EDIT: it's --skip-stale-work
This option is only for pools that give a penalty for stale/invalid shares. F.ex the Supernova pool. Every time you see a skipped solution, you loose hashrate poolside. Supporting p2p pools is difficult because of the rapid difficulty changes and low difficulty. It requires tuning and codechanges to perform well. For low difficulty you usually need low intensity. A high intensity meens that you give the gpu alot of solutions to search for in each bulk and this can take a few seconds to complete. This approach is good for solomining and high difficulty, but not good for rapid difficulty changes and pools with low diff.
Okay I see.
We ran into some issue with SPminer on the p2pool after a while as well. For some reason after a long time the ping goes crazy high.
I did a lot of trouble shooting, and the only thing that fixed it was using a different miner.
The issue is strange though, it only seems to happen with spminer if I am running a p2pool on the same network? I tried connecting to hashalot as well and ended up with the same high ping after a while.
If I use SPminer without p2pool running on the same network there is no issue, I am so confused?
Setup is p2pool and one miner on one machine, then another miner on a different machine, pointing to the local p2pool.