Request Details

Route
/robots.txt GET
Timestamp
Sep 17, 2026 2:38 AM
Duration
10.0 ms
Status
201
Response Size
100 Bytes
Error
No

Performance Breakdown

Database
43.6% (4 queries)
View Rendering
56.4%
Application Logic
0.0%
Other Operations
0.0%
Total Operations
8
Slowest Operation
39.0 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 40.8ms 81.5ms 122.3ms 163.0ms

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
home/index 24 ms 240.0%
posts/show 39 ms 390.0%
SELECT name FROM users 27 ms 270.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 15 ms 150.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 12 ms 120.0%
home/index 19 ms 190.0%
posts/show 10 ms 100.0%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 17 ms 170.0%