Changes

Page history
clarify os releases support ranges authored by anarcat's avatar anarcat
Show whitespace changes
Inline Side-by-side
howto/upgrades.md
View page @ be2aef75
...@@ -48,13 +48,43 @@ of Debian over time since data collection started in 2019. ...@@ -48,13 +48,43 @@ of Debian over time since data collection started in 2019.
The above graph currently covers 5 different releases: The above graph currently covers 5 different releases:
| Suite | Start | End | Upgrade time | 3-release Overlap | | Version | Suite | Start | End | Lifetime |
|----------|------------|------------|-----------------------|------------------------| |---------|------------|------------|------------|-----------------------|
| jessie | N/A | 2020-04-15 | N/A | N/A | | 8 | `jessie` | N/A | 2020-04-15 | N/A |
| stretch | N/A | 2021-11-17 | 2 years (28 months) | 3 months | | 9 | `stretch` | N/A | 2021-11-17 | 2 years (28 months) |
| buster | 2019-08-15 | 2024-11-14 | 5 years (63 months) | 18 months | | 10 | `buster` | 2019-08-15 | 2024-11-14 | 5 years (63 months) |
| bullseye | 2021-08-26 | 2024-12-10 | 3 years (40 months) | 19 months | | 11 | `bullseye` | 2021-08-26 | 2024-12-10 | 3 years (40 months) |
| bookworm | 2023-04-08 | TBD | 19 month and counting | 19 months and counting | | 12 | `bookworm` | 2023-04-08 | TBD | 19 month and counting |
We can also count the stretches of time we had to support multiple
releases at once:
| Releases | Count | Date | Duration | Triggering event |
|----------|-------|-------------|-----------|-------------------|
| 8 9 10 | 3 | 2019-08-15 | 8 months | Debian 10 start |
| 9 10 | 2 | 2020-04-15 | 18 months | Debian 8 retired |
| 9 10 11 | 3 | 2021-08-26 | 3 months | Debian 11 start |
| 10 11 | 2 | 2021-11-17 | 17 months | Debian 9 retired |
| 10 11 12 | 3 | 2023-04-08 | 19 months | Debian 12 start |
| 11 12 | 2 | 2024-11-14 | 1 month | Debian 10 retired |
| 12 | 1 | 2024-12-10 | 5 months? | Debian 11 retired |
| 12 13 | 2 | 2025-04-30? | TBD | Debian 13 start |
Or, in total, as of 2025-04-08:
| Count | Duration |
|-------|-----------|
| 3 | 30 months |
| 2 | 36 months |
| 1 | 5 months |
In other words, since we've started tracking those metrics, we've
spend 30 months supporting 3 Debian releases in parallel, and 42
months with less, and only 6 months with one.
We've supported at least two Debian releases for the overwhelming
majority of time we've been performing upgrades, which means we're,
effectively, constantly upgrading Debian.
# Minor upgrades # Minor upgrades
... ...
......