slurpWhy export completion dropped after v1.2.4Nov 7, 2026

Why do large exports fail?

Export completion fell from 94% to 79% when v1.2.4 shipped on Sep 7, and recovered to 92% with v1.2.5 on Oct 7. The drop is almost entirely exports over 500 MB. Sample data from a fictional app, written by a coding agent from the SQL below.

headline

Exports started, last 30 days

16,412
headline

Completion, last 30 days (%)

92.4
headline

Failures, last 30 days

1,249

§4Export completion by week

weekly
Sep 01Oct 0160708090100Completed, % of startedweek: 2026-08-10 00:00 UTC; completion: 95.7; Release: v1.2.3week: 2026-08-17 00:00 UTC; completion: 93.2; Release: v1.2.3week: 2026-08-24 00:00 UTC; completion: 93.7; Release: v1.2.3week: 2026-08-31 00:00 UTC; completion: 94.4; Release: v1.2.3week: 2026-09-07 00:00 UTC; completion: 79.2; Release: v1.2.4week: 2026-09-14 00:00 UTC; completion: 79.9; Release: v1.2.4week: 2026-09-21 00:00 UTC; completion: 78.9; Release: v1.2.4week: 2026-09-28 00:00 UTC; completion: 78.1; Release: v1.2.4week: 2026-10-05 00:00 UTC; completion: 89.6; Release: v1.2.5week: 2026-10-12 00:00 UTC; completion: 92; Release: v1.2.5week: 2026-10-19 00:00 UTC; completion: 92.8; Release: v1.2.5week: 2026-10-26 00:00 UTC; completion: 91.6; Release: v1.2.5v1.2.3v1.2.4v1.2.5Release

§5Completion by file size and release

by_size
Under 1010 to 100100 to 500Over 500File size, MB020406080100Completed, % of startedFile size, MB: 10 to 100; Completed, % of started: 95.2; release: v1.2.3; Release: v1.2.3File size, MB: 100 to 500; Completed, % of started: 93.3; release: v1.2.3; Release: v1.2.3File size, MB: Over 500; Completed, % of started: 83.5; release: v1.2.3; Release: v1.2.3File size, MB: Under 10; Completed, % of started: 95.3; release: v1.2.3; Release: v1.2.3File size, MB: 10 to 100; Completed, % of started: 85.3; release: v1.2.4; Release: v1.2.4File size, MB: 100 to 500; Completed, % of started: 86.3; release: v1.2.4; Release: v1.2.4File size, MB: Over 500; Completed, % of started: 10.5; release: v1.2.4; Release: v1.2.4File size, MB: Under 10; Completed, % of started: 84.9; release: v1.2.4; Release: v1.2.4File size, MB: 10 to 100; Completed, % of started: 94.6; release: v1.2.5; Release: v1.2.5File size, MB: 100 to 500; Completed, % of started: 94.8; release: v1.2.5; Release: v1.2.5File size, MB: Over 500; Completed, % of started: 66.3; release: v1.2.5; Release: v1.2.5File size, MB: Under 10; Completed, % of started: 94.6; release: v1.2.5; Release: v1.2.5v1.2.3v1.2.4v1.2.5Release

§6Failed exports by reason

errors
Failure reasonv1.2.3v1.2.4v1.2.5
out_of_memory30693405
timeout45536224
codec_error24359143
validation79219399
network1017478

Finding: on v1.2.4, nearly 9 in 10 exports over 500 MB failed, mostly out of memory. Smaller exports also lost about 9 points. v1.2.5 restores small exports to 95%, but files over 500 MB still fail a third of the time. Next: stream large renders instead of buffering them, then re-run this report on the next release.