Ryan Malloy 8eb19f7534 Phase 34: Scaling benchmarks (1k/10k/100k rows; 5/20/50 cols) (2026.05.05.8) ...

Adds tests/benchmarks/test_scaling_perf.py with parametrized
benchmarks across row-count, column-width, and type-mix axes.
Caught the NFETCH-loop bug (Phase 35) immediately on first run.

Headline numbers:

Bulk insert (executemany in transaction):
  1k rows:   23 ms (23 us/row)
  10k rows:  161 ms (16 us/row)
  100k rows: 1487 ms (15 us/row, ~67k rows/sec sustained)

SELECT (linear scaling, near-constant per-row):
  1k rows:   2.7 ms (2.7 us/row)
  10k rows:  25.8 ms (2.6 us/row)
  100k rows: 271 ms (2.7 us/row)

Wide-row SELECT (1k rows x N cols):
  5 cols:  2.4 ms
  20 cols: 5.1 ms
  50 cols: 10.1 ms

Type-mix SELECT (INT + VARCHAR + DECIMAL + DATE + FLOAT + SMALLINT):
  1000 rows: 4.7 ms (4.7 us/row, ~1.7x baseline)

Per-row codec cost is essentially constant from 1k to 100k rows
(2.7 us/row), proving parse_tuple_payload optimizations (Phases
23-25) hold at 100x scale with no GC-pause amplification or
memory-pressure degradation.

Per-row insert cost actually DECREASES with scale (23us at 1k to
15us at 100k) - Phase 33's pipelining amortizes prepare/release
overhead better at larger N.

10 new parametrized benchmarks. Total: 77 unit + 249 integration +
43 benchmark = 369 tests.

2026-05-05 12:38:07 -06:00

..

benchmarks

Phase 34: Scaling benchmarks (1k/10k/100k rows; 5/20/50 cols) (2026.05.05.8)

2026-05-05 12:38:07 -06:00

reference

Phase 9: smart-LOB BLOB/CLOB locator decoding (Phase 10 deferred for fetch)

2026-05-04 13:26:15 -06:00

__init__.py

Phase 1: pure-Python SQLI login works end-to-end

2026-05-02 19:10:24 -06:00

_proxy.py

Phase 19: resilience tests via fault injection (v2026.05.04.3)

2026-05-04 16:57:06 -06:00

conftest.py

Phase 7: real transaction semantics on logged databases

2026-05-04 12:54:02 -06:00

docker-compose.yml

Phase 1: pure-Python SQLI login works end-to-end

2026-05-02 19:10:24 -06:00

test_aio.py

Phase 16: async API (informix_db.aio)

2026-05-04 14:58:19 -06:00

test_blob_locator_unit.py

Phase 9: smart-LOB BLOB/CLOB locator decoding (Phase 10 deferred for fetch)

2026-05-04 13:26:15 -06:00

test_blob.py

Phase 8: BYTE/TEXT bind+read via SQ_BBIND/SQ_BLOB/SQ_FETCHBLOB

2026-05-04 13:13:55 -06:00

test_composite_types.py

Phase 12: ROW / COLLECTION type recognition

2026-05-04 14:30:44 -06:00

test_datetime.py

Phase 6.c: DATE / DATETIME / DECIMAL parameter encoding

2026-05-04 12:09:16 -06:00

test_decimal.py

Phase 6.c: DATE / DATETIME / DECIMAL parameter encoding

2026-05-04 12:09:16 -06:00

test_dml.py

Phase 7: real transaction semantics on logged databases

2026-05-04 12:54:02 -06:00

test_errors.py

Phase 7: real transaction semantics on logged databases

2026-05-04 12:54:02 -06:00

test_executemany_pipeline.py

Phase 33: Pipelined executemany - 2.85x faster bulk insert (2026.05.05.6)

2026-05-05 12:26:15 -06:00

test_fastpath.py

Phase 13: SQ_FPROUTINE / SQ_EXFPROUTINE fast-path RPC

2026-05-04 14:36:21 -06:00

test_interval_encode.py

Phase 6.e: INTERVAL parameter encoding

2026-05-04 12:30:48 -06:00

test_interval_unit.py

Phase 6.d: INTERVAL decoding (both qualifier families)

2026-05-04 12:22:07 -06:00

test_interval.py

Phase 6.d: INTERVAL decoding (both qualifier families)

2026-05-04 12:22:07 -06:00

test_nulls.py

Phase 4.x: parameterized SELECT, NULL row decoding, executemany()

2026-05-04 11:11:50 -06:00

test_params.py

Phase 8: BYTE/TEXT bind+read via SQ_BBIND/SQ_BLOB/SQ_FETCHBLOB

2026-05-04 13:13:55 -06:00

test_pdu_match.py

Phase 2: SELECT works end-to-end — pure-Python Informix fully reads data

2026-05-03 15:37:10 -06:00

test_pool.py

Phase 29: Deferred-cleanup queue (2026.05.05.3)

2026-05-05 10:47:49 -06:00

test_protocol.py

Phase 30: Final hardening pass (2026.05.05.4)

2026-05-05 10:52:39 -06:00

test_resilience.py

Phase 19: resilience tests via fault injection (v2026.05.04.3)

2026-05-04 16:57:06 -06:00

test_resultset_invariants.py

Phase 25: Branch reorder + invariant tripwires (2026.05.04.10)

2026-05-04 23:34:05 -06:00

test_scroll_cursor_server.py

Phase 18: server-side scrollable cursors via SQ_SFETCH (v2026.05.04.2)

2026-05-04 16:41:25 -06:00

test_scroll_cursor.py

Phase 17: scroll cursor API (v2026.05.04.1)

2026-05-04 15:51:24 -06:00

test_select.py

Phase 2.x: VARCHAR row decoding works — three byte-level fixes

2026-05-04 07:55:13 -06:00

test_smart_lob_read.py

Phase 11: smart-LOB BLOB/CLOB write via SQ_FILE / filetoblob

2026-05-04 14:14:37 -06:00

test_smart_lob_write.py

Phase 28: Resource leak hardening (2026.05.05.2)

2026-05-05 03:56:24 -06:00

test_smart_lob.py

Phase 11: smart-LOB BLOB/CLOB write via SQ_FILE / filetoblob

2026-05-04 14:14:37 -06:00

test_smoke.py

Phase 4: parameter binding (SQ_BIND) — int, float, str, bool, None

2026-05-04 10:54:32 -06:00

test_tls.py

Phase 14: TLS / SSL transport

2026-05-04 14:46:53 -06:00

test_transactions.py

Phase 7: real transaction semantics on logged databases

2026-05-04 12:54:02 -06:00

test_unicode.py

Phase 20: UTF-8/multibyte locale support (2026.05.04.4)

2026-05-04 17:13:19 -06:00