49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
package memtest
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import (
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"runtime"
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"sync"
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"github.com/ncw/rclone/cmd"
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"github.com/ncw/rclone/fs"
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"github.com/spf13/cobra"
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)
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func init() {
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cmd.Root.AddCommand(memtestCmd)
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}
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var memtestCmd = &cobra.Command{
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Use: "memtest remote:path",
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Short: `Load all the objects at remote:path and report memory stats.`,
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Hidden: true,
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Run: func(command *cobra.Command, args []string) {
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cmd.CheckArgs(1, 1, command, args)
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fsrc := cmd.NewFsSrc(args)
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cmd.Run(false, command, func() error {
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objects, _, err := fs.Count(fsrc)
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if err != nil {
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return err
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}
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objs := make([]fs.Object, 0, objects)
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var before, after runtime.MemStats
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runtime.GC()
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runtime.ReadMemStats(&before)
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var mu sync.Mutex
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err = fs.ListFn(fsrc, func(o fs.Object) {
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mu.Lock()
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objs = append(objs, o)
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mu.Unlock()
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})
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if err != nil {
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return err
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}
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runtime.GC()
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runtime.ReadMemStats(&after)
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usedMemory := after.Alloc - before.Alloc
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fs.Log(nil, "%d objects took %d bytes, %.1f bytes/object", len(objs), usedMemory, float64(usedMemory)/float64(len(objs)))
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fs.Log(nil, "System memory changed from %d to %d bytes a change of %d bytes", before.Sys, after.Sys, after.Sys-before.Sys)
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return nil
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})
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},
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}
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