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To reply the query I consider you’ve gotten:
“Progress enhance per hour: 0.25%” signifies that 0.25% of the blockchain is synchronized per hour, or that whole from-scratch synchronization (assuming the present price is fixed) takes 100%/0.25% = 400 hours.
It does not imply that the velocity of synchronization is growing over time. Normally, it is going to go down.
To reply your query as phrased:
There are a lot of the reason why the progress price wouldn’t be fixed. The progress share is the ratio between the overall variety of validated transactions divided by an estimate of the overall variety of transactions within the chain, however:
- Not each transaction is equally advanced, and the make-up of typical transactions has modified throughout Bitcoin’s lifetime.
- Signature validation is simply carried out after the assumevalid level, seemingly simply the previous few % of the chain (until you manually configured it to be one thing else).
- The scale of the UTXO database grows dramatically all through the blockchain. A bigger database is slower to function on, particularly as soon as it now not matches within the in-RAM cache.
- The estimate of the variety of transactions could develop barely extra correct because the chain progresses.
- The friends you might be downloading from could change, typically a peer that’s offering you information rapidly goes offline. Typically sluggish friends are kicked (this largely issues if the community side is the bottleneck).
- Your pc could also be doing different issues on the similar time, which change.
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