To be clear, these are not 2% stales, these are 2% invalid shares.
[moderator's note: consecutive posts merged]
https://ibb.co/0CW8Yjwsure it is stale share... maybe miner should use another term... rejected maybe.. in other miners they never report stales in console but in pool side there are stales.
00:16:21 [2021-11-25 21:45:01.015]
00:16:21 [2021-11-25 21:45:36.375] GPU0 Solution found in 1.13s (Submit every 195.18 seconds)
00:16:21 [2021-11-25 21:45:36.375] Job 4eb6
00:16:21 [2021-11-25 21:45:36.401] Rejected (305/306) Reply: 25ms
00:16:21 [2021-11-25 21:45:36.401] mining.submit: Pool reponded with error
00:16:21 [2021-11-25 21:45:36.401] Error: Stale share
00:16:21 [2021-11-25 21:45:40.960] Job 4eb8
00:16:21 [2021-11-25 21:45:47.838] Job 4eb9
00:16:21 [2021-11-25 21:45:54.715] Job 4eba
00:16:22 [2021-11-25 21:46:01.012]
00:16:22 [2021-11-25 21:46:01.012]
00:16:22 [2021-11-25 21:46:01.012] asia-eth.2miners.com (ethash) PING: 25ms DIFFICULTY: 2.03 EPOCH: 456
00:16:22 [2021-11-25 21:46:01.012]
00:16:22 [2021-11-25 21:46:01.012]
00:16:22 [2021-11-25 21:46:01.012] ID BOARD TYPE KERN XINT TEMP FAN CORE MEM WATT
00:16:22 [2021-11-25 21:46:01.012] GPU0 2080S CUDA 5 4096 47/0 69 1199 8942 91
00:16:22 [2021-11-25 21:46:01.012] 91
00:16:22 [2021-11-25 21:46:01.012]
00:16:22 [2021-11-25 21:46:01.012] ID BOARD HASHRATE/W HASHRATE AVERAGE SHARES RATE
00:16:22 [2021-11-25 21:46:01.012] GPU0 2080S 507.08 kH/W 46.65 MH/s 46.65 MH/s 305/1/111 99.67%
00:16:22 [2021-11-25 21:46:01.012] 507.08 kH/W 46.65 MH/s 46.65 MH/s 305/1/111 99.67%
00:16:22 [2021-11-25 21:46:01.012]
00:16:22 [2021-11-25 21:46:01.012] SHARES PER MINUTE: 0.31 POOL HASHRATE: 45.22 MH/s
00:16:22 [2021-11-25 21:46:01.012]
i ain defending anyone ..this is also a good article from 2miners.. about stales, invalid and valid shares.
https://2miners.com/blog/does-ping-or-network-speed-affect-ethereum-mining-profitability/Shares can be:
....
Stale – shares not accepted by a pool because they come late.
Thanks to
uncle blocks in the Ethereum network, any stale share, even after 1000 ms or 2000 ms, can become a block solution. Sure, such a block won’t bring you a full reward of 2 ETH or more. But as an uncle block, it can bring you 1.75 ETH.
...
When you hear something like: “This pool has many uncle blocks because of bad servers,” it doesn’t make any sense. We are confident that good mining pools out of the top ten can buy and set up quality servers.
The number of uncle blocks can grow for reasons out of the pool’s control. When the most popular pool in the Ethereum network, Sparkpool, was located in China, the connection between the Chinese pools and the European/American pools was disrupted on several occasions due to the Chinese Great Firewall. Pools were exchanging information with long delays, and there were a lot of uncle blocks in pools.
...
Uncle Blocks: Yes or No?Definitely yes! The more the better. See for yourself: one pool finds 100 blocks and 5 uncle blocks, the other finds 100 blocks and 10 uncle blocks. The difference in reward is more than 3%.
So are uncle blocks good or bad?
There is no definite answer to this question.
If an uncle block is a result of a pool node poorly connected to other network nodes, it’s bad. If an uncle block is an unforeseen additional reward, it’s good.