sudo_set_subnet_moving_alpha
Call v244 → current #63Sets the moving alpha parameter for subnet emission calculations.
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with sudo_set_subnet_moving_alpha, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch and modifies storage: SubtensorModule.SubnetMovingAlpha, and finally post-dispatch where ExtrinsicSuccess is emitted and fees are settled.
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Used by: subnet owners
The Big Picture
Controls how quickly subnet emission shares adjust based on performance. Higher alpha means slower changes.
Use Cases
- Tuning emission distribution
- Smoothing subnet rewards
Input Parameters
| # | Name | Type | Description |
|---|---|---|---|
| 0 | alpha | FixedI128 | alpha (FixedI128) |
Permissions
Origin
Root
Required Role
Permission data inferred from metadata. May be incomplete.
Requirements
- Caller is root account
Effects
Storage Modified
Postconditions
- SubnetMovingAlpha updated
Side Effects
- Affects emission smoothing across subnets
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_subnet_moving_alpha call
const alpha = 0 as any /* FixedI128 */;
const call = api.tx[stringCamelCase("AdminUtils")][stringCamelCase("sudo_set_subnet_moving_alpha")](
alpha
);Runtime Info
View Source- Pallet Index
- 19
- Call Index
- 63
- First Version
- v244
- Current Version
- v393