Request Details

Route
/api_complex GET
Timestamp
Sep 10, 2026 10:33 PM
Duration
131.53 ms
Status
200
Response Size
92 KB
Error
No

Performance Breakdown

Database
8.5% (6 queries)
View Rendering
18.4%
Application Logic
73.1%
Other Operations
0.0%
Total Operations
21
Slowest Operation
131.53 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 270.0ms 540.1ms 810.1ms 1080.2ms

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 22 ms 16.7%
SELECT * FROM users WHERE id = ? 8 ms 6.1%
home#api_complex 132 ms 100.0%
home#api_complex 132 ms 100.0%
layouts/application 18 ms 13.7%
home#api_complex 132 ms 100.0%
home/index 14 ms 10.6%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 6 ms 4.6%
layouts/application 30 ms 22.8%
layouts/application 21 ms 16.0%
home#api_complex 132 ms 100.0%
layouts/application 34 ms 25.9%
SELECT name FROM users 17 ms 12.9%
posts/show 23 ms 17.5%
home#api_complex 132 ms 100.0%
home#api_complex 132 ms 100.0%
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... 23 ms 17.5%
layouts/application 22 ms 16.7%
SELECT * FROM users WHERE id = ? 27 ms 20.5%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 11 ms 8.4%
layouts/application 15 ms 11.4%