Nodes (Quicknode, own AWS light node, public node) about uniswap-arbitrage-flash-swap HOT 8 CLOSED

Ok, I managed to deploy my own node with 20ms in the US East region. I updated the code as well.

The bsc push NewBlockHead timestamp is seconds, how to measure the node delay using milliseconds? Like you say 20ms.

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you had better have another measuring about the time intervals between your NewBlockHead data's timestamp and the raw startfunction transaction is mined by validator nodes. Even if you optimize the execution time of check function < 10ms, there also are so much fails. If you look into this fail transaction, you'll find that the transaction block number often fall behind NewBlockHead data block number 1~3 blocks.

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simply use all all of them

• for light client you can pick every vserver < 2 USD / EUR; latency ~500ms, there is no need for bigger hardware. its still the fastest as new blocks are getting here at first
• quicknode, chainstack have lowest latency of execution < 100ms, but getting notified later for new blocks
• region: german / usa for hosting

i am never running into "e00: out of block" every transaction only takes 1-2 blocks. you can higher the "block.number + 2", but normally its too late.

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.... and feel free to remove estimateGas and replace it with a fixed value. this line takes normally its time ;)

estimateGas = await tx.estimateGas({from: admin});

vs

let estimateGas = 519540;

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@Haehnchen you say "...you can higher the "block.number + 2", but normally its too late" in this code in file watcher.js at line 106 is "block.number + 2", you make modification out of this public repository? you can share? tks

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Ok, I managed to deploy my own node with 20ms in the US East region. I updated the code as well.

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NewBlockHead

we measure the request time, i.e. how long it takes to fetch data from your node.

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there are 2 parts of measuring

• connect to multiple websocket providers listen for "NewBlockHead", you will notice some nodes are getting new blocks faster
• then execute the checks

so basically the calculation would be "first knowledge of the new block" + "execution time"

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