Polkadot People Chain

[joepetrowski]

Polkadot People Chain

To verify prior to release: People Chain poke_deposit weight must be less than 2x Relay's. E.g.:

>>> weight_per_nano = 1_000
>>> relay_read = 20_499 * weight_per_nano
>>> relay_write = 83_471 * weight_per_nano
>>> para_read = 25_000 * weight_per_nano
>>> para_write = 100_000 * weight_per_nano
>>>
>>> def relay():
...     time = 145_781_000 + (3 * relay_read) + (3 * relay_write)
...     pov = 11_037
...     return (time, pov)
...
>>> def para():
...     time = 52_060_000 + (3 * para_read) + (3 * para_write)
...     pov = 6_723
...     return (time, pov)
...
>>>
>>> (relay_time, relay_pov) = relay()
>>> (para_time, para_pov) = para()
>>>
>>> (2 * relay_time) > para_time
True
>>> (2 * relay_pov) > para_pov
True

[github-actions[bot]]

Review required! Latest push from author must always be reviewed

[bkontur]

Looking ready, just a few small things below. people-polkadot is also missing from runtimes-matrix.json.

I also didn't check the weights as they seem to be unchanged from people-kusama. Will you run the benchmarks in this PR or elsewhere? Would be a good check to make sure the factor of two is sufficient between relay and para in case the ratio is very different on Polkadot

@joepetrowski @seadanda fresh weights and fixes are ready here: https://github.com/joepetrowski/runtimes/pull/2

[joepetrowski]

/merge

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[seadanda]

I found there are too many duplicated code for a new system parachain. This is a code smell and should be addressed at some stage. We will have more system parachains and we need to reduce the overhead of making one before making more system parachains.

@xlc would be good to get your input on https://github.com/paritytech/polkadot-sdk/issues/4815 as a first step towards minimising the diff between system parachains