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Topic: [ANN] Litecoin - a lite version of Bitcoin. Launched! - page 356. (Read 1467253 times)

hero member
Activity: 518
Merit: 500
Network is not scalable if it can't handle all these transactions. Cut the blockchain down somehow too ?
sr. member
Activity: 392
Merit: 250
Though there is one solution I can think of. Which is to require a transaction fee on all coins sent that are not a day old. So if you try to send coins that are not a day old (i.e. don't have 576 confirmations), you need to pay 0.1 ltc fee. What do people think about that?

That would probably be ok, however, you can't choose which coins to use so if you had a bunch of older coins and one new one which was exactly the size you want, I think the client would choose that one.  We'd need to combine it with a tweak to the coin selection algorithm
Yup, seems like a good idea.

Also, I'm not sure I understand why there isn't a 0.1 LTC fee per receiving address there:
This guy just spent 9.3 ltc to spam these 0.00000001 ltc transactions:
http://blockexplorer.sytes.net/block/74c44fc98bbdafd1c2dfb72f2f26a0798492cbd30d2f55fcfafe88b6e1bb7bcb
donator
Activity: 1654
Merit: 1351
Creator of Litecoin. Cryptocurrency enthusiast.
This guy just spent 9.3 ltc to spam these 0.00000001 ltc transactions:
http://blockexplorer.sytes.net/block/74c44fc98bbdafd1c2dfb72f2f26a0798492cbd30d2f55fcfafe88b6e1bb7bcb

He must really hate Litecoin. But at least the new transaction fees are working. He can't do this forever now.
full member
Activity: 140
Merit: 100
Probably caused by themselves.
They already keep transactions below 0.0001 (i.e. they don't give you a txn if it's below that - they keep it)
so most likely their modifications made the problem worse.

The withdrawal page just stalls...
legendary
Activity: 4592
Merit: 1851
Linux since 1997 RedHat 4
Is this why I can't get LTC out of BTC-E atm btw?

Probably. I know they had trouble dealing with the 0.00000001 ltc transactions.
Probably caused by themselves.
They already keep transactions below 0.0001 (i.e. they don't give you a txn if it's below that - they keep it)
so most likely their modifications made the problem worse.
donator
Activity: 1654
Merit: 1351
Creator of Litecoin. Cryptocurrency enthusiast.
Is this why I can't get LTC out of BTC-E atm btw?

Probably. I know they had trouble dealing with the 0.00000001 ltc transactions.
full member
Activity: 140
Merit: 100
Is this why I can't get LTC out of BTC-E atm btw?
newbie
Activity: 59
Merit: 0
i would like to say thank you for continuing to work through this spammer problem
donator
Activity: 1654
Merit: 1351
Creator of Litecoin. Cryptocurrency enthusiast.
This spammer is quite annoying. He's started to spam 577 ltc transactions now. Due to the way we calculate priority, sending 577 coins (even with just 1 confirmation) makes it high priority enough that it can be done for free. And he's able to cram about 13 of these into each block for free: http://blockexplorer.sytes.net/block/6a73e81f628fbd612c6c1359f7c7ef06dce074d1946608b51756d08ce7e95178

I thought there was only 500 bytes of space allocated for free transactions, that block has over 3k and there aren't even any paid transactions.

There are only 500 bytes of space allocated for low-priority free transactions. By sending 577 coins in a transaction, that makes the transaction high priority. So that's when the rate-limiting code kicks in. You are right, we could use the rate limiting code to reduce the number of free transactions per block, but that will limit non-spam free transactions also.

If we can't handle a dozen transactions a block, we need to just shut down.  The bloat is negligible.  I say just ignore it.
Isn't booth Litecoin and Bitcoin pretty doomed anyway unless it is possible to implement a cut-off point for downloading the chain that at least keep the file under a few gig? So, does it really matter in the long run how big the chain gets?

BeeCee1 makes a good point why this is not about the long run: https://bitcointalksearch.org/topic/m.622386
Right now, exchanges, pools, and block explorers are all having trouble dealing with this transaction spam. True in the long run, we'd all have to deal with it, but Litecoin is still young. It seems silly that 1 spammer can cause so much pain for everyone else that wants Litecoin to suceed. So I'm just trying to do what I can to fix this problem.

Problem is if you can block real transactions that should have been free by doing this...

Yes, I'd like to avoid that.
full member
Activity: 140
Merit: 100
If this guy keeps sending 13 of these spam transactions per block, he will bloat the chain about 1.7mb/day. This might be something we just have to accept. This is the same way that Bitcoin works. If you have free transactions, there will be ways for malicious person to take advantage of it.

Isn't booth Litecoin and Bitcoin pretty doomed anyway unless it is possible to implement a cut-off point for downloading the chain that at least keep the file under a few gig? So, does it really matter in the long run how big the chain gets?

Problem is if you can block real transactions that should have been free by doing this...
hero member
Activity: 633
Merit: 500
If we can't handle a dozen transactions a block, we need to just shut down.  The bloat is negligible.  I say just ignore it.
member
Activity: 115
Merit: 10
This spammer is quite annoying. He's started to spam 577 ltc transactions now. Due to the way we calculate priority, sending 577 coins (even with just 1 confirmation) makes it high priority enough that it can be done for free. And he's able to cram about 13 of these into each block for free: http://blockexplorer.sytes.net/block/6a73e81f628fbd612c6c1359f7c7ef06dce074d1946608b51756d08ce7e95178

I thought there was only 500 bytes of space allocated for free transactions, that block has over 3k and there aren't even any paid transactions.
member
Activity: 115
Merit: 10
Though there is one solution I can think of. Which is to require a transaction fee on all coins sent that are not a day old. So if you try to send coins that are not a day old (i.e. don't have 576 confirmations), you need to pay 0.1 ltc fee. What do people think about that?

That would probably be ok, however, you can't choose which coins to use so if you had a bunch of older coins and one new one which was exactly the size you want, I think the client would choose that one.  We'd need to combine it with a tweak to the coin selection algorithm.

I posted a thread on liteco.in earlier with some suggestions for rate-limiting.  I think if we changed that we could reduce the number of spam transactions that get through. (since we have more frequent blocks and less space reserved for free transactions we should have a lower rate limit). http://liteco.in/threads/rate-limiting-to-prevent-flood-attacks.43/
donator
Activity: 1654
Merit: 1351
Creator of Litecoin. Cryptocurrency enthusiast.
This spammer is quite annoying. He's started to spam 577 ltc transactions now. Due to the way we calculate priority, sending 577 coins (even with just 1 confirmation) makes it high priority enough that it can be done for free. And he's able to cram about 13 of these into each block for free: http://blockexplorer.sytes.net/block/6a73e81f628fbd612c6c1359f7c7ef06dce074d1946608b51756d08ce7e95178

There's only so much we can do about this since we can't really tell that these are spam transactions. The way to stop this is to require a transaction fee on all transactions, but I don't think we want to go that route. If you send a free transaction with higher priority, it will be include in the block before these spam transactions. Or if you want your transaction to always be include, just add a fee.

If this guy keeps sending 13 of these spam transactions per block, he will bloat the chain about 1.7mb/day. This might be something we just have to accept. This is the same way that Bitcoin works. If you have free transactions, there will be ways for malicious person to take advantage of it.

Though there is one solution I can think of. Which is to require a transaction fee on all coins sent that are not a day old. So if you try to send coins that are not a day old (i.e. don't have 576 confirmations), you need to pay 0.1 ltc fee. What do people think about that?
full member
Activity: 140
Merit: 100
Anyone know what happened to the p2pool ... or my p2pool client?

Code:
21:17:05.361000     ...inserting 44356 verified shares...
21:17:06.991000     ...done loading 47501 shares!
21:17:06.992000
21:17:06.993000 Initializing work...
21:17:11.307000 Fatal error:
21:17:11.307000 Traceback (most recent call last):
21:17:11.308000   File "twisted\internet\defer.pyc", line 455, in _startRunCallbacks
21:17:11.309000
21:17:11.310000   File "twisted\internet\defer.pyc", line 542, in _runCallbacks
21:17:11.310000
21:17:11.311000   File "twisted\internet\defer.pyc", line 1076, in gotResult
21:17:11.312000
21:17:11.312000   File "twisted\internet\defer.pyc", line 1020, in _inlineCallbacks
21:17:11.313000
21:17:11.314000 --- ---
21:17:11.314000   File "p2pool\main.pyc", line 222, in main
21:17:11.315000
21:17:11.316000   File "p2pool\main.pyc", line 186, in set_real_work2
21:17:11.316000
21:17:11.317000   File "p2pool\data.pyc", line 357, in think
21:17:11.317000
21:17:11.318000 exceptions.KeyError: 57603117827485759881969428621640341927497383179965498894350262008763184L

C:\Program Files (x86)\Bitcoin\Litecoin\litecoin-windows-miner-10-10-2011>
hero member
Activity: 518
Merit: 500
Any more news on optimizations for 2600K ?
member
Activity: 78
Merit: 10

 Thanks guys.
hero member
Activity: 560
Merit: 501

 Hello,

Is there a list for processor (M hashes/s)  for Litecoin?? Similar to what we have in Bitcoin: https://en.bitcoin.it/wiki/Mining_hardware_comparison


 
What brings this is available types of processors Intel i3/i5/i7/Xeon and AMD X6, Opteron and FX .......

Also a person can get a cheap Opetron (possibly old) from ebay to mine for Litecoin......

Regards,,,,,

There's some more detailed info on the forum.

http://liteco.in/threads/the-hardware-and-hashrate-thread.21/
mrx
member
Activity: 86
Merit: 10

 Hello,

Is there a list for processor (M hashes/s)  for Litecoin?? Similar to what we have in Bitcoin: https://en.bitcoin.it/wiki/Mining_hardware_comparison


 
What brings this is available types of processors Intel i3/i5/i7/Xeon and AMD X6, Opteron and FX .......

Also a person can get a cheap Opetron (possibly old) from ebay to mine for Litecoin......

Regards,,,,,


There is a list on litecoin wiki:

https://github.com/coblee/litecoin/wiki/Mining-hardware-comparison

However there are not so much info.
member
Activity: 78
Merit: 10

 Hello,

Is there a list for processor (M hashes/s)  for Litecoin?? Similar to what we have in Bitcoin: https://en.bitcoin.it/wiki/Mining_hardware_comparison


 
What brings this is available types of processors Intel i3/i5/i7/Xeon and AMD X6, Opteron and FX .......

Also a person can get a cheap Opetron (possibly old) from ebay to mine for Litecoin......

Regards,,,,,
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