Antminer Queue?

[NorthStarGrime]

Setup some of my V9's today having poke about in shh found file called  user_settings
Inside there is one line  

Code:

 queue=

How to work out this value?  
From what I can find this is the queued work?

I set this to 32 and ran for few hours and notice many rejected shares and high discarded.
I changed it to queue 8192 and still high rejected rates.

Is there a correct way to calculate this value?

 

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[tim-bc]

By setting the queue value, you are telling your miner the minimum number of work items that it must queue.

The default value is 1, since you can only mine on one work item at a time. There is no practical reason to change this value.