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Author Topic: [1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool  (Read 2034372 times)
Xenotron
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April 30, 2013, 04:03:53 PM
 #5161

Some kind of DOS attack?

Got three "GOT INCOMPLETE BLOCK FROM PEER" messages and then p2pool stopped. Peer IP is 192.203.228.65

Now just got another one.
+1. A lot of such messages and then p2pool just freezes.

Edit: p2pool for litecoins freezes even if I don't start miner at all...
"Governments are good at cutting off the heads of a centrally controlled networks like Napster, but pure P2P networks like Gnutella and Tor seem to be holding their own." -- Satoshi
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zvs
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April 30, 2013, 04:18:25 PM
 #5162

we could also really use a code change to be able to set the custom difficulty to at least 5000 , instead of the 2000 it is currently.  i know you can go in and modify the source yourself, but most people wouldnt/cant do that

Doesn't that already exist?

log in to p2pool and append /SHARECHAINTARGET+WORK_TARGET

e.g.

./cgminer -o something.pool.com:9332 -u mineruser/5000+16 -p none

that will return 5000 difficulty work to the share chain, and it will only serve 16 difficulty work (instead of "1")

yeah, it's existed for a long time.

it was capped at 2000 as of ~2 months ago.  i guess I haven't checked in a while, so maybe it already is changed

&

i added the "fix-protocol" : true

into my cgminer.conf file and it looks like it dropped the # of DOA's by about half


Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
gyverlb
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April 30, 2013, 04:46:59 PM
 #5163


it was capped at 2000 as of ~2 months ago.  i guess I haven't checked in a while, so maybe it already is changed


Isn't the cap dynamic and based on the current share difficulty?

P2pool tuning guide
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Xenotron
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April 30, 2013, 05:04:27 PM
 #5164


and then silence...
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April 30, 2013, 05:52:31 PM
 #5165


and then silence...

If you scroll up, there should be an IP address mentioned somewhere.

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April 30, 2013, 06:02:22 PM
 #5166

Changes:
* Fixed a few more potential memory leaks
* Memory usage graph now works in Windows, thanks to David Kassa
Looks like there are still leaks:

Windows 7, Python 2.7.4 64bit, no mining right now

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centove
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April 30, 2013, 06:16:21 PM
 #5167

Looks okay here:
http://ask.gxsnmp.org:9332/static/graphs.html?Week

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April 30, 2013, 06:19:06 PM
 #5168

Doesn't that already exist?

log in to p2pool and append /SHARECHAINTARGET+WORK_TARGET

e.g.

./cgminer -o something.pool.com:9332 -u mineruser/5000+16 -p none

that will return 5000 difficulty work to the share chain, and it will only serve 16 difficulty work (instead of "1")

Not sure if you'd know but ...
Seems to me there's some mileage in setting the difficulty to higher than the defaults if only to reduce network latency? I've started tinkering around and setting to minername/512+1 and it seems that 'Bitcoind GetBlockTemplate Latency' has reduced slightly since then.

Since getting that latency average down as low as possible is one of the only things you can do to improve p2pool returns (afaik), this seems to be an overlooked tweak?

I might also be being a bit dumb, but what's the point of setting the difficulty higher than the current valid accepted share difficulty? It's at 1300 at the moment for example. So any share submitted over 1300 should count.

And finally .. me also not understanding something (yes I have tried to!), if I've set 512+1, then why is it still returning 1/1 to 511/1 difficulty shares to the pool? Or have I got that the wrong way round?

Basically I'm puzzled by the difficulty settings and there ain't much documentation on it that I can find.

PS. Note to Litecoin miners. If it's giving you so much grief on p2pool, why not forget Litecoin and concentrate on Bitcoin? Seems to me that if you want BTC to retain value for all the BTC you mine, then sticking with BTC is the way to go long term rather than supporting a slightly less secure competitor for what basically seems to be greed.

PPS. Note to people freaking out because p2pool throws some errors and pauses a while to figure it out. Stop staring at the p2pool screen! I've only seen pauses like that near the initial startup while p2pool is easing in to the network. I guess it may happen while I'm asleep after running for hours, but if it does, it recovers, it goes on churning away, I maybe loose a few minutes. I've never yet checked it the next morning to find it's died, it's always happily churning away.
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April 30, 2013, 06:32:31 PM
 #5169

Doesn't that already exist?

log in to p2pool and append /SHARECHAINTARGET+WORK_TARGET

e.g.

./cgminer -o something.pool.com:9332 -u mineruser/5000+16 -p none

that will return 5000 difficulty work to the share chain, and it will only serve 16 difficulty work (instead of "1")

Not sure if you'd know but ...
Seems to me there's some mileage in setting the difficulty to higher than the defaults if only to reduce network latency? I've started tinkering around and setting to minername/512+1 and it seems that 'Bitcoind GetBlockTemplate Latency' has reduced slightly since then.

Since getting that latency average down as low as possible is one of the only things you can do to improve p2pool returns (afaik), this seems to be an overlooked tweak?

I might also be being a bit dumb, but what's the point of setting the difficulty higher than the current valid accepted share difficulty? It's at 1300 at the moment for example. So any share submitted over 1300 should count.

And finally .. me also not understanding something (yes I have tried to!), if I've set 512+1, then why is it still returning 1/1 to 511/1 difficulty shares to the pool? Or have I got that the wrong way round?

Basically I'm puzzled by the difficulty settings and there ain't much documentation on it that I can find.

PS. Note to Litecoin miners. If it's giving you so much grief on p2pool, why not forget Litecoin and concentrate on Bitcoin? Seems to me that if you want BTC to retain value for all the BTC you mine, then sticking with BTC is the way to go long term rather than supporting a slightly less secure competitor for what basically seems to be greed.

PPS. Note to people freaking out because p2pool throws some errors and pauses a while to figure it out. Stop staring at the p2pool screen! I've only seen pauses like that near the initial startup while p2pool is easing in to the network. I guess it may happen while I'm asleep after running for hours, but if it does, it recovers, it goes on churning away, I maybe loose a few minutes. I've never yet checked it the next morning to find it's died, it's always happily churning away.

Well, first off, yeah, I was wrong about the 2000 cap, just got a 2005 share.  Maybe the person up above that said the max adjusted based on current difficulty was right, or maybe it just got bumped up, I dunno.  It also seems to be providing me with 5000 difficulty shares, so I assume that'd work too if it ever picks one up (the whole New work for worker! Difficulty: 10.000000 Share difficulty: 5000.002049 thing).

A 2600 share will count for twice as much as a 1300 share, the only difference would be that it'd increase deviation, but should average out eventually.  For someone at 5-10ghash+, 2000 isn't bad.  For someone at 20ghash, 3000+ would be neat.  Why?  Because p2pool is set to balance out as much as it can to 6 shares a minute... so, for the person at 300mhash, the 1500 difficulty shares aren't so nice.  If more people set theirs higher, then the share difficulty would drop, and this huge variation wouldn't occur for people mining on one card or something.  Right now it's spitting out 1327 difficulty shares, so 511 or w/e wouldn't do anything.  You'd still have to get the 1327.

oh, heh, I just got a 4.82k share on that one that's looking for 5000  Grin




 

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
zvs
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April 30, 2013, 06:34:33 PM
 #5170


not here though:

http://nogleg.com:9332/static/graphs.html?Week


Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
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April 30, 2013, 06:43:37 PM
 #5171

A 2600 share will count for twice as much as a 1300 share, the only difference would be that it'd increase deviation, but should average out eventually.
That doesn't seem quite right. I just put in a 21,700 share, and it seems to be worth just as much as any other share I've put in.
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April 30, 2013, 06:51:26 PM
 #5172

A 2600 share will count for twice as much as a 1300 share, the only difference would be that it'd increase deviation, but should average out eventually.
That doesn't seem quite right. I just put in a 21,700 share, and it seems to be worth just as much as any other share I've put in.

I put in a 4750 share that got 0..  I don't know if it'll let you set your difficulty to 21700, but if you can and you did, then you would have gotten credit for 21700

Dacentec, best deals for US dedicated servers. They regularly restock $20-$25 Opterons with 8-16GB RAM & 2x1-2TB HDD's (ofc, usually lots of other good stuff to choose from).  I did a Serverbear benchmark of one of my $20/mo Opteron (June last year), it's here.  Have had about a half dozen different servers with Dacentec, & none have failed to sustain at least 40MB/s (burst higher). My favorite is a 12-month rent-to-own ZT Systems 2XL5520 16GB 2x2TB SATA for $40/month (got lucky with the 'off-brand', haven't seen a RTO 2xL5520 for under $50/mo since -- at least for monthly contracts).  wholesaleinternet.com has some ancient 2-core intel CPUs @ $10/mo sometimes (I got an Intel Core 2 6300 @ 1.86GHz, with a 250GB HDD with 46000 hours on it, LOL. $20 @ Dacentec is much better, if you can grab one). joesdatacenter.com (same location as Wholesale Internet) also occasionally has specials (or if you don't want to wait, it has an AMD Opteron 170 @ $16/mo).
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April 30, 2013, 07:01:39 PM
 #5173


What version of twisted is it using?

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Subo1977
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April 30, 2013, 07:07:58 PM
 #5174


cool Bitcoind times.

which bitcoind version ?
I got only an average from 0.10 sec

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April 30, 2013, 07:49:15 PM
 #5175

i get alot of rejected with the new version
also the latency is highter, new version suck big balls lol

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April 30, 2013, 08:17:14 PM
 #5176


I concur: zvs, your bitcoind latency is too high, you are probably losing some income. Read the guide in my signature.

P2pool tuning guide
Trade BTC for €/$ at bitcoin.de (referral), it's cheaper and faster (acts as escrow and lets the buyers do bank transfers).
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centove
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April 30, 2013, 08:23:44 PM
 #5177


Don't know if this was directed at me or not...

gregm@db:~$ bitcoind getinfo
Botcoind
{
    "version" : 80100,
    "protocolversion" : 70001,
    "walletversion" : 60000,
...
}

However.... It's kinda a beefy machine....

processor   : 15
vendor_id   : GenuineIntel
cpu family   : 6
model      : 26
model name   : Intel(R) Xeon(R) CPU           L5520  @ 2.27GHz

and 32 Gigs of memory....



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Smoovious
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April 30, 2013, 08:39:59 PM
 #5178

A 2600 share will count for twice as much as a 1300 share, the only difference would be that it'd increase deviation, but should average out eventually.
That doesn't seem quite right. I just put in a 21,700 share, and it seems to be worth just as much as any other share I've put in.
The amount the share is worth is based on the target diff you were aiming for, not what diff the share ended up being.

So if you were targetting diff 1,000 shares, and you got 2 shares, at 1,074 and 7,771 then both of those shares would be worth a diff 1,000 share.

If you were targetting diff 2,000 shares, then the 1,074 wouldn't have counted as a share, you would have still got a share for the 7,771 one, which would be worth a diff 2,000 share, which should give you the same share of the payout.

(my example is probably over-simplified, but you get the idea)

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April 30, 2013, 09:13:14 PM
 #5179

Running fine for 3 1/2 hours but memory usage graph still empty.
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May 01, 2013, 12:34:50 AM
 #5180

That one is just 50Mh/s as Im testing to see if I get everything up and running before switching the whole rig (I know is just a few minutes but dont want to waste even a second hehe), so what do you mean that the shares submitted by cgminers are not the same as shares accepted by p2pool? shouldn't I receive a rejected message or see something on p2pool?

Thanks for your reply Smiley

bitpop:

How the hell? bitcoind as server and miner on it

yes, it uses accepted shares to calculate the hash rate it shows on the graph

so if you submit a 2 difficulty share, then you should see some hash rate on the chart

but you wont 'earn' anything out of the p2pool pot.  for that you have to hit the rolling difficulty, which attempts to be as close to 6 new works per (ed: minute) as possible

we could also really use a code change to be able to set the custom difficulty to at least 5000 , instead of the 2000 it is currently.  i know you can go in and modify the source yourself, but most people wouldnt/cant do that


Thanks for the nice explanation Smiley

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