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package main
import (
"os"
"sync"
"time"
)
func getBatchSize(parallel int) (int, error) {
batchSize := parallel
if batchSize < 1 {
// Detect the number of parallel actions
cpus, err := os.ReadDir("/sys/bus/cpu/devices")
if err != nil {
return -1, err
}
batchSize = len(cpus)
}
return batchSize, nil
}
func processBatch(count int, batchSize int, process func(index int, wg *sync.WaitGroup)) time.Duration {
batches := count / batchSize
remainder := count % batchSize
processed := 0
wg := sync.WaitGroup{}
nextStat := batchSize
logf("Batch processing start")
timeStart := time.Now()
for range batches {
for range batchSize {
wg.Add(1)
go process(processed, &wg)
processed++
}
wg.Wait()
if processed >= nextStat {
interval := time.Since(timeStart).Seconds()
logf("Processed %d containers in %.3fs (%.3f/s)", processed, interval, float64(processed)/interval)
nextStat = nextStat * 2
}
}
for range remainder {
wg.Add(1)
go process(processed, &wg)
processed++
}
wg.Wait()
timeEnd := time.Now()
duration := timeEnd.Sub(timeStart)
logf("Batch processing completed in %.3fs", duration.Seconds())
return duration
}
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