[ANN][CNC][P2pool] - ChinaCoin (CHNCoin) P2Pool - 1% Fee - Stable and Fast!

[bitterdog]

it this correct?

[gritter]

seems like theres some issue?

not sure that number is accurate, afaik thats the payout for the default address of the pool only, its not accurate and it fluctuates between 0 and peanuts

im going to be off for the next couple hours, cross fingers!

[Narken]

you can try the following, the p2pool server sets the difficulty dynamically otherwise:

Tips to reduce DOA rate:(taken from Narken's thread)
You can set your share difficulty by adding +0.0000xxxx to your CHNcoin adress:

yourCNCaddress+0.0004872

Recommend share difficulty:

Hash Rate (KHash/s)   Difficulty
1   +0.00000116
5   +0.00000582
10   +0.00001164
50   +0.00005821
100   +0.00011641
250   +0.00029103
500   +0.00058207
750   +0.00087310
1000   +0.00116414

Could anyone elaborate how does it work exactly, I set those +0.xxx in cgminer configs, but I've got several rigs and each has several cards.. is it set per address (since it's address+0.xxx) and therefore all hashing power combined, or per rig (all cards' in one rig hashrate combined) or per card in rig (if so, which card since there are different cards in one rig)? I played with those "+0.xxx" options but not only that didn't help with rejected rate (~30-35% in my case which is really A LOT ) I've also had "cgminer has stopped working" on one of the faster rigs (4*7970s) after a few minutes of running with that "+0.xxx" option set.

You set it per miner per card  based on the card's hashrate. But test it around for best options.

See more tips in my thread if needed:

https://bitcointalk.org/index.php?topic=193216.0

[phorensic]

Down for a few hours for me.  Off to another p2pool....grrrrrrrrrrr.

[gritter]

up again! sorry was offline and there was a DNS issue fixed now

efficiency currently at 120% after some further server tweaks

[sikman]

 pointed 1 of my rigs that has 1200 kh/s all I got 99% of the time is requested restart and over 5min I got 8 shares....any other time would be 10X that amount

[2fast4u]

Worst pool, eight hours 0.38 CNC  Speed 2Khs

[gritter]

pointed 1 of my rigs that has 1200 kh/s all I got 99% of the time is requested restart and over 5min I got 8 shares....any other time would be 10X that amount

in cgminer you will see lines like this constantly (like every couple seconds):

[2013-05-06 12:29:34] Stratum from pool 0 requested work restart

This is normal operation of P2Pool, it doesnt affect your payout. The low number of shares is also expected as P2Pool only counts shares with high enough difficulty, this is also normal operation, Im seeing the same on my 1000KH/s rig.

I have 1200kh/s pointed at the pool, according to http://cnc.strament.com/calculator.php that should net 101.7 CNC per 24 hours, or 4.23 per hour.

I started mining again when the pool was up exactly 2.5 hours before now, since then I have received 8.5 CNC, at the theoretical rate I should see 10.575 CNC for 2.5 hours work, so its about 2 CNC short. Given that all CNC P2Pools I have seen, including this one, have about ~20% DOA Shares, that would account for the missing ~2 CNC.

So Im assuming so far the payouts are working as expected given the ~20% DOA shares, please report your own payouts if you suspect any issues.

[gritter]

Worst pool, eight hours 0.38 CNC  Speed 2Khs

so sorry, the pool was down for a couple hours - if you had a failover server defined in cgminer it probably mined there, its only up since 2.5 hours again

[gritter]

Worst pool, eight hours 0.38 CNC  Speed 2Khs

Btw I assume you mean 2000Kh/s? at 2Kh/s 0.38 CNC would be a good payout

[gritter]

just noticed that even though you use the cmdline options for cgminer from the first post it might not set the Scantime and Expiry correctly (e.g. if you had a slightly corrupted cgminer.conf file, which I just found out to be my case), which is quite important to get good results.

You can check (or change) if the values are correct (Scantime: 5, Expiry 5) by pressing S while cgminer is running, then press S again to change the Scantime to 5, then E to change the Expiry to 5 if they are not, e.g. it should look like this:

Code:

[P]ool management [G]PU management [S]ettings [D]isplay options [Q]uit
 GPU 0:  74.0C 2092RPM | 214.9K/216.3Kh/s | A:46 R:15 HW:0 U:6.42/m I:17
--------------------------------------------------------------------------------

[Q]ueue: 1
[S]cantime: 5
[E]xpiry: 5
[W]rite config file
[C]gminer restart
Select an option or any other key to return

This should reduce rejected shares in most cases if you were running with Scantime 60 and Expiry 120 before, which are the defaults

[gritter]

did some more testing and for me Scantime=1 and Expiry=1 seems to slightly lower rejects compared to Scantime=5 and Expiry=5

so I recommend to use Scantime 1 and Expiry 1 for the moment, anyone else observed this?

updating first post cmdline's accordingly

[gritter]

anyone care to comment on payouts (whether good or bad!)? personally im seeing more or less expected payouts at 1200KH/s, the payout statistics on the graphs page seem wrong though, I get sometimes more and sometimes less than reported there, not sure why the stats are not correct, check your wallet to see if you are getting expected payouts (looking at 2 or 3 hour periods, since this is PPLNS there is variance)

[2fast4u]

Worst pool, eight hours 0.38 CNC  Speed 2Khs

Btw I assume you mean 2000Kh/s? at 2Kh/s 0.38 CNC would be a good payout

It's my mistake, certainly 2000Khs.

[gritter]

decided to disconnect from the p2pool network used by https://github.com/chrda/p2pool-chncoin and run the node standalone (one small node in asia is also joined atm) with some tweaked parameters (instead of last 3 blocks from the aforementioned code it should now consider any shares submitted over last 120 blocks, this is same as most feathercoin p2pool's), this should result in much better payouts for everyone, first block was already found!

due to the changeover there was about 20 minutes of hickup for all miners, sorry about that but hopefully the payouts will be better now!

[gritter]

next block should come soon, start pointing hash here to join the bonanza

pretty sure the payouts here should now be better than most CNC pushpools and other p2pools!

[gritter]

DOA Shares under 5%!

[phorensic]

did some more testing and for me Scantime=1 and Expiry=1 seems to slightly lower rejects compared to Scantime=5 and Expiry=5

so I recommend to use Scantime 1 and Expiry 1 for the moment, anyone else observed this?

updating first post cmdline's accordingly

Yes I set both to 1 as recommended by many other scrypt tuning threads and it works well.

[2fast4u]

1 worker Accept 163 Reject 48
2 worker   Accept 460 Reject 120

7 hours 2000 Khs only 10 CNC!!

[gritter]

waiting for next block to be found to trigger payouts, go go go