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perf: import heavy optional dependencies on first use (#1377)

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A GENETIC server with external (import) providers and EOSdash disabled
loads several large packages at start that it never uses, which costs
a noticeable part of the memory on 512 MB boards:

- matplotlib via the GENETIC/GENETIC0 PDF report modules (server/eos.py)
- statsmodels via the Holt-Winters fallback in prediction/priceabc.py
- pvlib via the weather base class and the pvlib-based providers
- bs4/lxml via the ClearOutside provider
- scipy via the self-consumption interpolator singletons, which were
  loaded at import time
- the GENETIC0 optimizer, imported by core/ems.py
- tzfpy, whose polygon data the computed general.timezone loads

Import these where they are used. The interpolator tables are loaded
on first use (thread-safe). Nothing changes in what is computed.

general.timezone is computed from latitude/longitude and cannot be set.
Add general.timezone_override (IANA name, validated with pendulum):
when set, general.timezone returns it and the lookup is skipped. When
unset (default) the lookup is unchanged.

Tests that patched the moved names now patch them at their source.
A new test starts the server module in a subprocess and checks that
none of these modules is loaded.

Co-authored-by: Christin <christin@BigBrother.bikini.bottom.zone>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Christin
2026-10-11 08:40:43 +02:00
committed by GitHub
co-authored by Christin Claude Opus 5.5
parent 6d26252c6a
commit 3651d33915
21 changed files with 295 additions and 47 deletions
Download Patch File Download Diff File Expand all files Collapse all files
docs/_generated/configexample.md
+2 -1
View File
@@ -210,7 +210,8 @@
"data_folder_path": "/home/user/.local/share/net.akkudoktoreos.net",
"data_output_subpath": "output",
"latitude": 52.52,
"longitude": 13.405
"longitude": 13.405,
"timezone_override": null
},
"load": {
"provider": "LoadAkkudoktor",
docs/_generated/configgeneral.md
+5 -2
View File
@@ -17,7 +17,8 @@
| home_assistant_addon | `EOS_GENERAL__HOME_ASSISTANT_ADDON` | `bool` | `rw` | `required` | EOS is running as home assistant add-on. |
| latitude | `EOS_GENERAL__LATITUDE` | `Optional[float]` | `rw` | `52.52` | Latitude in decimal degrees between -90 and 90. North is positive (ISO 19115) (°) |
| longitude | `EOS_GENERAL__LONGITUDE` | `Optional[float]` | `rw` | `13.405` | Longitude in decimal degrees within -180 to 180 (°) |
| timezone | | `Optional[str]` | `ro` | `N/A` | Computed timezone based on latitude and longitude. |
| timezone | | `Optional[str]` | `ro` | `N/A` | Timezone: 'timezone_override' if set, else looked up from latitude and longitude. |
| timezone_override | `EOS_GENERAL__TIMEZONE_OVERRIDE` | `Optional[str]` | `rw` | `None` | IANA timezone name, e.g. 'Europe/Berlin'. If set, 'timezone' is this value instead of the timezone looked up from latitude and longitude, and the lookup data (~25 MB) is never loaded. Defaults to None (look up). |
| version | `EOS_GENERAL__VERSION` | `Optional[str]` | `rw` | `None` | Configuration file version. |
:::
<!-- pyml enable line-length -->
@@ -36,7 +37,8 @@
"data_folder_path": "/home/user/.local/share/net.akkudoktoreos.net",
"data_output_subpath": "output",
"latitude": 52.52,
"longitude": 13.405
"longitude": 13.405,
"timezone_override": null
}
}
```
@@ -57,6 +59,7 @@
"data_output_subpath": "output",
"latitude": 52.52,
"longitude": 13.405,
"timezone_override": null,
"timezone": "Europe/Berlin",
"data_output_path": "/home/user/.local/share/net.akkudoktoreos.net/output",
"config_folder_path": "/home/user/.config/net.akkudoktoreos.net",