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Author Topic: [1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool  (Read 2029987 times)
mdude77
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November 15, 2012, 07:14:26 PM
 #3861

why does p2pool always seem to fall on its face when the hashrate is > 380gh?

I used to think the same except I said > 300gh.

I now believe it's all variance. 

No one seems to complain when we get 6 blocks in a day, when we should get about 2.2.  We just complain when we have 24 hr blocks..

M

The problem is that we never seem to get any of those 6 or 5 block days when we are above 350gh. If we would get just one of those 6 or 5 block days, then I will be convinced there is not some kind of bug/design flaw.

I say 350 but really don't know the exact rate it is. Seems over 300 but less than 400 when it happens.

I used to be the same way.  But if you look at the numbers... right now we're at 360g/h, which works out about 11 hours if met right on "schedule".  With this low a hash rate, we will have really long blocks, and hopefully really short blocks.  According to http://p2pool.info/, we're well above the average time for block.  So yes the 24 hour blocks are painful, but we still come out ahead.

I'm hoping a bunch of people have the gumption to point their ASICs to p2pool so we can get the hash rate up to lower the variance.   (I know I intend to point at least one here...)

M

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Aseras
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November 15, 2012, 07:22:23 PM
 #3862

Does the new v9 retarget miner difficulty dynamically?

On a fresh start it's this
Quote
New work for worker! Difficulty: 0.999985 Share difficulty: 725.187715 Total block value: 50.148150 BTC including 165 transactions

after a while it start showing this

Quote
New work for worker! Difficulty: 3.033185 Share difficulty: 633.860115 Total block value: 50.542400 BTC including 716 transactions
New work for worker! Difficulty: 2.537561 Share difficulty: 637.237788 Total block value: 50.542400 BTC including 717 transactions
New work for worker! Difficulty: 1.820309 Share difficulty: 738.198270 Total block value: 50.063150 BTC including 63 transactions
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November 15, 2012, 08:26:37 PM
 #3863

I'm hoping a bunch of people have the gumption to point their ASICs to p2pool so we can get the hash rate up to lower the variance.   (I know I intend to point at least one here...)

M
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Aseras
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November 15, 2012, 08:35:02 PM
 #3864

I'll have at least 1/2 TH pointed here.
forrestv
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November 15, 2012, 08:39:11 PM
 #3865

Does the new v9 retarget miner difficulty dynamically?

On a fresh start it's this
Quote
New work for worker! Difficulty: 0.999985 Share difficulty: 725.187715 Total block value: 50.148150 BTC including 165 transactions

after a while it start showing this

Quote
New work for worker! Difficulty: 3.033185 Share difficulty: 633.860115 Total block value: 50.542400 BTC including 716 transactions
New work for worker! Difficulty: 2.537561 Share difficulty: 637.237788 Total block value: 50.542400 BTC including 717 transactions
New work for worker! Difficulty: 1.820309 Share difficulty: 738.198270 Total block value: 50.063150 BTC including 63 transactions

Yes, that's new. Preparation for ASICs! It tries to regulate the work's difficulty to keep it at one response per second.

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mdude77
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November 15, 2012, 10:14:15 PM
 #3866

Twice now I've seen pools saying their stratum implementation will not support merged mining.  (BTCGuild and Oz).  Will that be the same with p2pool?

M

MMinerMonitor author, monitor/auto/schedule reboots/alerts/remote/MobileMiner for Ants and Spondoolies! Latest (5.2). MPoolMonitor author, monitor stats/workers for most pools, global BTC stats (current/nxt diff/USD val/hashrate/calc)! Latest (v4.2) 
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November 15, 2012, 10:41:06 PM
 #3867

P2Pool release 9.0 tag: 9.0 hash: 2cb4d8381e179f71ea2075cdce948ea83cf0dc55

HARDFORK: Upgrade is required! Hardfork will happen after 95% of the pool's hash rate has upgraded. Everybody having not upgraded will be split off into a tiny P2Pool.

Windows binary: http://u.forre.st/u/urxoztyg/p2pool_win32_9.0.zip
Source zipball: https://github.com/forrestv/p2pool/zipball/9.0
Source tarball: https://github.com/forrestv/p2pool/tarball/9.0

Changes:
* Transaction preforwarding Transactions that you're mining are sent to peers before you get a share, so any block solution you find can be broadcast virtually instantaneously. This could theoretically get our invalid block rate below any other pool's thanks to our large network of nodes. This was implemented in v8, but was prevented from taking effect due to a bug being discovered.
* Stratum support in the P2Pool protocol. Stratum mining will be enabled in a future patch to v9.
here u go

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forrestv
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November 15, 2012, 11:37:18 PM
 #3868

Twice now I've seen pools saying their stratum implementation will not support merged mining.  (BTCGuild and Oz).  Will that be the same with p2pool?

No. P2Pool will support simultaneous Stratum and Merged mining. I don't believe that there's any technical reason for pools omitting MM support from their Stratum implementation (perhaps just a lack of incentive...)

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BR0KK
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November 16, 2012, 12:12:37 AM
 #3869

Switched to p2pool 9 already.

I really like the idea behind p2pool. Nice work that you do here! Smiley

mdude77
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November 16, 2012, 12:56:26 AM
 #3870

Switched to p2pool 9 already.

I really like the idea behind p2pool. Nice work that you do here! Smiley

It *is* really cool, and it seems to work really well.  I needed some time to be convinced of it, but I am now!

(just ignore the high stale rate...)

M

MMinerMonitor author, monitor/auto/schedule reboots/alerts/remote/MobileMiner for Ants and Spondoolies! Latest (5.2). MPoolMonitor author, monitor stats/workers for most pools, global BTC stats (current/nxt diff/USD val/hashrate/calc)! Latest (v4.2) 
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btharper
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November 16, 2012, 02:32:44 AM
 #3871

Does the new v9 retarget miner difficulty dynamically?

On a fresh start it's this
Quote
New work for worker! Difficulty: 0.999985 Share difficulty: 725.187715 Total block value: 50.148150 BTC including 165 transactions

after a while it start showing this

Quote
New work for worker! Difficulty: 3.033185 Share difficulty: 633.860115 Total block value: 50.542400 BTC including 716 transactions
New work for worker! Difficulty: 2.537561 Share difficulty: 637.237788 Total block value: 50.542400 BTC including 717 transactions
New work for worker! Difficulty: 1.820309 Share difficulty: 738.198270 Total block value: 50.063150 BTC including 63 transactions

Yes, that's new. Preparation for ASICs! It tries to regulate the work's difficulty to keep it at one response per second.
Is there any way to configure the period server or client side?
forrestv
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November 16, 2012, 02:36:37 AM
 #3872

Yes, that's new. Preparation for ASICs! It tries to regulate the work's difficulty to keep it at one response per second.
Is there any way to configure the period server or client side?

Not currently, no. Do you have a need to?

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tiberiandusk
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November 16, 2012, 02:50:06 AM
 #3873

CGminer says P2Pool is dead after switching to v9. It also pops up with errors about not having the merkel root.

Bitcoin Auction House http://www.BitBid.net BTC - 1EwfBVC6BwA6YeqcYZmm3htwykK3MStW6N | LTC - LdBpJJHj4WSAsUqaTbwyJQFiG1tVjo4Uys Don't get Goxed.
kano
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November 16, 2012, 02:55:05 AM
 #3874

Switched to p2pool 9 already.

I really like the idea behind p2pool. Nice work that you do here! Smiley

It *is* really cool, and it seems to work really well.  I needed some time to be convinced of it, but I am now!

(just ignore the high stale rate...)

M
Like any pool - if your rate is worse than the the other miners best rate, then you are losing out.
Unfortunately, on p2pool, the rate range is also much larger, so this has quite a sizeable effect.

Pool: https://kano.is BTC: 1KanoiBupPiZfkwqB7rfLXAzPnoTshAVmb
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Help keep Bitcoin secure by mining on pools with Stratum, the best protocol to mine Bitcoins with ASIC hardware
tiberiandusk
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November 16, 2012, 03:08:10 AM
 #3875

CGminer says P2Pool is dead after switching to v9. It also pops up with errors about not having the merkel root.

NM, it's working now.

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rav3n_pl
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November 16, 2012, 07:25:57 AM
 #3876

Yes, that's new. Preparation for ASICs! It tries to regulate the work's difficulty to keep it at one response per second.
Is there any way to configure the period server or client side?

Not currently, no. Do you have a need to?
Is this per miner or per node? Ie I have only 150MH, some 1GH miner is uisng my node. What will be share diff for me and for him? Same?

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btharper
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November 16, 2012, 07:41:31 AM
 #3877

Yes, that's new. Preparation for ASICs! It tries to regulate the work's difficulty to keep it at one response per second.
Is there any way to configure the period server or client side?

Not currently, no. Do you have a need to?
Is this per miner or per node? Ie I have only 150MH, some 1GH miner is uisng my node. What will be share diff for me and for him? Same?
In this case each miner would receive work with the target adjusted such that on average each would report back once per second. The slower hasher would get a lower difficulty share (though solving a sharechain block would be just as hard for either one) and the faster hasher would get a higher target so they still report back once per second.

I was wondering if this could be changed by the server/node (to reduce how often they're contacted) or by the client/miner (so they didn't have to report back as often/more often). Less often leads to lower badwidth and less time used waiting for the server's response to the submitted work, lower times give a more accurate picture of miner performance at the cost of more overhead.

I don't have any particular need, I can make up use cases (miners over local network who don't care about server and network usage, wanting to reduce overhead, and wanting lower variability in stats) and I figured it would be similar to setting share difficulty manually at the miner using :diff syntax on the username. Wouldn't have known without asking basically. In truth I could see this being abused much more than it's worth by people trying to tweak their statistics and making overall performance worse.
sharky112065
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November 16, 2012, 09:51:30 AM
 #3878

why does p2pool always seem to fall on its face when the hashrate is > 380gh?

I used to think the same except I said > 300gh.

I now believe it's all variance. 

No one seems to complain when we get 6 blocks in a day, when we should get about 2.2.  We just complain when we have 24 hr blocks..

M

The problem is that we never seem to get any of those 6 or 5 block days when we are above 350gh. If we would get just one of those 6 or 5 block days, then I will be convinced there is not some kind of bug/design flaw.

I say 350 but really don't know the exact rate it is. Seems over 300 but less than 400 when it happens.

I used to be the same way.  But if you look at the numbers... right now we're at 360g/h, which works out about 11 hours if met right on "schedule".  With this low a hash rate, we will have really long blocks, and hopefully really short blocks.  According to http://p2pool.info/, we're well above the average time for block.  So yes the 24 hour blocks are painful, but we still come out ahead.

I'm hoping a bunch of people have the gumption to point their ASICs to p2pool so we can get the hash rate up to lower the variance.   (I know I intend to point at least one here...)

M

OK, show me 5 or 6 blocks in a day when we are over 350 GH for the entire day and I will believe you. I know what variance is, but variance to the good when we are over 350 GH for 24 hours and I'm sold. It doesn't even need to be 5 or 6 blocks, just positive luck for that day.

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rav3n_pl
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November 16, 2012, 02:27:38 PM
 #3879

In mean time V9 is passing 40% of pool.
Trouble is, that V5+V7 is about 10%, so if those ppl will not switch to v9 95% hardfork will not happen soon...

Upgrade mates! Upgrade!

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November 16, 2012, 03:02:15 PM
 #3880

In mean time V9 is passing 40% of pool.
Trouble is, that V5+V7 is about 10%, so if those ppl will not switch to v9 95% hardfork will not happen soon...

Upgrade mates! Upgrade!

v8 update rush has worked after some time, then no fork. ppl disappointed -> longer time to do it now.

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