Request Details

Route
/robots.txt GET
Timestamp
Sep 09, 2026 10:42 PM
Duration
30.0 ms
Status
201
Response Size
213 Bytes
Error
No

Performance Breakdown

Database
50.0% (2 queries)
View Rendering
50.0%
Application Logic
0.0%
Other Operations
0.0%
Total Operations
5
Slowest Operation
29.0 ms

Request Trace

How to read this

Each row is a layer of your stack. Many short Database bars means N+1 queries — fix with includes(). A wide Action bar with little Database time means slow Ruby code. A wide View bar usually means a partial rendered in a loop.

Action
View
Database
Other
View
Database
0.0ms 28.5ms 57.0ms 85.5ms 114.0ms

Operations

How to use this

Sort by Impact to find your biggest wins. Click any row for details and optimisation suggestions. The same SQL appearing multiple times is an N+1 — fix with includes(). A single operation above 50% impact is your highest priority.

Operation Duration Impact Timeline Actions
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 29 ms 96.7%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 28 ms 93.3%
layouts/application 20 ms 66.7%
users/index 25 ms 83.3%
users/index 12 ms 40.0%