1 gas
600 000 L1 gas
~73 000 L2 gas*
60 000 L1 gas
95000 L1 gas
-
*On Linea
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