This guide contains instructions on how to connect to the NOL ("no limit") network (nolnet from now on).
The roles one could play on the nolnet are: Miner, Validator, Transactions Generator. In the following 3 paragraphs we are going to explain how to setup and configure the software needed to play each role.
First thing to remember even if the nol blockchain is in ~/.bitcoin/nol the conf file where to store your custom configuration is ~/.bitcoin/bitcoin.conf
Execute the bitcoind with the -chain_nol flag or set chain_nol=1 in bitcoin.conf
Increase the length of unconfirmed transaction chains to more that 25 in both directions (asc and desc). With this settings we could have chain of 200 txns with a max size of 1002KB.
limitdescendantcount=100
limitdescendantsize=501
limitancestorcount=100
limitancestorsize=501
Set you rpc credential
rpcuser=set-your-user-here
rpcpassword=iset-your-password-here
Activate log debug for xthin
debug=thin
It will be useful to evaluate the performance xthin when propagating big blocks
Get the binaries from the Ubuntu PPA repo, bitcoinunlimted.info or compile from
source using the release branch
Use the same configuration describe in the previous paragraph.
If you are using a pool software to mine make sure it is not enforcing consensus in its code code like:
- max block size
- max number of SigOps per block
For example eloipool hard coded 20K - 512 = 19488 as the maximum number of sigops per block. To change it you need to modify this line
and set sigoplimit to something a lot higher, take into account that BU enforce a 20K SigOps count per MB.
Being able to produce enough transactions to so that to feel bigger blocks you need to use a modified version of BU that enhance the coin selection performances. With a normal BU version or even Core you will be constrained to 1/2 txns per second.
git clone -b coinselection --single-branch --depth 1 https://github.com/gandrewstone/BitcoinUnlimited coinselect
cd coinselect
./autogen.sh
./configure --without-gui
make -j4
Then you need to use txnTest.py to actually generate transactions. Clone the repo where it is stored:
git clone -b master --single-branch --depth 1 https://github.com/gandrewstone/BUtools butools
Since it depends on python bitcoin lib you need to install it before proceeding. To do it you have to ways, the first one is via python pip:
sudo apt-get install pip-python
sudo pip install git+https://github.com/petertodd/python-bitcoinlib/
The second one is via git submodule
cd butools
git submodule init
git submodule update
export PYTHONPATH=. # NB you need this if you're not installing python bitcoin lib in path were python could find it.
# you could add it to your .bashrc to make it permanent
And now you can start generating transactions (this assumes you have nol token in your wallet in one address, or better UTXO)
./txnTest.py nol split #repeat this 3 times
# this will start generating transaction
./txnTest.py nol spam