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Author Topic: [CLOSED] BTC Guild - Pays TxFees+NMC, Stratum, VarDiff, Private Servers  (Read 829025 times)
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ChaosFox
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January 31, 2013, 06:18:30 AM
 #1521

I've been using Stratum since I went back to mining for this pool, so far so good.  Wink

However, there's something that has piqued my interest... with over 10k submitted and accepted shares, I see the rejected share column has Stale/Dupe/Other. In my case, the count is 20 / 0 / 3 which I suppose is rather decent. Now, what are these "Other" rejected shares? I skimmed over both threads and didn't really see the answer to this question, so it would be nice to know whether I should be concerned or not.

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eleuthria
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January 31, 2013, 03:21:47 PM
 #1522

I've been using Stratum since I went back to mining for this pool, so far so good.  Wink

However, there's something that has piqued my interest... with over 10k submitted and accepted shares, I see the rejected share column has Stale/Dupe/Other. In my case, the count is 20 / 0 / 3 which I suppose is rather decent. Now, what are these "Other" rejected shares? I skimmed over both threads and didn't really see the answer to this question, so it would be nice to know whether I should be concerned or not.

Other = Unknown work OR Low Difficulty.

Unknown = This is generally the result of the server being restarted.  The server keeps track of the work it has sent out for the last 5 minutes [10 work lists].  When you submit a share, it checks if the work list exists.  During a reboot, these lists are wiped/start over.  Additionally, your ExtraNonce is changed after a server restart.

Low Difficulty = You likely submitted a share at the same moment as your difficulty was adjusted upwards, almost like a stale.  The next major revision to the Stratum code will be altering how difficulty is handled to allow work submissions of previous jobs at your old difficulty.  At the moment this isn't high priority, because this generally only happens once or twice during your first minute of being connected, and frequently it won't happen at all.  The variable difficulty implementaion on BTC Guild is very elastic, so it does not constantly bounce you up/down between difficulties after you've been adjusted up.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
Joshwaa
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January 31, 2013, 04:47:22 PM
 #1523

When can we expect to be able to set our minimum difficulty for miners?

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January 31, 2013, 05:32:26 PM
 #1524

When can we expect to be able to set our minimum difficulty for miners?

If everything goes as planned, Sunday evening.  I will be setting up one hopefully final DNS entry for BTC Guild, a stratum only DNS [until getwork is fully retired].  The new entry will be Stratum ONLY, no redirects through a getwork frontend, and round robin DNS [something that couldn't be used effectively with getwork] to help load balance as the mining landscape moves off of getwork entirely.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
eleuthria
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January 31, 2013, 05:57:15 PM
 #1525

Public Service Announcement - Don't Lose Out on Price Swings!

This is a friendly reminder.  BTC Guild, like any respectable and secure pool, does not keep all funds available in an online accessible wallet.  This prevents the pool from being hacked/robbed for a significant portion of user balances.  When the prices surge like they have in recent weeks, sometimes withdrawal activity is increased dramatically, and this means there is the possibility that the online accessible funds used to make payouts can run out.

While I make sure to keep the wallet topped off during these periods, there are some users that accumulate significant balances and do not withdrawal regularly.  If some of these users withdrew simultaneously while I am at work or asleep, the wallet could run out of funds temporarily, and this means you may not be able to catch the trading spikes.


BTC Guild has offered automatic payouts at no fee for over a year.  Setting an automatic payout can keep your wallet clean [since your payments are always even numbers], and keep your account balance low.  It also assists in keeping the pool "hot wallet" funds steady, resulting in a lower chance of a delay in receiving your on-demand withdrawals.

I am honored that some users have the amount of trust in my pool and my security measures that they do.  However, keeping such hefty balances and expecting immediate access to funds when you click 'Request Payout' is a risk, and can cause you to lose out on significant earnings if you miss the spikes in BTC value due to a few hours of delay caused by an empty hot wallet.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
eleuthria
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February 01, 2013, 04:19:36 AM
 #1526

There was a brief [~1 minute] interruption on the US-based Stratum server preparing for minimum difficulty settings.  If your client did not automatically reconnect, you should check to make sure you're running the latest mining software/proxy version.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
Roland68
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February 01, 2013, 09:02:49 AM
 #1527

Please, don't stop get-work access...

It's working nicely with my configuration, each time i'm trying stratum, my pc's stops mining randomly ... i'm tired playing around with fixes and releases, when everything is fine with getwork ...

thanks
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February 01, 2013, 11:06:16 AM
 #1528

Just went through 2 stale blocks today at Bitminter, coming back to BTC guild. PPS or how is PPLNS treating people?

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February 01, 2013, 11:49:35 AM
 #1529

I switched back to BTC Guild today and it is no longer allowing me to use stratum.  It will only use LP.  The only thing I have changed on my end is update to CGMIner 2.10.4.

What address are you connecting to?  Stratum is running fine over here.

50.31.149.57

Have you tried using DNS to connect?

Yes, I always use http://btcguild.com:8332.  CGMiner displays that IP address.

That's interesting...50.31.149.57 is stratum only.  It's not possible to use LP on it.  I'm wondering if it's a display issue on cgminer 2.10.4?  You could check if you're on Stratum or not by turning on PPLNS for a minute to see if your PPLNS stats increase.  If so, you're actually on Stratum.

I switched to PPLNS on that worker some time ago.  I get the nag screen saying stratum is more efficient and when I look in the worker page it says PPLNS is stratum only.

Stratum used to work.  BTC Guild is the first place I used stratum.
Sam

Edit: OK, Stratum isn't using 8332 on .57 it's using 3333.  So I changed my old firewall rule which was allow Port 10332 on IP .59 to .57 and TCP 3333 and now it Stratuming again.  Didn't you stop using TCP 10332 when you shutdown the beta server?

Guess I should have fired up Wireshark earlier.
Sam

Ah, didn't even think about local firewall issues.

There are 3 public stratum servers.  50.31.149.57 is split into two [one on port 3333, one on 10332].  The other is de.btcguild.com [176.9.42.247], also port 3333.  There is a 4th server that isn't advertised, the original stratum beta test server [stratum.btcguild.com:9332].  I never closed that beta server off, and it's been updated with the latest versions of the code over time.

I've been working towards moving to 3333 by default since that is the sort of 'standard' port that seems to have been picked.  I've been leaving legacy ports online due to people who point to direct IP/port.

Oops I have used stratum.btcguild.com:9332 all along..., I switched yesterday to 50.31.149.57:3333 (after reading this) , had a lot of dupes and others lately (24h). 
eleuthria
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February 01, 2013, 03:19:54 PM
 #1530

Please, don't stop get-work access...

It's working nicely with my configuration, each time i'm trying stratum, my pc's stops mining randomly ... i'm tired playing around with fixes and releases, when everything is fine with getwork ...

thanks


Getwork is staying for a while.  It will just continue to receive reduced support/fewer servers as time goes on.

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BTC Guild Forum Thread
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February 01, 2013, 05:40:19 PM
 #1531


BTW, it is confirmed that BTC Guild is ASIC-ready Smiley

Currently mining with the Avalon ASIC unit on BTC Guild, over stratum.


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February 01, 2013, 06:36:09 PM
 #1532


BTW, it is confirmed that BTC Guild is ASIC-ready Smiley

Currently mining with the Avalon ASIC unit on BTC Guild, over stratum.



I apologize for being off topic, but did you post an Avalon review yet?
Thanks,
Sam

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
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February 01, 2013, 06:37:45 PM
 #1533

I apologize for being off topic, but did you post an Avalon review yet?

Yes: http://garzikrants.blogspot.com/2013/01/avalon-asic-miner-review.html


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February 01, 2013, 06:45:35 PM
 #1534


Thank you,
Sam

A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?
eleuthria
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February 02, 2013, 04:17:00 PM
 #1535

Users who were still pointed at the old stratum.btcguild.com:9332 may have experienced brief interruptions over their connection this morning.  This old DNS entry was always setup and advertised as the testing server for Stratum, and is finally getting some needed changes.

The following changes should be deployed to all Stratum servers by tomorrow:
1) Drastically improved the time it takes to prepare/forward work for a new block.  This was much more noticeable on the test server than the live server, but will still help reduce stales.
2) Minimum difficulty settings.  You will be able to set a desired minimum difficulty for use with the Stratum servers.  Difficulty can still rise above this setting if you exceed certain share-per-minute thresholds.
3) Automatic load sharing across multiple backend servers to further improve performance.
4) Dedicated stratum DNS entry, so you can connect directly to the server without relying on the redirect notice from the getwork servers.


#4 is not a major performance change, other than it will allow you to establish a new stratum connection without relying on a getwork server to respond with the X-Stratum header.  The Stratum implementation does not require you to keep in contact with the getwork server after the initial redirect, so it will likely not affect any users unless the getwork server stopped responding entirely.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
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February 03, 2013, 12:10:46 PM
 #1536

Btcguild.com is dead but workers still get jobs. Any info?

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February 03, 2013, 01:05:52 PM
 #1537

Btcguild.com is dead but workers still get jobs. Any info?

Yep info please..

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February 03, 2013, 03:35:02 PM
 #1538

The server running the website and one getwork pool is locking up with a hard drive failure.  Rebooting the host node now and looking at options for moving them.


UPDATE:  Website is back online.  One getwork pool is still offline, working on redirecting traffic to a different server temporarily.  The website will be a bit sluggish while the RAID resyncs.

UPDATE2:  I've double checked the scripts, and the only thing that should have been interrupted during the website outage were idle emails and automatic payouts, not counting the getwork server that was unusable.  Users who set another BTC Guild server as backup, used a different server, or used Stratum, should not have experienced any reduced performance/earnings.

UPDATE3:  Stratum updates mentioned yesterday will likely be going live in about 6 hours.  Just working on making minimum difficulty work properly without leaving it open to withholding shares for greater rewards when a new worker is authorized at a higher difficulty.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
eleuthria
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February 03, 2013, 09:03:50 PM
 #1539

Fresh update for the stratum changes.

Minimum difficulty code is going to be deployed on the beta Stratum server in the next hour.  Settings will not be available at first due to needing time to test it on a server with other users to make sure nothing funny happens with how new Stratum jobs are being created.

A few notes about the updated Stratum code:
1) Difficulty changes now take effect as soon as you pass a share-per-minute threshold.  These thresholds use different averaging windows to make sure you aren't adjusted to a higher difficulty as a result of lucky share submissions.  This is a change over the old code, where a difficulty change could only occur when a new job was prepared [so up to 30 seconds after you crossed an SPM threshold].

2) Minimum difficulty will be modified on the fly through the website interface.  Since Stratum difficulty is a per-connection basis [this is part of the official Stratum spec], be aware that if you connect many workers through one connection [single cgminer/proxy instance], your connection will be adjusted to the highest minimum difficulty of your authorized workers on that connection.


The settings to adjust your worker minimum difficulty may not be available for another day.  I am working on a smart load balancer to link with the Stratum servers.  I've been embedding new API calls in my Stratum codebase so a load balancer can talk to the servers.  Using the X-Stratum header redirects, I'm hoping to create a load balancing DNS entry that will always point you to the lowest load server when you establish a new stratum connection.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
eleuthria
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February 04, 2013, 01:17:27 AM
 #1540

Notice to All Stratum Users

Going forward, miners with native Stratum clients are encouraged to connect via the following address:

stratum.btcguild.com:3333


Currently this entry points to a single Stratum instance.  All getwork X-Stratum redirects now point to this same DNS entry.  Going forward, this will be first updated to a Round Robin DNS entry, to help share the load over multiple servers.  Because of how Stratum works [persistent TCP connections], this will be seamless to an end-user.  By connecting with stratum.btcguild.com:3333, you avoid interacting with a getwork server to obtain the Stratum IP/port.

This is not a mandatory change.  Getwork servers will continue to function and provide X-Stratum redirects, this will simply reduce one extra connection needed to begin mining, and avoid one extra failure point when starting up.

R.I.P. BTC Guild, 2011 - 2015.
BTC Guild Forum Thread
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