# Sanity: Major incident: Elevated listener latency affecting Studio performance

**Summary:** Sanity reported a major degradation starting 2026-10-08 18:27 UTC, lasting 13 h 29 min and resolved at 2026-10-09 07:57 UTC. Elevated listener latency affected Studio performance for some customers; Dataset Embeddings could be stale, and Functions triggering could be delayed or time out. Sanity reported a fix fully implemented at 10-08 20:08 UTC while embedding processing caught up. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-10-08 18:27 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/s6kwy10f95gk](https://stspg.io/s6kwy10f95gk)
- [Company: Sanity](https://rewindex.com/company/sanity.md)
- Versions: before (none: first archived) → after incident\_version:206/md3wjp3d50kk@8a2f514042e4
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Elevated listener latency affecting Studio performance
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-10-08 18:27 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-10-09 07:57 UTC
```

**6. Added: Affected components**

```diff
+ Dataset Embeddings, Functions, Studio
```

**7. Added: Update** (investigating) · 2026-10-08 17:49 UTC

```diff
+ We are investigating an issue of elevated listener latency, which may cause performance issues in the Studio for some customers.
```

**8. Added: Update** (investigating) · 2026-10-08 18:27 UTC

```diff
+ We are investigating an issue of elevated listener latency, which may cause performance issues in the Studio for some customers. Dataset embeddings may be stale at this time.
```

**9. Added: Update** (investigating) · 2026-10-08 18:57 UTC

```diff
+ We are investigating an issue of elevated listener latency, which may cause performance issues in the Studio for some customers. Dataset embeddings may be stale at this time. The triggering of Functions may be delayed or time out.
```

**10. Added: Update** (identified) · 2026-10-08 19:24 UTC

```diff
+ The triggering of Functions and listener performance have returned to normal. Dataset embeddings may continue to be stale for some customers.
```

**11. Added: Update** (monitoring) · 2026-10-08 20:08 UTC

```diff
+ A fix has been fully implemented, and we are monitoring results. Some users may see stale Dataset Embeddings while processing catches up.
```

**12. Added: Update** (resolved) · 2026-10-09 07:57 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-10-08 18:27 UTC | Major incident: Elevated listener latency affecting Studio performance (this change) | degradation |

All Sanity changes: [timeline](https://rewindex.com/company/sanity/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i537eb278b9cbaa · Markdown: https://rewindex.com/change/i537eb278b9cbaa.md · JSON: https://rewindex.com/api/v1/changes/i537eb278b9cbaa · Generated 2026-10-18T01:30:34.664Z