Request Details

Route
/api_complex GET
Timestamp
Sep 19, 2026 11:50 AM
Duration
259.8 ms
Status
201
Response Size
75 KB
Error
No

Performance Breakdown

Database
28.1% (6 queries)
View Rendering
12.9%
Application Logic
58.9%
Other Operations
0.0%
Total Operations
11
Slowest Operation
259.8 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 110.2ms 220.4ms 330.6ms 440.8ms

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
posts/show 28 ms 10.8%
layouts/application 11 ms 4.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 7.3%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 17 ms 6.5%
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... 16 ms 6.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 33 ms 12.7%
home/index 13 ms 5.0%
home#api_complex 260 ms 100.0%
users/index 5 ms 1.9%
SELECT id, name, email FROM users WHERE id = ? 5 ms 1.9%
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... 34 ms 13.1%