GRIN Block Propagation Problems

2Miners · July 27, 2019, 8:08am

We’ve noticed that there is a problem with Grin nodes communication.

Are SparkPool and F2Pool intentionally keeping the blocks and then releasing them or is it just a network problem?

We are sometimes receiving blocks with a huge delay.

For example:
20190725 21:37:46.598 INFO grin_servers::common::adapters - Received 8 block headers from 198.178.126.16:3414

We’ve checked all our servers: EU, US, ASIA. They are connected great and receive the block information at the same time:

gist.github.com

https://gist.github.com/oneevil/bbc4f66b84b61bf88cf7fb1a776d98af

grin log new block

Jul 27 03:05:21 p6 sh[26062]: 2019/07/27 03:05:21 New block to mine at height 276040, HF: 2, diff: 3310175805, shareRatio: 12, scales: 7936/627 [659.97µs]
Jul 27 03:07:26 p6 sh[26062]: 2019/07/27 03:07:26 New block to mine at height 276041, HF: 2, diff: 3283638208, shareRatio: 12, scales: 7936/628 [781.683µs]
Jul 27 03:09:31 p6 sh[26062]: 2019/07/27 03:09:31 New block to mine at height 276042, HF: 2, diff: 3283308692, shareRatio: 12, scales: 7936/628 [644.851µs]
Jul 27 03:09:55 p6 sh[26062]: 2019/07/27 03:09:55 New block to mine at height 276043, HF: 2, diff: 3350477364, shareRatio: 12, scales: 7936/628 [563.814µs]
Jul 27 03:11:53 p6 sh[26062]: 2019/07/27 03:11:53 New block to mine at height 276044, HF: 2, diff: 3329661708, shareRatio: 12, scales: 7936/628 [448.059µs]
Jul 27 03:15:49 p6 sh[26062]: 2019/07/27 03:15:49 New block to mine at height 276045, HF: 2, diff: 3265522757, shareRatio: 12, scales: 7936/628 [599.129µs]
Jul 27 03:16:00 p6 sh[26062]: 2019/07/27 03:16:00 New block to mine at height 276046, HF: 2, diff: 3265893727, shareRatio: 12, scales: 7936/628 [539.452µs]
Jul 27 03:16:20 p6 sh[26062]: 2019/07/27 03:16:20 New block to mine at height 276047, HF: 2, diff: 3274983527, shareRatio: 12, scales: 7936/628 [506.283µs]
Jul 27 03:17:47 p6 sh[26062]: 2019/07/27 03:17:47 New block to mine at height 276048, HF: 2, diff: 3258821457, shareRatio: 12, scales: 7936/627 [603.572µs]
Jul 27 03:20:32 p6 sh[26062]: 2019/07/27 03:20:32 New block to mine at height 276049, HF: 2, diff: 3227513285, shareRatio: 12, scales: 7936/627 [484.155µs]

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You are welcome to discuss also on twitter:

quentinlesceller · July 29, 2019, 7:45am

Hi @2Miner, looking at how Grinscan shows the blocks in real time it seems relatively unlikely. How many peers do you have on each node?

Neo · July 29, 2019, 8:38am

I noticed your Network hashrate calculator doesn’t look right, it’s showing approximately double what it should be:

From Grinscan.net

Have you read this? On cuckarood29 graph rates & On dual PoW, Graph rates, gps, and Difficulty

Topic		Replies	Views
Sync Problems, miss p2p connection (Fixed) Tech Support	3	478	February 21, 2019
Waiting for peers Tech Support	2	968	January 31, 2019
Resolved: D̶o̶ ̶n̶o̶t̶ ̶u̶s̶e̶ ̶G̶r̶i̶n̶ ̶(̶g̶r̶i̶n̶-̶w̶a̶l̶l̶e̶t̶,̶ ̶G̶r̶i̶n̶+̶+̶,̶ ̶I̶r̶o̶n̶b̶e̶l̶l̶y̶)̶ ̶u̶n̶t̶i̶l̶ ̶f̶u̶r̶t̶h̶e̶r̶ ̶n̶o̶t̶i̶c̶e̶!̶ Announcements	75	8807	April 22, 2021
Slow block propagation of newly mined blocks? Mining	0	509	March 3, 2018
GrinMint - blocks found? Mining	8	1480	January 20, 2019

GRIN Block Propagation Problems

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