59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
// Copyright (C) 2020 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package main
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import (
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"fmt"
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"log"
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"os"
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"text/tabwriter"
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"github.com/syncthing/syncthing/lib/db/backend"
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)
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// account prints key and data size statistics per class
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func account(ldb backend.Backend) {
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it, err := ldb.NewPrefixIterator(nil)
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if err != nil {
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log.Fatal(err)
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}
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var ksizes [256]int
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var dsizes [256]int
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var counts [256]int
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var max [256]int
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for it.Next() {
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key := it.Key()
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t := key[0]
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ds := len(it.Value())
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ks := len(key)
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s := ks + ds
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counts[t]++
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ksizes[t] += ks
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dsizes[t] += ds
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if s > max[t] {
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max[t] = s
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}
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}
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tw := tabwriter.NewWriter(os.Stdout, 1, 1, 1, ' ', tabwriter.AlignRight)
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toti, totds, totks := 0, 0, 0
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for t := range ksizes {
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if ksizes[t] > 0 {
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// yes metric kilobytes 🤘
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fmt.Fprintf(tw, "0x%02x:\t%d items,\t%d KB keys +\t%d KB data,\t%d B +\t%d B avg,\t%d B max\t\n", t, counts[t], ksizes[t]/1000, dsizes[t]/1000, ksizes[t]/counts[t], dsizes[t]/counts[t], max[t])
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toti += counts[t]
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totds += dsizes[t]
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totks += ksizes[t]
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}
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}
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fmt.Fprintf(tw, "Total\t%d items,\t%d KB keys +\t%d KB data.\t\n", toti, totks/1000, totds/1000)
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tw.Flush()
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}
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