sudo_set_adjustment_alpha
Call v138 → current #9Sets the difficulty adjustment smoothing factor for a subnet .
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with sudo_set_adjustment_alpha, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch and modifies storage: SubtensorModule.AdjustmentAlpha, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.
Click items to navigate. Pan and zoom to explore.
Used by: subnet owners
The Big Picture
Alpha controls how much weight is given to recent vs historical registration rates when adjusting difficulty.
Use Cases
- Smoothing difficulty changes
- Preventing difficulty oscillation
Input Parameters
Permissions
Origin
Root
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Caller is root or subnet owner
- Subnet exists
Effects
Storage Modified
Postconditions
- AdjustmentAlpha updated
Side Effects
- Changes difficulty adjustment sensitivity
Code Examples
import { ApiPromise, WsProvider } from "@polkadot/api";
import { stringCamelCase } from "@polkadot/util";
const provider = new WsProvider("wss://entrypoint-finney.opentensor.ai:443");
const api = await ApiPromise.create({ provider });
// Build sudo_set_adjustment_alpha call
const netuid = 1;
const adjustment_alpha = 0;
const call = api.tx[stringCamelCase("AdminUtils")][stringCamelCase("sudo_set_adjustment_alpha")](
netuid,
adjustment_alpha
);Runtime Info
View Source- Pallet Index
- 19
- Call Index
- 9
- First Version
- v138
- Current Version
- v393