Just an FYI. You may or may not want to upgrade your CGMiner to 3.5.1 and 3.6.1 due to a new feature that waits 5 minutes before switching back to your primary pool if you failed over to your backup pool. I have HashCows as my Primary and Middlecoin for secondary in CGMiner for my Altcoin miners. If we mine for 10 minutes on a particular coin, 5 minutes of that I'll be stuck on Middlecoin as backup and lose out on Hashcows.
I raised this with the CGMiner guys on their thread and here's the response so far. Not encouraging:
With this new feature in 3.5.1:
- If we switch away from a pool in failover mode, we will now only switch back to it if it's up for at least 5 minutes to avoid reconnecting to pools that are only intermittently up - good for DDoS situations which we've seen a lot of lately.
Is there a way to adjust the switch back timing? When mining Altcoins on a multi coin pool like Middlecoin or Hashcows, 5 minutes is way too long since fail-over gets triggered upon switch of coin. So if the pool is mining a certain most profitable scrypt coin for a round of 10 minutes only, then half that is lost because of this new feature! The ideal would be to set it down to 1 minute or even just 30 seconds.
Repeating this since it's a feature carried over into 3.6.1.
Any chance we can adjust the switchback time from failover?
Sorry but code designed just for altcoin mining takes absolutely last priority.
Fair enough... better than a flat out "no" unless that's what this is.
That said, failover switchback timing doesn't just have to be an "Altcoin" issue. That was just a symptom. Making it defeatable so that it can use the previous behavior of switching back to primary pool once that pool is Alive would work. Either way, just putting it out there.
This goes back to something I and others mentioned earlier in this thread that Hashcows had a relatively significant delay when we switched coins that triggers failover condition if you have backup pools setup. Don't know if minimizing that delay further would help, but....
Hashcows has been Mooing pretty stably lately, so I may just disable my backup pool for now until the failover switchback timing is resolved. Don't want to miss any of that sweet sweet Hashcow milk.
UPDATE: I reverted to the 3.5.0 version of CGMiner from git. Seems to be the last version before they implemented the failover switchback timer of 5 minutes. For what it's worth, I also noticed horrible Hashrates and stability issues on 3.6.1 compared to previous versions for Scrypt mining.