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jabber.developer2
b1d820462a
End-to-end performance and correctness harness for the flat-file +
SQLite database backends. Lives in tests/bench/, built only on
demand (`make bench`); not part of `make check`.
Components
gen_history (P1)
Deterministic corpus generator. Knobs: lines, contacts, years,
seed, stanza-id mode (uuid/libpurple/conversations/mixed), LMC
rate, MAM-OOO rate, resources/contact, length profile
(short/mixed/long/extreme). Emits the canonical
flatlog/<account>/<contact>/history.log layout used by
ff_verify_integrity. ~340 LOC.
bench_runner (P1, P2.5)
S1 cold tail-access via sparse index
S2 warm tail-access (page cache hot)
S3 deep pagination (1000 binary-search lookups)
S4 first-time index build (cold file -> ff_state_ensure_fresh)
S5 incremental extend (asserts no full rebuild path)
S6 real ff_verify_integrity over the contact tree
Reports total/err/warn/info issue counts in the CSV note.
bench_long_messages (P2)
L1-L14 long-message stress: 1KB up to 9.9MB bodies, plus
oversized line rejection (10MB+1 -> ff_readline returns ""),
embedded-newline / pipe / emoji body patterns, full parse on
100x1MB, 1000x100KB sustained append.
bench_failure_modes (P3)
F1-F15 failure-injection: truncated last line, mid-file CRLF,
mid-file BOM, LMC cycle, LMC depth>FF_MAX_LMC_DEPTH, manual
': ' in resource, RTL/ZWSP, Latin-1 byte, empty body,
mtime/inode flip, empty file. Each test asserts expected issue
levels and reports PASS/FAIL.
bench_export_import (P5)
Links real database_export.c + database_sqlite.c + database.c
and drives log_database_export_to_flatfile /
log_database_import_from_flatfile under load.
Subcommands: seed, export, import, roundtrip, verify.
S7a/b export, S8a/b import, S8e roundtrip with full byte-by-byte
content diff of every row in (from_jid, to_jid, message,
timestamp, type, stanza_id, archive_id, encryption, replace_id).
Make targets
bench-quick / bench / bench-full
bench-longmsg, bench-failure
bench-multicontact, bench-lmc, bench-ooo
bench-export, bench-import, bench-roundtrip
bench-pipeline, bench-pipeline-max (1M rows)
bench-compare, bench-update-baseline
Volume controls: BENCH_VOLUME (small/medium/max), BENCH_PIPE_ROWS,
BENCH_PIPE_ROWS_MAX, BENCH_DATA_DIR, BENCH_CSV.
Baseline + regression checking (P4)
tests/bench/baseline.csv 51 rows: S1-S6 x {small,lmc,ooo}
+ L1-L14 + F1-F15 (11 of 15) +
S7/S8 x {pipe100k, pipe1M}.
compare_baseline.py median over duplicate rows;
exits 1 on any (scenario, volume)
slowdown >= threshold (default 25%).
Verified at scale
bench-pipeline-max: 1,000,000 rows, full content diff
seed 17 s, export 304 s, import 31 s, idempotent re-import 10 s,
diff 2.7 s -- mismatches=0.
Findings surfaced by the harness
Export scales super-linearly: 4 s @ 100k -> 304 s @ 1M (76x for
10x rows). Cause: g_slist_sort on the merged list + per-row
ProfMessage/ff_parsed_line_t allocations. RSS peaks at 1.4 GB
on 1M. Worth a follow-up.
Export progress reporting only fires during the write phase --
the merge+sort phase (~95% of wall time at 1M) is silent.
/history export and /history import are blocking on the main
UI thread; profanity is frozen for the duration (~5 min @ 1M).
ff_readline sets *truncated=TRUE on partial-write tail but
ff_verify_integrity does not surface this -- partial writes
go unflagged (failure-injection F1).
Parser silently truncates body at first unescaped ': ' if a
resource was manually edited to contain it (F9).
In gen_history (caught by the bench's own real-verify pass):
g_strndup mid-codepoint truncation on UTF-8 bank strings -- fixed.
Linkage strategy
database_flatfile.c + parser + verify + common.c are linked
unconditionally. The export/import bench additionally links
database.c + database_sqlite.c + database_export.c. bench_stubs.c
provides minimal stubs for log_*, prefs_*, connection_get_jid,
jid_create, files_*, message_*, ui hooks. integrity_issue_free
is a weak symbol so it falls back to the real database.c
implementation when that file is linked.
52 lines
5.0 KiB
CSV
52 lines
5.0 KiB
CSV
scenario,volume,bytes,lines,wall_ms,peak_rss_kb,note
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S1_cold_tail,small,39494716,10002,46.040,14408,tail page=100
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S2_warm_tail,small,39494716,10002,33.878,14716,tail page=100
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S3_deep_pagination,small,39494716,10002,1.024,14716,n_pages=1000
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S4_first_build,small,39494716,10002,39.139,14716,idx_entries=20
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S5_incremental_extend,small,104411,1000,0.859,14716,appended=1000_lines
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S6_verify,small,39494716,10002,396.022,16424,total=1 err=0 warn=1 info=0
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L1,longmsg,110586,100,1.486,9432,n=100 body=1024 write=0.8ms read=0.6ms parsed=100 mismatch=0 parse_fail=0 1KB body x100
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L2,longmsg,1032186,100,10.468,9432,n=100 body=10240 write=5.7ms read=4.8ms parsed=100 mismatch=0 parse_fail=0 10KB body x100
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L3,longmsg,10248186,100,100.337,9816,n=100 body=102400 write=57.3ms read=43.1ms parsed=100 mismatch=0 parse_fail=0 100KB body x100
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L4,longmsg,52432936,50,502.785,13608,n=50 body=1048576 write=264.5ms read=238.3ms parsed=50 mismatch=0 parse_fail=0 1MB body x50
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L5,longmsg,52429696,10,518.558,27764,n=10 body=5242880 write=264.4ms read=254.2ms parsed=10 mismatch=0 parse_fail=0 5MB body x10
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L6,longmsg,41435552,4,407.803,45852,n=4 body=10358784 write=211.3ms read=196.5ms parsed=4 mismatch=0 parse_fail=0 9.9MB body x4 (just under FF_MAX_LINE_LEN)
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L7,longmsg,10485981,2,3.750,45852,oversize=10485761_rejected=yes read=3.8ms parsed=1
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L8,longmsg,5175286,50,45.549,45852,n=50 body=102400 write=26.6ms read=18.9ms parsed=50 mismatch=0 parse_fail=0 100KB body w/ \n every 100B
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L9,longmsg,5124136,50,45.487,45852,n=50 body=102400 write=24.5ms read=21.0ms parsed=50 mismatch=0 parse_fail=0 100KB body w/ pipes
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L10,longmsg,5124136,50,43.254,45852,n=50 body=102400 write=18.9ms read=24.4ms parsed=50 mismatch=0 parse_fail=0 100KB body utf-8 emoji
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L11,longmsg,110586,100,1.284,45852,n=100 body=1024 write=0.7ms read=0.6ms parsed=100 mismatch=0 parse_fail=0 sanity baseline
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L12,longmsg,5415366,1000,26.437,45852,5x1MB_in_last_100 parsed=1000
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L13,longmsg,104865786,100,932.630,45852,n=100 body=1048576 write=485.7ms read=446.9ms parsed=100 mismatch=0 parse_fail=0 verify-equiv full parse on 100x1MB
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L14,longmsg,102481986,1000,962.342,45852,n=1000 body=102400 write=510.4ms read=452.0ms parsed=1000 mismatch=0 parse_fail=0 rapid append 1000x100KB
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F1,fail-pass,904,0,0.118,9540,issues total=1 err=0 warn=1 (partial-line tail; expect graceful handle)
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F2,fail-pass,1119,0,0.113,9540,warnings=2 (expect CRLF warning) first_warn=File permissions are 644 expected 600 (sensitive data)
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F3,fail-pass,341,0,0.072,9540,errors=1 warnings=1 (expect 1 unparsable line for mid-file BOM) first=Unparsable line
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F7,fail-pass,527,0,0.082,9540,issues total=1 err=0 (cycle handled at read-time not verify)
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F8,fail-pass,19044,0,0.981,9540,201 lines (1 orig + 200 corrections) errors=0 warns=1
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F9,fail-pass,341,0,0.069,9540,errors=0 (parser splits at first ': ' — not flagged but body truncated)
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F10,fail-pass,176,0,0.060,9540,errors=0 warnings=1 (RTL/ZWSP preserved literally)
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F11,fail-pass,323,0,0.264,9540,errors=1 (Latin-1 byte: error or fallback OK)
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F12,fail-pass,330,0,0.071,9540,errors=0 (empty body OK)
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F14,fail-pass,23236,0,0.914,9540,v1_lines=100 v2_lines=250 (expect rebuild detected and 250 lines)
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F15,fail-pass,0,0,0.121,9540,errors=0 infos=1 warnings=1 (empty file should yield INFO)
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S1_cold_tail,lmc,389183687,100002,480.428,43456,tail page=100
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S2_warm_tail,lmc,389183687,100002,477.482,43456,tail page=100
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S3_deep_pagination,lmc,389183687,100002,1.066,43456,n_pages=1000
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S4_first_build,lmc,389183687,100002,473.604,43456,idx_entries=200
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S5_incremental_extend,lmc,104411,1000,0.902,43456,appended=1000_lines
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S6_verify,lmc,389183687,100002,3892.137,43456,total=1 err=0 warn=1 info=0
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S6_verify,ooo,397586720,100002,4037.058,33336,total=17573 err=0 warn=17573 info=0
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S7a_export_cold,pipe100000,40714240,100000,3925.249,148432,exported=100000 db_rows=100000
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S7b_export_dedup,pipe100000,40714240,100000,3884.913,252396,exported=0 db_rows=100000
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S7_seed_export,pipe100000,40714240,100000,3894.644,148320,exported=100000 db_rows=100000
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S8a_import_cold,pipe100000,40628224,100000,3162.988,123212,imported=100000 rows_before=0 rows_after=100000
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S8b_import_idempotent,pipe100000,40628224,0,1178.929,194896,imported=0 rows_before=100000 rows_after=100000
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S8e_roundtrip,pipe100000,40521728,100000,8905.553,148340,rows=100000 seed=1640ms export=3730ms import=3258ms diff=277ms exported=100000 imported=100000 rows_a=100000 rows_b=100000 mismatches=0 body=0 lmc=0
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S7a_export_cold,pipe1000000,407732224,1000000,309245.302,1376872,exported=1000000 db_rows=1000000
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S7b_export_dedup,pipe1000000,407732224,1000000,303526.638,2418088,exported=0 db_rows=1000000
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S7_seed_export,pipe1000000,407732224,1000000,304160.043,1377084,exported=1000000 db_rows=1000000
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S8a_import_cold,pipe1000000,406605824,1000000,31288.288,1124984,imported=1000000 rows_before=0 rows_after=1000000
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S8b_import_idempotent,pipe1000000,406605824,0,10418.850,1841644,imported=0 rows_before=1000000 rows_after=1000000
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S8e_roundtrip,pipe1000000,405757952,1000000,352840.026,1377148,rows=1000000 seed=17637ms export=301062ms import=31430ms diff=2711ms exported=1000000 imported=1000000 rows_a=1000000 rows_b=1000000 mismatches=0 body=0 lmc=0
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