Set L2 blocktime > L1 blocktime #189
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Issue DescriptionI researching in optimism rollup node: I want to set block time L2 > L1 block time in my network. I stuck in batches deriving in rollup node, many epochs checks fails (err: random field does not match as the result of L1 block attributes shifting in L2 block producing). L2 network make many reorgs with failed checks . Are there developers who try to did it? I will be happy to read any experience in this way. Thanks in advance. Additional InformationNo response FeedbackNo response |
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Replies: 5 comments 4 replies
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The assumption is that the rollup block time is less than the L1 block time and is a whole number. Can you tell me more about why you're trying to implement a higher block time? Additionally: span batches |
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in order to save traffic in batches |
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Instead of increasing the block time, have you considered the option of reducing the block size? |
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Do you mean batcher compression ration flag --approx-compr-ratio? |
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If the goal is to save (reduce) traffic, then reducing the block size would likely achieve that purpose, I was just thinking. |
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Hey @dim4egster, We hope your recent question was resolved to your satisfaction. Your feedback is invaluable and helps us improve our support services. Could you spare a moment to fill out a short feedback survey. Thank you for helping us improve our developer community. |
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Hey @dim4egster, We hope your recent question was resolved to your satisfaction. Your feedback is invaluable and helps us improve our support services. Could you spare a moment to fill out a short feedback survey. Thank you for helping us improve our developer community. |
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I researched the code. This ability requires a lot of work: changes to batch derivation process, some parent->child checks will become not actual and the L1 deposits processing logic needs to be changed. |
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Thanks everyone for the answers! |
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The assumption is that the rollup block time is less than the L1 block time and is a whole number. Can you tell me more about why you're trying to implement a higher block time?
Additionally: span batches
might be what you're looking for. This feature is currently supported on testnets and will land on mainnet if this proposal passes.
edit: added span batches spec