1. Antminer t9 = Miner Status : 12.7 th/s
Slushpool : 10.7 th/s
2. Anminer t9 = Miner Status : 12.9 th/s
Slushpool : 11.2 th/s
Is it normal to have less th/s on slushpool?
slush pool has 3 different hashrates based on different periods.
as mentioned above, you want to look on the daily figure, the other 2 are meaningless to say the least.
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it is very normal to have slightly different numbers from what your miner shows and what the pool shows. but yours is quite a lot
12.7 - 10.7 = 15% of lost hashrate ( provided this is what the daily show)
people have different numbers that they call "okay" some say it's 5% some say 2% . to me anything above 2-3% rings the alarm.
here are the possible reasons of why would you get "lower" hashrate reported by the pool than reported on your local status.
1- stale/bad shares caused by over-clocking your miner
this seems like the most possible scenario , 12.7th for a T9 means you are overclocking to an extend that it's going to fast not caring about the accuracy of the shares ( not really this , but this is the simplest way to put it).
2- your internet connection is bad, latency is high, many shares do not get submitted.
the hashrate on the pool is calcuated based on the shares your miner submit to it, if it does 1 million shares but submit 100 shares only then the pool will calc the speed based on the 100 shares.
3- you are using a server the is far from your location, pick the nearest server to your location.
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i still think no.1 is your problem, you are probably getting a lot of bad shares, Hardware errors.
solution to this would be > reduce the over clocking.
also and most importantly. whatever numbers you are referring to must be on a long enough period, do not look at the current hashrate on your miner, look at the average in say 24 hours, then look at the 1 day hashrate on slush pool, this is what you need to compare.
