[R4R]prefetch state by applying the transactions within one block #704
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unclezoro
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unclezoro
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yutianwu
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Jan 10, 2022
yutianwu
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yutianwu
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j75689
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j75689
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keefel
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core/state_prefetcher.go
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| @@ -35,42 +36,60 @@ type statePrefetcher struct { | |||
| engine consensus.Engine // Consensus engine used for block rewards | |||
| } | |||
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| // newStatePrefetcher initialises a new statePrefetcher. | |||
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Should be NewStatePrefetcher
keefel
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Jan 10, 2022
fix ut
This was referenced Jan 23, 2022
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unclezoro
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Feb 17, 2022
* prefetch state by apply transactions within one block * resolve comments * stop prefetch once process is done * update comments fix ut
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…b-chain#704) * prefetch state by apply transactions within one block * resolve comments * stop prefetch once process is done * update comments fix ut
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Description
By improving the snapshot clean cache hit rate, we can improve the capacity of BSC further.
Rationale
According to the test, the cache hitting rate on BSC is about 94%, while the miss 6% IO will cost 32% of execution time.
We try to preload the state from DB by applying the transactions in advance. It turns out the execution time was reduced by 30%-40%
Example
Verified on testnet and mainnet.
Changes
No impact to users