+import { cpus } from 'node:os'
import { DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS } from '../../utils'
import type { IPool } from '../pool'
import type { IWorker } from '../worker'
import type {
IWorkerChoiceStrategy,
- RequiredStatistics,
+ TaskStatistics,
WorkerChoiceStrategyOptions
} from './selection-strategies-types'
*/
private toggleFindLastFreeWorkerNodeKey: boolean = false
/** @inheritDoc */
- public readonly requiredStatistics: RequiredStatistics = {
+ public readonly taskStatistics: TaskStatistics = {
runTime: false,
avgRunTime: false,
medRunTime: false,
waitTime: false,
avgWaitTime: false,
- medWaitTime: false
+ medWaitTime: false,
+ elu: false
}
/**
this.choose = this.choose.bind(this)
}
- protected setRequiredStatistics (opts: WorkerChoiceStrategyOptions): void {
- if (this.requiredStatistics.avgRunTime && opts.medRunTime === true) {
- this.requiredStatistics.avgRunTime = false
- this.requiredStatistics.medRunTime = opts.medRunTime as boolean
+ protected setTaskStatistics (opts: WorkerChoiceStrategyOptions): void {
+ if (this.taskStatistics.avgRunTime && opts.medRunTime === true) {
+ this.taskStatistics.avgRunTime = false
+ this.taskStatistics.medRunTime = opts.medRunTime as boolean
}
- if (this.requiredStatistics.medRunTime && opts.medRunTime === false) {
- this.requiredStatistics.avgRunTime = true
- this.requiredStatistics.medRunTime = opts.medRunTime as boolean
+ if (this.taskStatistics.medRunTime && opts.medRunTime === false) {
+ this.taskStatistics.avgRunTime = true
+ this.taskStatistics.medRunTime = opts.medRunTime as boolean
}
- if (this.requiredStatistics.avgWaitTime && opts.medWaitTime === true) {
- this.requiredStatistics.avgWaitTime = false
- this.requiredStatistics.medWaitTime = opts.medWaitTime as boolean
+ if (this.taskStatistics.avgWaitTime && opts.medWaitTime === true) {
+ this.taskStatistics.avgWaitTime = false
+ this.taskStatistics.medWaitTime = opts.medWaitTime as boolean
}
- if (this.requiredStatistics.medWaitTime && opts.medWaitTime === false) {
- this.requiredStatistics.avgWaitTime = true
- this.requiredStatistics.medWaitTime = opts.medWaitTime as boolean
+ if (this.taskStatistics.medWaitTime && opts.medWaitTime === false) {
+ this.taskStatistics.avgWaitTime = true
+ this.taskStatistics.medWaitTime = opts.medWaitTime as boolean
}
}
/** @inheritDoc */
public setOptions (opts: WorkerChoiceStrategyOptions): void {
opts = opts ?? DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
- this.setRequiredStatistics(opts)
+ this.setTaskStatistics(opts)
this.opts = opts
}
* @returns The worker task runtime.
*/
protected getWorkerTaskRunTime (workerNodeKey: number): number {
- return this.requiredStatistics.medRunTime
+ return this.taskStatistics.medRunTime
? this.pool.workerNodes[workerNodeKey].tasksUsage.medRunTime
: this.pool.workerNodes[workerNodeKey].tasksUsage.avgRunTime
}
+ /**
+ * Gets the worker task wait time.
+ * If the required statistics are `avgWaitTime`, the average wait time is returned.
+ * If the required statistics are `medWaitTime`, the median wait time is returned.
+ *
+ * @param workerNodeKey - The worker node key.
+ * @returns The worker task wait time.
+ */
+ protected getWorkerWaitTime (workerNodeKey: number): number {
+ return this.taskStatistics.medWaitTime
+ ? this.pool.workerNodes[workerNodeKey].tasksUsage.medWaitTime
+ : this.pool.workerNodes[workerNodeKey].tasksUsage.avgWaitTime
+ }
+
+ protected computeDefaultWorkerWeight (): number {
+ let cpusCycleTimeWeight = 0
+ for (const cpu of cpus()) {
+ // CPU estimated cycle time
+ const numberOfDigits = cpu.speed.toString().length - 1
+ const cpuCycleTime = 1 / (cpu.speed / Math.pow(10, numberOfDigits))
+ cpusCycleTimeWeight += cpuCycleTime * Math.pow(10, numberOfDigits)
+ }
+ return Math.round(cpusCycleTimeWeight / cpus().length)
+ }
+
/**
* Finds the first free worker node key based on the number of tasks the worker has applied.
*