Bitcoin Forum

I thought it would be fun for everyone to know how everyone is doing on the amount of stales/rejected shares.


Would be sweet if there was somehow possible to answer %,miner and flags. Not possible by a poll here though.

Oh well...

I'm getting 0.1% stale on my pool. It might be the network, or just capacity (my pool is new and doesn't have massive traffic). But I was seeing 3% constantly over at deepbit/eligius/btcguild. I'm guessing the more traffic a site sees, the more stale shares are caused by network bog-down.

On Deepbit I get 0.35% stale of about 120k submitted shares.

I'm guessing it could also just be the routing of traffic from my home to comcast to whatever hosting center the pools use.

6% of 4.5k submitted shares *without* long polling, at 10 seconds getwork interval over here.
(I'll need to teach my mining software to use long polling one day.)

Really low on simplecoin, and also for bitcoins.lc, deepbit was about 2% and eligius was about the same as deepbit.

Must be the connections latency.

Interesting...  :-[ Im getting 9% stales right now on BTCGuild. Got between 1-3% on bitcoins.lc

I've noticed that if i get high percentage of stales, i restart the miner and it usually goes down a bit. Maybe its just a placebo. I dont know ^^

That could be heat issues. What are your average temps? I noticed that when I had a 5830 running around 75C there were more stales, not sure why or if it was just having a bad day, but when I moved it to a better box with lower temps stales went down, could be network location though, since the box is now closer to the endpoint of the network.

Cant be the heat. Im at 56-58C on the night, during the day its a bit more. 64C maybe
64C is still very good

I'm the opposite! I get <1% at DB, and slush's, but have been getting 3% the last 2 days @ simplecoins' pool! I restarted my miners, and made it about 5000 shares before I got a stale. Then it's just down hill. Heat is NOT an issue for me! My GPUs run at 39°, 65°, and 67°, and have since day one. It's only been the last two days that it has gotten bad! I have noticed though, websites have been loading rather slow too!

BUMP?

I've been getting low stales at BTCGuild.  Since I have been mining there, I see about .02%. to .03%.  I have took a snip to prove:

https://i.imgur.com/InIW6.jpg

I'm getting ~4% rejected shares using slush's pool. This in on a box running dual 5830's clocked at 975 core, 300 mem. Temp is in the 70c - 75c range.

Seems high. Thoughts on how to lower the reject rate?

0.72% over 133k shares on deepbit running at 250 mhash/s on my 6870.

Do you have less than 1% stales?

Please let us all know what hardware you have, what miner, settings and overclock!

About 3-5% at BTC Guild recently, but less than 1% when its server got upgraded. It might have something to do with server load.
Cumulative, about 1.3-1.4% since reset.

http://i52.tinypic.com/do83ua.jpg

0.82%, One of my windows miners at slush, couple days uptime. Normal radeon 5850 at very slight overclock (5-10%).
Standard rig with 80+ gold PSU etc.

http://i51.tinypic.com/331gd4z.jpg

Almost exactly 1%, a 5770 running on low end rig, few days uptime.

Would it have anything to do with network utilization? I run 5 rigs off a WRT54g linksys router. It seems to me, if you get two shares hitting the router at the same time, one has to wait! Then you end up with a slight latency.

4,7% at slush
5870+6870
I might try BTCguild soon.
I'm from germany so..that might be the cause.
Are there any good pools in Yurop? I heard BTCguild gets a server here by the end of the week.

Hello,

over a smallish sample (4000) i got like 3,5% on eligius EU
(2x 5850 + another 5850 in my desktop) with phoenix miner


Slush seems to be located in europe, got good connection here (I am in germany too).
You could try eligius.st EU server (hosted in .de), swepool or deepbit (hosted in .de)

0.5 to 1% Deepbit, 2% Eligius US. I should have the worst here being in Australasia, but these results seems par. Except for the bloke with his own pool.

1804/71600=0.0252 which is 2.5%, not 0.025%

If you're consistently getting more than 2% you should move to another pool.

I've got miners on Deepbit and BTC Guild, with no more than 1.5% stale shares (usually less than 1%)

6x 5870 overclocked to 420/440

2x 6950 (not overclocked - PC used for other things)

good thing you asked.

over the last maybe 10hours I got:

btc guild 5.6%  (ping 184ms)
deepbit 6.5%   (ping 31ms)
slush 15% !!!    (ping 45ms)

I am using phoenix and had the option -q 3 set. Will try with default queuesize now.

(located in germany)

I am having an issue of 87.6% stales.... :o

My set up is a Quadro FX770M in a Dell Precision Laptop. Diablo miner using FASTLOOP AGGRESSION=6 BFI_INT w 64

any ideas on how I can improve this down to the numbers that everyone else is achieving, or is it just the fact of having a crappy card for mining?

The Quatro's are tuned for 2D acceleration, not sure about cuda performance.

Could be your network connection though.

I am averaging about 6.32 MHash/s so while it is definitely nothing spectacular it is better than trying to churn it out with my CPU.

Barely, my 2GHz Core2Duo Laptop gets 4MHs on cpu alone.

Maybe try using ufasofts miner as well as whatever you use for the GPU to harness both? http://forum.bitcoin.org/?topic=3486.0

May boost your speeds.

To use with eligius pool make a shortcut to run this:  bitcoin-miner.exe -a 5 -o http://mining.eligius.st:8337 -u YourBitcoinAddress -p x

Well I have an AMD 6870 coming in on wed, so I can just keep putting up with this for now until that card arrives.

Been back to slush for a while, and since I last started GUIMiner it seems I have had 197 stales out of some 35900 shares...

Seems I'm doing quite well. Can't say I have any extraordinary settings, but maybe it helps being on 100Mbit line connected to a city fiber network that was built only a couple of years ago...

the -q option did not make any difference.

what else influences the amount of stale shares? WLAN connection? driver/sdk? miner?

I am running phoenix on 10.12/2.1 via WLAN.

--- edit ---
I read that the slower your workers hashrate relative to the network the more stales you get. I ran three workers on each card to be failsafe - that does not seem to be a good idea...

I'm at about 0.7% stale.

BTCGuild, 3x6990 (no OC), 2 GH/s, Phoenix, WLAN, long polling

Shares (Stale%)
-------  ------
35616  (0.49%)
35943  (0.47%)
36462  (0.46%)

I just noticed I have 19 stales of 90 accepted at bitcoins.lc with GUIminer. How do I activate long polling if it is supported? Anything else I could do like add some flags.