Request Details

Route
/api_complex GET
Timestamp
Sep 14, 2026 5:21 PM
Duration
136.93 ms
Status
200
Response Size
36 KB
Error
No

Performance Breakdown

Database
32.6% (6 queries)
View Rendering
28.9%
Application Logic
38.5%
Other Operations
0.0%
Total Operations
11
Slowest Operation
136.93 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
Action
View
Database
0.0ms 89.0ms 178.0ms 266.9ms 355.9ms

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 name FROM users 2 ms 1.5%
posts/show 33 ms 24.1%
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... 26 ms 19.0%
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... 30 ms 21.9%
home/index 30 ms 21.9%
home/index 22 ms 16.1%
SELECT * FROM users WHERE id = ? 29 ms 21.2%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 7 ms 5.1%
home/index 18 ms 13.1%
home#api_complex 137 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 16.1%