ci: Add more startup time for Matrix shards - #5795
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The 300s ceiling on the realm-server-ready wait is close enough to a healthy cold boot that the slowest matrix shard fails on it: the harness kills a server that reported progress milliseconds earlier, having nearly finished indexing the base realm. The comment above the constant assumed that boot takes ~2 minutes; the slowest shard's setup measures closer to five. Double the cap. It was never a performance assertion — the progress-aware watchdog beside it fails a boot that goes silent within 90s, so a genuine hang still surfaces just as fast, and only a server that keeps emitting output without ever finishing waits longer than before. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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marked this pull request as ready for review
August 17, 2026 19:06
lukemelia
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Aug 17, 2026
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I’m seeing Matrix shard failures in #5776 based on the 5min timeout described here, though the comment says 2min. Shards 1 and 3 are regularly approaching or exceeding 5min startup, which CS-12533 tracks for analysis and reduction. But for now, this raises the timeout to 10min.
Claude explanation
The 300s ceiling on the realm-server-ready wait is close enough to a healthy cold boot that the slowest matrix shard fails on it: the harness kills a server that reported progress milliseconds earlier, having nearly finished indexing the base realm. The comment above the constant assumed that boot takes ~2 minutes; the slowest shard's setup measures closer to five.Double the cap. It was never a performance assertion — the progress-aware watchdog beside it fails a boot that goes silent within 90s, so a genuine hang still surfaces just as fast, and only a server that keeps emitting output without ever finishing waits longer than before.