open-webui-openwebui/backend/open_webui
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perf: build info log messages lazily so raising the log level actually saves work (#27837)
Raising GLOBAL_LOG_LEVEL to WARNING buys quieter output but not less work: 241 INFO call sites interpolate their payload into an f-string before the logging call gets to drop it. The heaviest is get_doc, which logs every chunk id and metadata dict in a collection, so on the full-context retrieval path that is the entire knowledge base, once per chat request.

That one line at WARNING, CPython 3.12:

| knowledge base | payload | before   | after   |
| -------------- | ------- | -------- | ------- |
| top-k of 3     | 1.2 kB  | 3.8 us   | 0.07 us |
| 500 chunks     | 201 kB  | 583.6 us | 0.08 us |
| 5000 chunks    | 2.0 MB  | 5.8 ms   | 0.15 us |

The lazy form log.info('query_doc:result %s %s', result.ids, result.metadatas) hands the payload to record.getMessage(), which the InterceptHandler only reaches once a record has passed the level check. Output at INFO is byte-identical. Two sites that already built their message eagerly, one str concat and one % operator, move to the same lazy form.
2026-08-02 15:39:10 -05:00
..
data refac: mv backend files to /open_webui dir 2024-09-04 16:54:48 +02:00
internal refac 2026-07-31 17:41:14 -04:00
migrations perf: index group_member on (user_id, group_id) (#27822) 2026-07-31 19:09:15 -05:00
models perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
retrieval perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
routers perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
socket perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
static refac 2026-07-27 19:39:36 -04:00
storage refac 2026-07-31 17:41:14 -04:00
tools refac 2026-07-31 17:41:14 -04:00
utils perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
__init__.py refac 2026-07-27 19:39:36 -04:00
alembic.ini fix: Alembic CLI commands from failing 2025-08-15 04:17:47 -04:00
config.py perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
constants.py refac 2026-07-27 19:39:36 -04:00
env.py perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
events.py refac 2026-07-27 19:39:36 -04:00
functions.py perf: build debug log messages lazily so disabled debug logs cost nothing (#27834) 2026-07-31 19:09:01 -05:00
main.py perf: build info log messages lazily so raising the log level actually saves work (#27837) 2026-08-02 15:39:10 -05:00
tasks.py refac 2026-07-31 17:41:14 -04:00