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Pool is going down for a couple of minutes to restart ppcoind to reclaim the 5Gb of memory it's using due to a memory leak.
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What code are you running for your exchange? Is it open source in anyway?
It's custom code written by me in the Ur/Web programming language. It's not open source at this stage. |
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If anyone finds an easy setup to reproduce the memory leak issue please let me know. Thanks,
Was PPCoin based on a stable bitcoin release? If so, what commit id, so I can get a diff of just the PPCoin change. |
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Hit it with sheetloads of hashpower to drive up the difficulty then abandon it to months of more difficulty than its remaining hashers can lower (due to it taking umpteen blocks for it to change and it taking them huge time to complete each block).
This wasn't really an attack, which implies malicious intent, but was a consequence of the difficulty adjustment algorithm and chain hopping. People would mine namecoin when it was profitable, driving up the difficulty, and then leave when it wasn't and it would take a long time to come down. The people mining weren't deliberately attacking the chain, they were mining for profit. |
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is possibly more to do with having been attacked like namecoin
What attack on namecoin are you referring to? |
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using bitparking for some reason, i had it 4hrs and it doesnt' look like it was added to my account on the pool
What's your username on the pool and I'll look it up. Are you sure you used the correct username, with the correct case? |
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I might have missed something, let me know if you had a request for a correction of an addition which I haven't addressed.
Bitparking is "Yes" to "Pay Orphans". |
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Coinotron does PPS now too so I assume it has instant payouts. |
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Ah that's probably why I don't see it on any of my nodes. Which RPC calls does the pool software call other than getwork? I don't see any change to getwork so I assume it's some other call causing this problem.
getwork calls CreateNewBlock, has that changed? The pool also called getdifficulty. |
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Does your mining give a reason for the rejects? The pool sends out a header explaining why it rejected the share,
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I see it on my pool as well. Running 64bit Linux it's at 4.6g. The exchange doesn't though, it's at 185m so I assume it's something mining related.
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Is the wallet of this and the pps pool the same? Just curious  No they are on different servers and have different wallets. |
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doublec: So Vircurex has said they will stop trading i0Coins as of Oct 1, I wonder how many like me on the pool registered a Vircurex address to our usernames? Will you still be supporting it after this announcement?
Also, can I connect a miner that wants difficulty 1 work units and then another instance of a miner that wants difficulty 8 work units using the same username? I have GPU's on one miner and will have FPGA(and eventually ASICs) on another, it would be nice to be able to manage them separately.
i0coins will still be mined as long as the chain is stable. If you've got a vircurex address registered you'll need to register a new account on the pool to mine with new addresses before vircurex close the doors on the chain. I'll look at setting up a quick i0coin webwallet based on my exchange code over the weekend so those who don't want to run an i0coin client can register an address to store coins. Another option is to ask vircurex if they'll give you the private key for the i0coin deposit address you are using. Each registered username needs to mine at a specific difficulty. So if you want two miners mining at different difficulty levels you'll need to register two names. They can share the same payout addresses however. If you try mining at different difficulties with the same username you'll get errors returned. |
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Please let it run until you see a few duplicates reported, then send me a PM with your log (pastebin.org works well). Luckily, if it's just mining software or proxy submitting a second time, it shouldn't be a problem (you aren't losing speed as a result of it).
The times I've seen this have been when the miner thinks the pool took to long in responding to a share submission and so sends it again. |
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Any way to see current PPCoin difficulty and a profitability calculator ?
Algo is SHA256 like BTC ? Reward is decreasing every block or something ?
Coinotron has difficulty and profitability. Bitcoin miners work. Reward is linked to difficulty. The higher the difficulty, the lower the reward. |
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I would enjoy seeing share data on bitparking though...
I have this page. The userid's are the first few characters of the sha256 hash of the miners username. Blocks themselves show at block origin or you can poll pool_history.txt. |
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Cool, I think this is an important change for bitcoin mining.
Also, my site is prettier.
Haha, yes it is. I'm impressed with how your site shows all the important information so nicely and I rage at my inability to do pretty sites! |
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Oh damn, my fault. I thought I should put my address there and I can see my stats. Username showed it right. Thanks bud.
PM me your username and I'll compensate you for the lost shares. |
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Ran out of money overnight, sorry! Funds are back up. The extra hash power is outrunning the 520 block confirmation so it's been requiring constant top ups at the moment.
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There was a brief restart just now as merge mining of the alt chains was resumed. I'll be tracking the performance and hopefully it'll stick.
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