+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,
+ TaskStatisticsRequirements,
WorkerChoiceStrategyOptions
} from './selection-strategies-types'
*/
private toggleFindLastFreeWorkerNodeKey: boolean = false
/** @inheritDoc */
- public readonly requiredStatistics: RequiredStatistics = {
- runTime: false,
- avgRunTime: false,
- medRunTime: false
+ public readonly taskStatisticsRequirements: TaskStatisticsRequirements = {
+ runTime: {
+ aggregate: false,
+ average: false,
+ median: false
+ },
+ waitTime: {
+ aggregate: false,
+ average: false,
+ median: false
+ },
+ elu: {
+ aggregate: false,
+ average: false,
+ median: false
+ }
}
/**
this.choose = this.choose.bind(this)
}
- protected checkOptions (opts: WorkerChoiceStrategyOptions): void {
- if (this.requiredStatistics.avgRunTime && opts.medRunTime === true) {
- this.requiredStatistics.avgRunTime = false
- this.requiredStatistics.medRunTime = opts.medRunTime as boolean
+ protected setTaskStatisticsRequirements (
+ opts: WorkerChoiceStrategyOptions
+ ): void {
+ if (
+ this.taskStatisticsRequirements.runTime.average &&
+ opts.runTime?.median === true
+ ) {
+ this.taskStatisticsRequirements.runTime.average = false
+ this.taskStatisticsRequirements.runTime.median = opts.runTime
+ .median as boolean
}
- if (this.requiredStatistics.medRunTime && opts.medRunTime === false) {
- this.requiredStatistics.avgRunTime = true
- this.requiredStatistics.medRunTime = opts.medRunTime as boolean
+ if (
+ this.taskStatisticsRequirements.runTime.median &&
+ opts.runTime?.median === false
+ ) {
+ this.taskStatisticsRequirements.runTime.average = true
+ this.taskStatisticsRequirements.runTime.median = opts.runTime
+ .median as boolean
}
if (
- opts.weights != null &&
- Object.keys(opts.weights).length < this.pool.size
+ this.taskStatisticsRequirements.waitTime.average &&
+ opts.waitTime?.median === true
) {
- throw new Error(
- 'Worker choice strategy options must have a weight for each worker node.'
- )
+ this.taskStatisticsRequirements.waitTime.average = false
+ this.taskStatisticsRequirements.waitTime.median = opts.waitTime
+ .median as boolean
+ }
+ if (
+ this.taskStatisticsRequirements.waitTime.median &&
+ opts.waitTime?.median === false
+ ) {
+ this.taskStatisticsRequirements.waitTime.average = true
+ this.taskStatisticsRequirements.waitTime.median = opts.waitTime
+ .median as boolean
+ }
+ if (
+ this.taskStatisticsRequirements.elu.average &&
+ opts.elu?.median === true
+ ) {
+ this.taskStatisticsRequirements.elu.average = false
+ this.taskStatisticsRequirements.elu.median = opts.elu.median as boolean
+ }
+ if (
+ this.taskStatisticsRequirements.elu.median &&
+ opts.elu?.median === false
+ ) {
+ this.taskStatisticsRequirements.elu.average = true
+ this.taskStatisticsRequirements.elu.median = opts.elu.median as boolean
}
}
/** @inheritDoc */
public setOptions (opts: WorkerChoiceStrategyOptions): void {
opts = opts ?? DEFAULT_WORKER_CHOICE_STRATEGY_OPTIONS
- this.checkOptions(opts)
+ this.setTaskStatisticsRequirements(opts)
this.opts = opts
}
return this.findFirstFreeWorkerNodeKey()
}
+ /**
+ * Gets the worker task runtime.
+ * If the task statistics require the average runtime, the average runtime is returned.
+ * If the task statistics require the median runtime , the median runtime is returned.
+ *
+ * @param workerNodeKey - The worker node key.
+ * @returns The worker task runtime.
+ */
+ protected getWorkerTaskRunTime (workerNodeKey: number): number {
+ return this.taskStatisticsRequirements.runTime.median
+ ? this.pool.workerNodes[workerNodeKey].workerUsage.runTime.median
+ : this.pool.workerNodes[workerNodeKey].workerUsage.runTime.average
+ }
+
+ /**
+ * Gets the worker task wait time.
+ * If the task statistics require the average wait time, the average wait time is returned.
+ * If the task statistics require the median wait time, the median wait time is returned.
+ *
+ * @param workerNodeKey - The worker node key.
+ * @returns The worker task wait time.
+ */
+ protected getWorkerTaskWaitTime (workerNodeKey: number): number {
+ return this.taskStatisticsRequirements.waitTime.median
+ ? this.pool.workerNodes[workerNodeKey].workerUsage.runTime.median
+ : this.pool.workerNodes[workerNodeKey].workerUsage.runTime.average
+ }
+
+ /**
+ * Gets the worker task ELU.
+ * If the task statistics require the average ELU, the average ELU is returned.
+ * If the task statistics require the median ELU, the median ELU is returned.
+ *
+ * @param workerNodeKey - The worker node key.
+ * @returns The worker task ELU.
+ */
+ protected getWorkerTaskElu (workerNodeKey: number): number {
+ return this.taskStatisticsRequirements.elu.median
+ ? this.pool.workerNodes[workerNodeKey].workerUsage.elu.active.median
+ : this.pool.workerNodes[workerNodeKey].workerUsage.elu.active.average
+ }
+
+ 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.
*
- * If a worker is found with `0` running tasks, it is detected as free and its worker node key is returned.
+ * If a worker is found with `0` executing tasks, it is detected as free and its worker node key is returned.
*
* If no free worker is found, `-1` is returned.
*
*/
private findFirstFreeWorkerNodeKey (): number {
return this.pool.workerNodes.findIndex(workerNode => {
- return workerNode.tasksUsage.running === 0
+ return workerNode.workerUsage.tasks.executing === 0
})
}
/**
* Finds the last free worker node key based on the number of tasks the worker has applied.
*
- * If a worker is found with `0` running tasks, it is detected as free and its worker node key is returned.
+ * If a worker is found with `0` executing tasks, it is detected as free and its worker node key is returned.
*
* If no free worker is found, `-1` is returned.
*
private findLastFreeWorkerNodeKey (): number {
// It requires node >= 18.0.0:
// return this.workerNodes.findLastIndex(workerNode => {
- // return workerNode.tasksUsage.running === 0
+ // return workerNode.workerUsage.tasks.executing === 0
// })
- for (let i = this.pool.workerNodes.length - 1; i >= 0; i--) {
- if (this.pool.workerNodes[i].tasksUsage.running === 0) {
- return i
+ for (
+ let workerNodeKey = this.pool.workerNodes.length - 1;
+ workerNodeKey >= 0;
+ workerNodeKey--
+ ) {
+ if (
+ this.pool.workerNodes[workerNodeKey].workerUsage.tasks.executing === 0
+ ) {
+ return workerNodeKey
}
}
return -1
repositories / poolifier.git / blobdiff