sudo_set_adjustment_interval
Call v138 → v277, v290 → current #8Sets the difficulty adjustment interval for a subnet .
View calls on chainCall Workflow
This diagram shows the call execution flow: starting with sudo_set_adjustment_interval, passing through validation
(signature, nonce, mortality, fee payment), then pre-dispatch checks, followed by dispatch and modifies storage: SubtensorModule.AdjustmentInterval, 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 often the subnet recalculates registration difficulty based on demand. Shorter intervals mean faster adaptation.
Use Cases
- Tuning difficulty responsiveness
- Smoothing registration curves
From Chain Metadata
The extrinsic sets the adjustment interval for a subnet. It is only callable by the root account, not changeable by the subnet owner. The extrinsic will call the Subtensor pallet to set the adjustment interval.
Input Parameters
Permissions
Origin
Root
Required Role
Requirements
- Caller is root or subnet owner
- Subnet exists
Effects
Storage Modified
Postconditions
- AdjustmentInterval updated
Side Effects
- Changes how often difficulty recalculates
Code Examples
import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443
const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);
// Build sudo_set_adjustment_interval call (typed, named args)
const netuid = 1;
const adjustment_interval = 0;
const tx = api.tx.AdminUtils.sudo_set_adjustment_interval({
netuid,
adjustment_interval,
});Version History
v138 block 1,907,363 2 args
v290 block 5,947,548 2 args Current
Runtime Info
View Source- Pallet Index
- 19
- Call Index
- 8
- First Version
- v138
- Current Version
- v411