feat(price_pusher/solana): use an Address Lookup Table to reduce number of txs #2396
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tejasbadadare
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guibescos
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target_chains/solana/sdk/js/pyth_solana_receiver/src/PythSolanaReceiver.ts
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| * This way, the packing of the instructions to post an encoded vaa is more efficient. | ||
| */ | ||
| export const VAA_SPLIT_INDEX = 755; | ||
| export const VAA_SPLIT_INDEX = 700; |
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this doesn't seem tight
i think you can go up to 737
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highest i could get it to is 721, not sure where the extra space is coming from
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target_chains/solana/sdk/js/pyth_solana_receiver/examples/update_price_feed.ts
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you can also add the guardians account to the LTA |
guibescos
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thank you! let's bump the pusher and deploy
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Purpose
Recently our merkle proof size grew due to newly added feeds. This caused two
postUpdateixs to no longer fit inside a single tx. This resulted in us needing to use more transactions to land our updates, which means increased operational costs of running the price pusher.This PR uses Address Lookup Tables to save space in order to fit 2 postUpdate ixs in a single tx again.
ALT details
The following accounts are static and are indexed in the ALT:
rec5EKMGg6MxZYaMdyBfgwp4d5rB9T1VQH5pJv5LtFJ
GakrHE9QQeeJKoZ6oww9qzJZrzXY7C1jZdVfpYHc6KSz
DaWUKXCyXsnzcvLUyeJRWou8KTn7XtadgTsdhJ6RHS7b
HDwcJBJXjL9FpJ7UBsYBtaDjsBUhuLCUYoz3zr8SWWaQ
The following ALTs have been created, owned by our SVM deployer key:
Pusher/SDK details
--address-lookup-table-accountargument to the pusher to enable using an ALT. This should enable us to set a--updates-per-jito-bundlevalue of 6 (back from 4).addressLookupTablector arg inpythSolanaReceiver.newTransactionBuilderso that any client can use an ALT.--treasury-idargument to the pusher and the receiver SDK to be able to use a stable treasury account. The treasury account with id 0 is indexed in the ALTs above.VAA_SPLIT_INDEXto 700 from 750 to make space for the ALT. Without this change, the first part of the VAA doesn't fit in the first tx.Testing
--updates-per-jito-bundle 6with the ALT. First tx of the bundle: https://solscan.io/tx/4QEj9GkNUJ2HMwoqKA9KZDkB1r3SR6KWCuViNEmnCyPAyXZAiKA9P7m4CRVba3UBTs9w7oPPcjxZYhxiwcvKdtQ8