What happens with the pool? After every block my reward drops, but why?
Your actual award is "As of last block:". It went up from 0.1977789BTC to 0.21367375BTC. The "Estimated Change:" is based on what would happen if the pool found a block at that very moment. In the 1st pic, the round has been going for 01:19:26. You have submitted a lot of shares in that time, so you would get .00884507 BTC if the pool found a block at that very moment. In the 2nd pic, the round has been going for 00:29:57. At that point, you have only submitted roughly 3/8 of the shares that you submitted at the time that you took the screenshot of the previous block. (30 minutes vs. 80 minutes)
The system is based on Proportional Payment System. Your "Estimated Change" goes down to 0 with each new round, and goes up as you submit shares. (Except for taking into account unpaid shelved shares from recent blocks -- then your Estimated Change might be greater than 0 when a new round starts.) Your overall Shares Rewarded is at 98.75%, which is pretty high, so you don't have very many shelved shares to pay out.
Every round, while the round has >100% luck, for every 10 minutes of hashes your "Estimated Change" should be a little more than +.001 BTC. Once the round drops below 100% luck, this number will decrease.
1st, I am glad to see, I am not the only one having this issue, I have been monitoring the pool for the past 4-5 days. This is happening to few miners including me. This is absolutory not true explanation.
When a block is found by the pool, then how come majority of the miners "Estimated Change" starts as the same amount before.
I have been mining here for the past 4 months and had never had this issue before.
What the problem here is, if a block is found within 5-10 minutes, miner will not receive their full share "Estimated Change" for the Hashrate Average they put in. To verify this, you can easily check the contributors Hashrate Average to just compare with your "Estimated Change" after a block is found, you clearly see, most every miner "Estimated Change" goes to almost what they used to receive immediately. Only a few miners, I noticed that their "Estimated Change" starts low and then increase.
This depends on the previous luck and how many shelved shares you have in the system, and how evenly distributed they are. If your hashrate is consistent, and you have been mining for a while, then there would be not ever be too much change to your "Estimated Change". You will have a lot of shelved shares, and they will be spread consistently through the stack of shelved shares. Your new shares (i.e., shares contributed in the current round) receive credit, but at the same time the shelved shares stack is getting bigger, so as the round continues, your older shelved shares drop off past the threshold, so they are not going to be paid out.
As an example, let's say the pool expects 1000 shares to mine a block. Let's say that your hashrate is 1/100 of the pool, so you have mined 10 of the most recent 1000 shares in the shelved share stack. You have been mining consistently, so let's say that these shares are evenly distributed throughout the most recent 1000 shares: your shares are #1, #101, #201, #301, ..., #901.
Ok, That's the status of the stack right now when a new block starts. If a new block were to be found by the pool immediately, before you have submitted any shares, probably all 10 of these shares will be paid out: #1, #101, through #901 will all be paid out. So you will receive payment for 10 shares in that block, and all of them will be shelved shares. All of these shares are removed from the stack, and your older shelved shares will be moved higher in the stack.
But now let's say that the block isn't found immediately. Let's say that it is still a lucky round, 200% luck: a block is found after 500 shares. So your shelved shares are now incremented by 500: the share that you had in the stack that was originally #1, is now #501; the share that you had as #101, is now #601; etc. So what was previously #501 is now #1001 and would NOT get paid out in this block, and neither would the shares that were previously #601, #701, #801, #901. However, this is counterbalanced by the fact that you have been mining in this round as well, so you have new shares that now occupy positions #401, #301, #201, #101, and #1. So you are still getting paid for 10 shares in this round! 5 of them are shelved shares, and 5 of them are newer shares from this round. Now that these are paid out, your 5 new shares are gone from the stack, and 5 shelved shares are also gone from the stack as well. But this means that the older shelved shares now move up in position: The share that was originally #501 is now #1 in the shelved share stack, #601 is now #101, etc. (So #501 went from being #501, to #1001, to #1)
So if you are mining consistently with Eligius for a long time, and your hash rate has stayed relatively constant, then your "Estimated Change" will stay relatively constant. If you switch back and forth, or have mining trouble, or whatever, then your "Estimated Change" can vary greatly depending on pool luck and exactly where your shelved shares are in the stack.
