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Bitcoin => Development & Technical Discussion => Topic started by: weidex on October 31, 2019, 12:15:34 PM



Title: Testnet Strange Behavior ??
Post by: weidex on October 31, 2019, 12:15:34 PM
Hey guys, what's going on with the public testnet? Blocks are being mined every ~1 second ?


Title: Re: Testnet Strange Behavior ??
Post by: Rath_ on October 31, 2019, 12:24:15 PM
Hey guys, what's going on with the public testnet? Blocks are being mined every ~1 second ?

The difficulty on the testnet resets to 1 if a block is not found in 20 minutes. That's what probably happened. The difficulty changes every 2016 blocks so everything should be back to normal soon.

Edit: There was over 20 minute interval between block #1584576 (https://blockstream.info/testnet/block/00000000000000e70604ed1b6de5135cb788b9c7e02d7063fd77ae8822506fc8) and #1584577 (https://blockstream.info/testnet/block/000000000022e09ee2ee7b3fd223cb9ccfe11058cca5ad0c705fe5a0c26b28dc).


Title: Re: Testnet Strange Behavior ??
Post by: weidex on October 31, 2019, 12:33:05 PM
Hey guys, what's going on with the public testnet? Blocks are being mined every ~1 second ?

The difficulty on the testnet resets to 1 if a block is not found in 20 minutes. That's what probably happened. The difficulty changes every 2016 blocks so everything should be back to normal soon.

oh, that explains everything. Thanks!


Title: Re: Testnet Strange Behavior ??
Post by: aplistir on October 31, 2019, 04:45:18 PM
Hey guys, what's going on with the public testnet? Blocks are being mined every ~1 second ?

Interesting  :o
How does the network work when blocks are found every second?
There has to be crazy amounts of lost blocks.

I don't think blockchain is designed to handle 1s blocktimes very well.

The 10min average block time was among other things set to solve problems that can and do happen when several machines find blocks at the same time.


Title: Re: Testnet Strange Behavior ??
Post by: BrewMaster on October 31, 2019, 06:06:01 PM
The 10min average block time was among other things set to solve problems that can and do happen when several machines find blocks at the same time.

this is an interesting question and i would love to see an orphan rate and reorgs stats for Testnet, but is there that much competition going on in Testnet?
from what i understand the difficulty drops to minimum because there is nobody finding any blocks.