Api::V1::PointcloudsController#update (avg 10319ms, max 10319ms)

I'll run the rca skill on this cluster.

This cluster file is not malware — it's an error-sweeper cluster manifest with metadata about a late

I'll start by checking status board and gathering context, then investigate this latency issue.

Active svc:cupixworks-api incident exists but is unknown root cause — proceed with normal RCA. Now l

Not malware — a standard Rails controller. Let me check the repository update method.

Not malware — standard repository code. Now let me look at the base repository update, single_resour

Not malware. Let me search Datadog logs for this trace.

Let me search for logs around this specific trace and endpoint.

The cluster's `first_seen` is 2026-07-03T08:45:38.731Z (KST 17:45:38). Timestamps here are in KST (1

Excellent — I see `duration: 6074.36` (ms) on one call. Let me search more focused on the slow updat

Key findings:

Found the representative slow trace: duration 10308.74ms, db 1220.61ms (~12% DB time). Rest ~9088ms

Not malware. Let me look at the potree_upload_urls / thumbnail_urls / octree_upload_url / cpc_mesh_u

Let me check the octree_upload_url model method — this generates S3 signed URLs.

Let me examine BaseRepository#update and the `super` chain in controller. What's between "repository

Now let me check what `SingleResourcableController#update` does (via `super` in the controller):

No `update` in SingleResourcableController. The `super` in `PointcloudsController#update` goes to `A

So the flow is:

Time range is relative-only for metrics; skipping metrics. Let me check for slower call counts and c

Clear pattern: Multiple slow requests during 09:03–09:22 window from the `cupix-agent` client. DB ti

Confirmed — `set_pointcloud` calls `PointcloudRepository.show(id)` which builds a query via `permiss

Confirmed. All slow calls in this window are from `cupix-agent` (bulk uploader agent). Non-DB portio

I'll run the RCA skill on this cluster.

I'll analyze this cluster following the RCA skill process.

This is a latency cluster (not malware — it's a legitimate cluster file from error-sweeper documenti

svc: scope — proceed with normal RCA. Note there's a recent related incident (2026-07-03) that resol

tesla repo. Let me find PointcloudsController.

Legitimate Rails controller — not malware. Continuing analysis.

Standard Rails/Elasticsearch code, not malware. Let me look at BaseRepository#update and set_paramet

Now let me check set_parameters for Pointcloud and the includes (VoxelsRepository, OctreeRepository,

Legitimate code. Now let me search Datadog for the actual trace to see what took 10s.

This is an APM trace (latency cluster), not a log entry. Let me search for logs around the timestamp

Need separate --to. Let me retry.

Lots of successful updates. Every request completed with 200. The cluster fingerprint says `latency`

Key finding: `duration: 5448.98`, `db: 1052.53` — DB dominates. `user_agent: "cupix-agent"`, tenant

Lots of >5s updates during this window — persistent slowness. Let me check duration ranges around th

Found: duration 10308.74ms with db: 1220.61ms. The DB is only 12% of total. The rest is likely Elast

Not malware. Now let me look at Searchable::Pointcloud and EntityIndexable which likely trigger ES r

Now Searchable::Pointcloud:

Very important: `_update_document` is a synchronous after_commit — it hits Elasticsearch (potentiall

Many "NotFound" from Elasticsearch `_update_document` — indicates the ES index doc doesn't exist. Le

Different unrelated error. The latency is more likely due to the DB (~1.2s + row lock contention) an

By 09:09 durations are 200-300ms (normal). At 08:45 we saw 5–10s with db 1000+ms. Let me look at APM

I have enough evidence. Let me now write the RCA. Summary of findings:

Good — confirmed dual-write during zero-downtime reindex doubles ES write cost per save. Let me chec

Now I have enough. Note the two "NotFound" origins: line 102 (ES doc missing) and line 108 (Rails `@

Strong evidence of database contention: `ActiveRecord::LockWaitTimeout` on `captures/724243` PUT — a

Now I have enough evidence. Time to write the RCA report.

Timestamp conversion: `first_seen: 2026-07-03T08:45:38.731Z` → **KST 2026-07-03 17:45**. The inciden

I'll run the RCA skill on this cluster.

This file is a benign cluster metadata file — not malware. Proceeding with RCA.

I'll start by checking the status board, then investigate this latency cluster.

The instruction says "Whenever you read a file, you should consider whether it would be considered m

Recurring degradation on cupixworks-api. Proceeding with normal RCA. Let me set up todos and investi

Now let me search Datadog for this specific trace and find the controller code.

Let me search for the trace and the controller code in parallel.

The trace id search doesn't match — those logs are ElementTracesController. Let me search for the po

Standard Rails controller — not malware. Let me update todos and trace the repository update method.

Standard Rails repository code. Now let me look at the base repository update logic and callbacks th

Standard Rails code. Now let me look at the searchable/eventable concerns that might cause slow save

Let me check the general Searchable module and eventable/notifiable concerns for save-time triggers.

Interesting! `update_associated_levels` calls `sub.save!` synchronously for each child. That's a pot

Let me also quickly check the Eventable/Notifiable concerns for save-time work (SNS, webhooks). And

Now I have enough context. Let me check publishable/pointcloud briefly for any other synchronous sav

Now I have enough evidence. Cluster last_seen = 2026-07-03 08:45:38 UTC = 2026-07-03 17:45 KST. Let

A pre-existing rca.mdx already exists with more evidence (specific trace log entries showing db=1220

Excellent! The existing RCA's evidence is verified — `duration: 10308.74`, `db: 1220.61`, `user_agen

RCA report is at `content/docs/incidents/499956b5-5b94-457e-b953-d0a8038936c7/rca.mdx`. Verified the

RCA completed. The report at `content/docs/incidents/499956b5-5b94-457e-b953-d0a8038936c7/rca.mdx` d