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Author Topic: Deepbit hopping  (Read 5468 times)
DeepBit
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February 07, 2012, 08:25:27 PM
 #21

Well, maybe I misunderstood you, but if some miners moved from deepbit PPS to these 115% proxy pools that are hopping deepbit and others, you wouldnt expect to see a big difference in hashrate. Youd might lose some hashrate on the longer blocks, potentially win some at the beginning of blocks or on short blocks from miners that didnt mine at deepbit before. Not very conclusive IMO.
I was talking about monitoring all the hoppers, not the total/average hashrate.

If you are saying these proxy pools registered at deepbit and you are monitoring their behavior.. then that begs the question why on earth they would pay 115% to redirect the hashrate to a pool that pays out 97%, if its not for hopping?
NO, I didn't said that they are registered at deepbit.

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P4man
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February 07, 2012, 08:27:05 PM
 #22

Now that's an interesting observation/comment.  Months go when I was arguing with Meni about hopping I was putting forward proposition that smaller pools might be more vulnerable, and larger pools would be more stable.  Therefore I would expect the smaller pools to show more pronounced changes and trends.

I guess what really proves hopping is the % difference in hashrate, regardless of it being a  small or big pool.  But with a small pool, it might be difficult to get enough data points, without spanning such a long time that all sorts of things might factor in.

But hey, I dont mind trying. What other proportional pools do you know that we could look at?

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February 07, 2012, 08:28:25 PM
 #23

]I was talking about monitoring all the hoppers, not the total/average hashrate.

Okay, but even so, the hoppers might just have "pooled together" now.

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February 07, 2012, 08:59:19 PM
 #24

Bitclockers would be a great one.  Their stats are fun to watch.  A new block starts and they will jump to 700 - 900 GH/s, then like clockwork at ~40% their hashrate plummets to 100 - 150 GH/s.  Those poor miners making up the 150 GH/s are getting raped like a two bit whore.

If you're searching these lines for a point, you've probably missed it.  There was never anything there in the first place.
DeepBit
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February 07, 2012, 09:09:10 PM
 #25

Quote
The point about graphing the Y axis from zero would better show how much (or little) decline there is.  For instance, is deepbit losing 5% or more from hoppers, or less.  It is hard to tell given the way it is presented.
Speed never drops to zero. As i said over and over, its just blank space at the bottom. Or top, why not add a lot at the top?
The chart is fairly clear I think, from the sampled data there seems to be about 10% hopping.
Do you really not understanding why we are asking this, or you just want the graph to be more impressive ? :)

I was talking about monitoring all the hoppers, not the total/average hashrate.
Okay, but even so, the hoppers might just have "pooled together" now.
Well, you can believe in this if you want to.
I just told what my observations show me, this opinion is based on really good stats collection.

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February 07, 2012, 09:11:52 PM
 #26

Bitclockers would be a great one.  Their stats are fun to watch.  A new block starts and they will jump to 700 - 900 GH/s, then like clockwork at ~40% their hashrate plummets to 100 - 150 GH/s.  Those poor miners making up the 150 GH/s are getting raped like a two bit whore.

Eeeck. I think this chart on their own website already shows what you mean:



Im having a vague idea when they found blocks looking at that. Ill see if I can plot it against their blocks tomorrow. I got a feeling its indeed not going to be pretty  Shocked

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February 07, 2012, 09:35:32 PM
 #27

Do you really not understanding why we are asking this

No. But if you like lots of blank space, here you go":


I even resisted the urge to add to -100.000
I guess what you really wanted me to show was this:



While what you really should see is this:



I can stretch and zoom it any other way you want, it keeps showing a little under 10% hopping.

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February 07, 2012, 10:01:13 PM
 #28

Oh, so you know what's the difference Smiley

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February 08, 2012, 12:27:17 AM
 #29

Pool Ops that offer PPS to their members and hop with their hash power should be exposed. 
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February 08, 2012, 12:29:58 AM
 #30

So yes, GPUMAX is responsible for sending purchases to deepbit on occasion but it's not a popular pool for those that purchase shares.  I think one of the things that you might want to look at is when we're doing updates or have suspended purchases our miners fail-over to their offline pools.  So this could cause a spike in hashes that could make it look like they're hopping the pool when in reality it's just them failing over.  Technically they are hopping but not the traditional way.  I have no problem adding Deepbit to the not supported list for purchases if it's causing that much concern but I can't control where people fail-over to when we're not processing purchases.

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February 08, 2012, 12:45:21 AM
 #31

So yes, GPUMAX is responsible for sending purchases to deepbit on occasion but it's not a popular pool for those that purchase shares.  I think one of the things that you might want to look at is when we're doing updates or have suspended purchases our miners fail-over to their offline pools.  So this could cause a spike in hashes that could make it look like they're hopping the pool when in reality it's just them failing over. I have no problem adding Deepbit to the not supported list for purchases if it's causing that much concern but I can't control where people fail-over to when we're not processing purchases.
Yes, I noticed some users are getting enormous bursts of up to 160+ GH/s sometimes after your service started and this is completely fine for me unless they are hopping, so you can keep Deepbit in your "supported" list. Hoppers would direct their purchase to some proxy anyway.
The hopping incidents were completely different because its very clear to me if their starts and stops are correlated with many of our blocks.

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P4man
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February 08, 2012, 01:07:52 PM
 #32

I just analyzed Bitclockers stats and posted the results here:
https://bitcointalk.org/index.php?topic=61985.msg737310#msg737310

No need to for any regression analysis there me thinks lol
Short story: poor (/idiot) constant miners there are paying 10-12% to the hoppers, +2% fees to the pool.

I also tried calculating that for deepbit using second intervals, but either I screwed up somewhere or its statistical noise with pool luck and stales being a bigger factor, as I ended up getting about 0.2% better than expected earnings for constant miners.

P4man
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February 08, 2012, 02:21:22 PM
 #33

Yeah, I highly doubted deepbit was getting heavily hopped.

Non sequitur, depending how you define "heavily".My point still stands.

AFAICT, they are being hopped by something like 5-10% of the hashing power. That I cant prove an effect on the payouts of non stop miners is entirely to be expected since Id need a much bigger sample for that than just the last few days available on their site; there are many reasons you can get slightly above expected payouts (excluding their high fees of course) on such a short span, the most important one being pool luck.  Other factors are stales, since I have no data for them. Since they occur more frequently at the beginning of new blocks, it could chance the result significantly.

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February 08, 2012, 03:29:51 PM
 #34

Pool Ops that offer PPS to their members and hop with their hash power should be exposed. 

Exposed for being savvy businessmen. The miners are getting exactly what they deserve. What's the problem?

1)  They're actively hurting users of other pools.  Not every pool can handle swings of hundreds of GH/s, especially the smaller pools that still use hoppable methods.  It increases stale rates and the frequency of miners idling.  The pool ops can't afford to upgrade to stronger servers just to service a proxy-pool that only shows up for a small time frame.

2)  They're not being transparent, and it can be far more dangerous than the FUD that gets spread about Deepbit.  They should at least have on their site available for all to see what pools they hop, and what pool(s) they are currently hashing on.

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February 08, 2012, 03:39:15 PM
 #35

I never understood the purpose to that, my payout is more or less consistent within 1-2%, very rarely (maybe once every other day) i will only get 80/160,000 shares and it'll be higher or lower than normal, but as far as i can see Pool hopping hasn't done anything to my payout if it's happening at all. (Deepbit)

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February 08, 2012, 04:03:24 PM
 #36

I never understood the purpose to that, my payout is more or less consistent within 1-2%, very rarely (maybe once every other day) i will only get 80/160,000 shares and it'll be higher or lower than normal, but as far as i can see Pool hopping hasn't done anything to my payout if it's happening at all. (Deepbit)

If the hopping were to happen constantly, you wouldnt see it from your payout, it would always be "normal" but x% lower than 100% PPS for the current difficulty. Im not saying I think the impact from hopping is significant though, at least not compared to the fees you are paying anyway Wink.

P4man
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February 08, 2012, 04:08:05 PM
 #37

no no, no one but p4man thinks deepbit is getting hopped.

God you're such an idiot.
"No one but me" and Deepbit themselves Roll Eyes

Welcome to my ignore list again. I wonder why I ever let you out.

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February 08, 2012, 04:19:33 PM
 #38

Would somebody who is on PPS be effected more than Proportional? Because i'm on Proportional, the avg. payout was higher within a few days time at my current Mhashs.

I think there is a lot of sarcasm around here that i'm taking for fact and getting confused lol.

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P4man
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February 08, 2012, 04:25:41 PM
 #39

Would somebody who is on PPS be effected more than Proportional? Because i'm on Proportional, the avg. payout was higher within a few days time at my current Mhashs.

PPS would not be affected.
Of course, that has to be put in perspective, considering deepbit charges, what 10% fee for PPS? That makes hopping a total non issue by comparison, but you still get paid 10% less than on any (hop proof) zero fee pool though.

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February 08, 2012, 07:39:33 PM
 #40

For curiosity I did a graph of the last 321 blocks.  Time per block to the nearest second versus shares per minute.  I too can get a slight decline in hashes returned for the longer blocks.  Average shares/minute = 51,300, Standard Deviation = 2,127.

Better yet, I added a trend-line and calculated the R^2 values.  The result, with R^2 less than 10% tells me lots of noise and any relationship, if there is one, is weak.  The longest block in the sample had a hash rate higher than average - a random result Smiley
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