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Author Topic: Higher stale rates with 5970s, Phoenix and Phatk  (Read 1258 times)
jamesg
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September 18, 2011, 01:59:02 PM
 #1

I have a couple of machines running 3 5970s and am getting higher than usual stale rates. The stale rate for these machines seems to stay around .95% while other boxes with 5830s or 6950s are running rates from .2% to .35%. Has anyone else seen this and do you have an explanation for this?
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September 18, 2011, 06:26:56 PM
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two 3x 5970 rigs, one 2x 5970 rig - last twelve hours .17% - .37% stales - consistent with prior stats. only variance factor noted are the pools, some are better some are worse.
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September 18, 2011, 09:40:45 PM
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Before drawing any conclusions, make sure you
take your measurements on a long enough time
scale/number of shares. IMO, watching things for
a couple of hours isn't enough to draw conclusions.



I have tested the machines for multiple days and on different pools. Same results. Could this be something with the aggression setting in phoenix?
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September 27, 2011, 03:54:17 PM
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Well, it looks like I found my answer. Seems that my home internet connection has something to do with it. When I moved the boxes to the DC, the stale rate moved back to where all of the other miners were at. Weird.
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September 27, 2011, 04:28:18 PM
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Yeah IIRC, your internet connection has a lot to do with stales.  High latency = more stales, but I'm not sure why. 

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September 27, 2011, 10:38:33 PM
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Yeah IIRC, your internet connection has a lot to do with stales.  High latency = more stales, but I'm not sure why. 

doesn't get there fast enough?

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September 28, 2011, 01:26:49 AM
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That probably explains my high stale rate...  I have 9 rigs on hubs that are on a 200 feet of cat5 from the router

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September 29, 2011, 02:51:37 AM
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That probably explains my high stale rate...  I have 9 rigs on hubs that are on a 200 feet of cat5 from the router

You are kidding right?

Good Ethernet cable will transmit at about 70% of speed of light.  200ft of extra cable maybe adds 0.0000001 seconds to transmission time.
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September 29, 2011, 04:19:56 AM
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That probably explains my high stale rate...  I have 9 rigs on hubs that are on a 200 feet of cat5 from the router

You are kidding right?

Good Ethernet cable will transmit at about 70% of speed of light.  200ft of extra cable maybe adds 0.0000001 seconds to transmission time.


When I first set up in the shed, I only had 3 rigs.. stale was at .3%  as I added rigs, the stales got higher.  could be the old hub im using. not sure

I have a target rich environment for improvement and higher hashrates Smiley

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