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Author Topic: [1500 TH] p2pool: Decentralized, DoS-resistant, Hop-Proof pool  (Read 2029825 times)
ChanceCoats123
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March 20, 2012, 11:50:28 PM
 #1481

Has anyone had issues with bitcoin timeouts? I have tried 6.0 RC2 and 5.3.1 and have had some pretty common timeout issues where the P2pool.exe windows says that it lost connection bitcoin for x.x minutes. I am running the bitcoind version and not -qt so that is all setup and I've not had issues like this in the past. I've also been using Cgminer for my miner. According to that, my local hash rate is 1300+. Though on p2pool.info and in the p2pool window, it reports my local as 1150 or so. Is there anyway that I could actually get my true hashrate to reflect in my mining efforts? I'd rather not lose more than 10% of my hashing power.
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NothinG
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March 20, 2012, 11:56:48 PM
 #1482

Has anyone had issues with bitcoin timeouts? I have tried 6.0 RC2 and 5.3.1 and have had some pretty common timeout issues where the P2pool.exe windows says that it lost connection bitcoin for x.x minutes. I am running the bitcoind version and not -qt so that is all setup and I've not had issues like this in the past. I've also been using Cgminer for my miner. According to that, my local hash rate is 1300+. Though on p2pool.info and in the p2pool window, it reports my local as 1150 or so. Is there anyway that I could actually get my true hashrate to reflect in my mining efforts? I'd rather not lose more than 10% of my hashing power.
Try Bitcoin 0.6.0 RC4.

ChanceCoats123
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March 21, 2012, 01:04:13 AM
 #1483

Will do. I had a power outage last night which presented the perfect time to get everything updated. P2pool is showing a much better local speed now. I was on CGmine 2.2.1 and got bitcoind 5.3.1 running today so it appears to like that a little better.
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March 21, 2012, 02:24:22 AM
 #1484

this just popped up does it mean anything.
Quote
2012-03-20 02:10:18.525000 ALERT: ('\x01\x00\x00\x00\xf6\xfacO\x00\x00\x00\x00\x
f2*EQ\x00\x00\x00\x00\xf3\x03\x00\x00\xf2\x03\x00\x00\x00P\xc3\x00\x00|\xc4\x00\
x00\x00\x88\x13\x00\x00\x00JURGENT: security fix for Bitcoin-Qt on Windows: http
://bitcoin.org/critfix\x00', '0E\x02!\x00\xf4\xbd>d\xa1\x07w\x99\xc8\xd7Z\xa5\xb
fGUd\x93\xceXF\x96P\x98\xea"\xa68\xbfW\xde\x8c\xa9\x02 -\xda\xe4\xa4\xc9-N\xe4\x
fa&G\xdb\x94dQ\x819\xdd\xd4\x8fW\xe0\xa0Q\x04Ew\tr\xa2Y\x0b')

This isn't an attempt at an exploit, its more like a public service announcement letting you know about a vulnerability so you can upgrade.

I believe the stuff around the text is a PGP signature, but I could be wrong.
Looks like hex obfuscation of malicious code.
I could be wrong though, it could just be a warning.


I LOL'd. A lot.
That is all.

Why the frell so many retards spell "ect" as an abbreviation of "Et Cetera"? "ETC", DAMMIT! http://en.wikipedia.org/wiki/Et_cetera

Host:/# rm -rf /var/forum/trolls
ChanceCoats123
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March 21, 2012, 03:45:31 AM
 #1485

Just wanted to mention that I looked into the bitcoind responding issue and when I opened taskmanager, I was confused to find cpu usage at 100%... My miner was consuming almost all of the cpu resouces and left little to none for p2pool.exe and bitcoind.exe. I dropped the affinity of cgminer from 2 to 1 core (no penalty on hashing speed as far as I can see) and haven't seen an issue with the local speeds reported by p2pool or the failure to communicate issue. So my advice for anyone seeing bitcoind communication errors or a lower than expected local hash rate reported by p2pool, check your affinities in taskmanager and allocate a few more resources to bitcoind and p2pool. Smiley
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March 21, 2012, 04:49:03 AM
 #1486

when I opened taskmanager, I was confused to find cpu usage at 100%... My miner was consuming almost all of the cpu resouces

That would be the "famous" AMD 100% CPU usage bug. If you can, try using the 2.5 SDK instead of 2.6. More info in the cgminer thread (and a whole bunch of other places, I assume).

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March 21, 2012, 06:40:56 AM
 #1487

Yeah, looks like the 100% cpu bug

It's not a p2pool bug, it's about driver and using OpenCL (miner is in OpenCL of course) How to fix: update your driver.
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March 21, 2012, 08:11:33 AM
 #1488

Small info:
I experimented with merged mining, and did so with GeistGeld. This alt-chain has a blockrate of only a few seconds (15, or 7 if it halved already). It did work, I solved some GeistGeld blocks. The reported hashrate by miners and p2pool was right as well. But after solving 10 shareblocks, I had 5 orphans and one dead. Must be because p2pool creates new work for the miners every few seconds, when GeistGeld reports a new block.
I switched Geistgeld merged mining off again, now I have around 10% orphans.

Of course this is an extrema, since GeistGeld is the fastest chain by far.

Ente
sharky112065
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March 21, 2012, 11:16:55 AM
 #1489

Yeah, looks like the 100% cpu bug

It's not a p2pool bug, it's about driver and using OpenCL (miner is in OpenCL of course) How to fix: update your driver.

Updating your AMD-APP Runtime and Driver is not always the answer. I spent hours trying different AMD-APP Runtimes and Drivers only to discover that on the combinations where I was able to get rid of the 100% CPU bug, I lost 10 Mh/s per card. I ended up going back to 11.9 (AMD-APP Runtime 2.5.732.1, Driver 8.892.0.0000) and using Affinity to only use one core.

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ChanceCoats123
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March 21, 2012, 12:20:43 PM
 #1490

I agree with Sharky. I'll just be manually setting affinity because I'm on 2.5 and 11.6 which for my 5870 and 3x 5830's is what I've found to work best. Smiley Thanks for the advice, fellas!
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March 21, 2012, 12:51:23 PM
 #1491

Does anyone know if there are plans for a p2pool WITHOUT bip16 support come april 1st? Would p2pool be robust enough to work in a mixed client scenario?

It seems to me like there could be quite a few miners who like the idea and lower variance of p2pool but would also like some say in which changes get accepted into the bitcoin protocol.
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March 21, 2012, 01:14:00 PM
 #1492

Try driver 11.11

They don't have the sdk 2.6 and don't have the 100%cpu bug
DeathAndTaxes
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March 21, 2012, 01:24:00 PM
 #1493

p2pool shows a global hashrate stat shown at "/rate" or on the p2pool command line.  Anyone know over what time period that is calculated?  Last hour? Last day? Last x shares?   I got an idea for a promo / contest involving p2pool.
sharky112065
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March 21, 2012, 01:47:04 PM
 #1494

Try driver 11.11

They don't have the sdk 2.6 and don't have the 100%cpu bug


And has a nice reduction of 10 Mh/s per card as apposed to 11.9 (Windows 7 X64 6970's and 5870's) Better to use Affinity IMO and not loose the 10 Mh/s per card.

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DeathAndTaxes
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March 21, 2012, 02:08:39 PM
 #1495

I showed no -10 MH/s per card on a farm of 24 5970s.  You sure you weren't just seeing variance.   Still even if it is -10 MH/s if it saves you 20 watts you likely come out ahead.  Using affinity still keep a core burning away at max clock rate and current.

You are aware the DRIVER is what affects the cpu bug.  The SDK is what affects OpenCL performance.  You can use any driver (including one with no CPU bug) with any SDK runtime (including the one you believe is +10MH/s better).
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March 21, 2012, 02:34:02 PM
 #1496

p2pool shows a global hashrate stat shown at "/rate" or on the p2pool command line.  Anyone know over what time period that is calculated?  Last hour? Last day? Last x shares?   I got an idea for a promo / contest involving p2pool.

720 shares, which should normally be 720*10 seconds = 2 hours. This should be more self-documenting.. maybe return a JSON Object with an "averaging period" attribute.

---

Thanks for the recomendations about handling the donation amount. I will implement the warning-on-p2pool-start idea.

Also, the RRD graphs are deprecated. The new JavaScript-based ones have a lot more potential and flexibility. They don't have support for measuring individual miners yet, but that will come soon.

Does anyone know if there are plans for a p2pool WITHOUT bip16 support come april 1st? Would p2pool be robust enough to work in a mixed client scenario?

It seems to me like there could be quite a few miners who like the idea and lower variance of p2pool but would also like some say in which changes get accepted into the bitcoin protocol.
BIP16 is already final. It has >50% of he Bitcoin network's hash rate behind it. Any attempt at opposing it can only invalidate your own work. Note that during the last few months, P2Pool has passed through your bitcoind's "coinbaseflags" into mined blocks, which let you vote during the period where it mattered.

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March 21, 2012, 02:55:14 PM
 #1497

Also, the RRD graphs are deprecated. The new JavaScript-based ones have a lot more potential and flexibility. They don't have support for measuring individual miners yet, but that will come soon.

That's great news, thank you!

Ente
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March 21, 2012, 03:16:01 PM
 #1498

Does anyone know if there are plans for a p2pool WITHOUT bip16 support come april 1st? Would p2pool be robust enough to work in a mixed client scenario?

It seems to me like there could be quite a few miners who like the idea and lower variance of p2pool but would also like some say in which changes get accepted into the bitcoin protocol.
The support is based on the client that each p2pool user is running, and whoever solves the block is the one that gets the "vote" That being said however, voting is pretty much over and P2SH is going ahead anyway, so if you don't support it you risk your blocks becoming orphan, and you not getting any payout at all. That would include all p2pool miners' payouts from a non supported bitcoind, since it is split.

Mining Rig Extraordinaire - the Trenton BPX6806 18-slot PCIe backplane [PICS] Dead project is dead, all hail the coming of the mighty ASIC!
sharky112065
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March 21, 2012, 03:55:54 PM
 #1499

I showed no -10 MH/s per card on a farm of 24 5970s.  You sure you weren't just seeing variance.   Still even if it is -10 MH/s if it saves you 20 watts you likely come out ahead.  Using affinity still keep a core burning away at max clock rate and current.

You are aware the DRIVER is what affects the cpu bug.  The SDK is what affects OpenCL performance.  You can use any driver (including one with no CPU bug) with any SDK runtime (including the one you believe is +10MH/s better).

I am fully aware that the DRIVER is what affects the CPU bug. I am also fully aware, that every combination of AMD-APP Runtime 2.5 variation I tried with newer drivers that fix the CPU bug, resulted in 10 Mh/s less per card on the three rigs I tried them on. This may not be the case on other OS's and card combinations.

I tested it on Windows 7 X64 with 6970's and 5870's (cgminer 2.3.1-2 and deleting .bin files every time a change was made [20 minute run time]).

Were you on 2.5.732.1 before you got rid of the CPU bug? If not you may not have noticed any drop in Mh/s.

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March 21, 2012, 04:26:06 PM
 #1500

P2pool keeps growing. This is a new record I think:

Code:
2012-03-21 17:27:27.558000  Pool: 369GH/s Stale rate: 8.3% Expected time to block: 4.8 hours
2012-03-21 17:27:29.960000 New work for worker! Difficulty: 0.999985 Share difficulty: 900.936232 Total block value: 50.016434 BTC including 27 transactions

Oh, by the way, bitcoin-qt 0.6 rc4 doesn't crash under Windows. Hooray.

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