Explore the costs and benefits of Ouroborous Leios
WARNING: This is a very preliminary tool for estimating the costs of running Leios nodes. At this point, it is really just useful for structuring thinking about Leios costs and making some very rough calculations for guiding further study. The Leios R&D task aims to refine both the inputs to models like this and the cost model itself. Also note that the design of the Leios protocol itself is under revision. Ask questions on Discord or report problems on GitHub.
| Leios inputs | ||||
|---|---|---|---|---|
| Leios protocol | Variant ⓘ | |||
| Phases ⓘ | phase/pipeline | |||
| Phase length ⓘ | slot/phase | |||
| IB rate ⓘ | IB/slot | |||
| EB rate ⓘ | EB/pipeline | |||
| Mean votes ⓘ | vote/pipeline | |||
| Certificate rate ⓘ | cert/pipeline | |||
| Leios assumptions | Transaction rate ⓘ | tx/s | ||
| IB ⓘ | Size ⓘ | kB/IB | ||
| IO ⓘ | IO/IB | |||
| Build ⓘ | vCPU*ms/IB | |||
| Verify ⓘ | vCPU*ms/IB | |||
| EB ⓘ | IB reference ⓘ | kB/IB | ||
| Size ⓘ | kB/EB | |||
| IO ⓘ | IO/EB | |||
| Build ⓘ | vCPU*ms/EB | |||
| Verify ⓘ | vCPU*ms/EB | |||
| Vote ⓘ | Size ⓘ | kB/vote | ||
| IO ⓘ | IO/vote | |||
| Build ⓘ | vCPU*ms/vote | |||
| Verify ⓘ | vCPU*ms/vote | |||
| Certificate ⓘ | Size ⓘ | kB/cert | ||
| IO ⓘ | IO/cert | |||
| Build ⓘ | vCPU*ms/cert | |||
| Verify ⓘ | vCPU*ms/cert | |||
| Other inputs | ||||
|---|---|---|---|---|
| Praos protocol | Slot length ⓘ | slot/s | ||
| Active slot coefficient ⓘ | RB/slot | |||
| Praos assumptions | Transaction rate ⓘ | tx/s | ||
| RB ⓘ | Size ⓘ | kB/RB | ||
| IO ⓘ | IO/RB | |||
| Build ⓘ | vCPU*ms/RB | |||
| Verify ⓘ | vCPU*ms/RB | |||
| Current ledger size ⓘ | GB | |||
| Costs ⓘ ⓘ |
vCPU ⓘ | USD/vCPU/month | ||
| Storage ⓘ | USD/GB/month | |||
| IOPS ⓘ | USD/(IO/s)/month | |||
| Network egress ⓘ | USD/GB | |||
| Discount rate ⓘ | Amortize? ⓘ | %/year | ||
| Stakepools | Block producers ⓘ | nodes | ||
| Relays ⓘ | nodes | |||
| Upstream peer equivalents ⓘ | nodes | |||
| Downstream peer equivalents ⓘ | nodes | |||
| Design factor for spikes ⓘ | %/100 | |||
| Fraction of stake ⓘ | % | |||
| Retained fees ⓘ | % | |||
| Scenario assumptions | Transaction | Mean size ⓘ | kB/tx | |
| Verify ⓘ | vCPU*ms/tx | |||
| Fee per byte ⓘ | ADA/kB | |||
| Storage compression ⓘ | % | |||
| Price of ada ⓘ | USD/ADA | |||
| Estimates | ||||
|---|---|---|---|---|
| Resources | Compute ⓘ | ? | vCPU/month | |
| Disk ⓘ | ? | GB/month | ||
| IOPS ⓘ | ? | IO/s/month | ||
| Network egress ⓘ | ? | GB/month | ||
| Network interface ⓘ | ? | Gb/s/month | ||
| Costs | Compute ⓘ | ? | USD/month | |
| Disk (amortized) ⓘ | ? | USD/month | ||
| IOPS ⓘ | ? | USD/month | ||
| Network egress ⓘ | ? | USD/month | ||
| Total ⓘ | ? | USD/month | ||
| Metrics | Cost per transaction ⓘ | ? | USD/tx | |
| ? | ADA/tx | |||
| Retained fees ⓘ | ? | USD/month | ||
| Retained fees − cost ⓘ | ? | USD/month | ||
| Retained fees ÷ cost ⓘ | ? | % | ||