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Log Growth Tracker

Growth rate, trend, and the forecast to disk full.

Runs entirely in your browser — nothing leaves this page.
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About Log Growth Tracker

Disks fill up on a schedule, not all at once. Log Growth Tracker takes a series of size samples for a log file and computes the growth rate, the trend, and — if you give it a cap — how soon you will hit it.

Catch the disk-fill incident next week, this week.

Features

  • Growth rate — per hour and per day.
  • Trend detection — growing / shrinking / flat.
  • Capacity forecast — ETA to a size cap.
  • Raw + humanized — bytes and KiB/MiB.
  • Per-sample table — deltas between points.

How to Use

  1. Paste size samples: timestamp + bytes.
  2. Cap (optional) — enter a max size in bytes.
  3. Track. Rate, trend and ETA appear.
  4. Copy the report.

Examples

Example 1 — Disk forecast. A 20 GB disk, a 2 GB log, 400 MB/day growth → ETA of four and a half days. Schedule the rotation now.

Example 2 — Rotation proof. Rotation at midnight shows as a shrinking trend; anything else deserves a share of the report.

Example 3 — Cost guard. Projected monthly size prevents paying for storage you did not budget.

Benefits

  • Predict before it breaks — ETA to cap.
  • Instant rate — per hour/day.
  • Trend clarity — direction in one line.
  • Private — all in-browser.

Frequently Asked Questions

What input does it expect?
A time series of file sizes — one "ISO timestamp SIZE" per line, e.g. from a cron that runs ls -l or stat --format=%s each hour.
What does it compute?
First/last size, total growth over the window, effective growth rate per hour and per day, and the trend direction.
How does the capacity forecast work?
Paste a size cap in bytes. Given the hourly growth rate, it estimates how long until you cross the cap and when.
Can it analyze shrinking files?
Yes — the trend flips to shrinking and the projection pauses with a warning.
Any size formatting?
Values are shown raw in bytes plus humanized (KiB/MiB/GiB) throughout.