Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 2:54 AM
Duration
186.27 ms
Status
204
Response Size
55 KB
Error
No

Performance Breakdown

Database
3.8% (4 queries)
View Rendering
8.6%
Application Logic
87.7%
Other Operations
0.0%
Total Operations
21
Slowest Operation
186.27 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 478.1ms 956.2ms 1434.4ms 1912.5ms

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
layouts/application 25 ms 13.4%
home#api_complex 186 ms 100.0%
layouts/application 32 ms 17.2%
layouts/application 20 ms 10.7%
home#api_complex 186 ms 100.0%
users/index 5 ms 2.7%
home#api_complex 186 ms 100.0%
home#api_complex 186 ms 100.0%
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 > ? 30 ms 16.1%
home#api_complex 186 ms 100.0%
posts/show 5 ms 2.7%
SELECT name FROM users 16 ms 8.6%
home#api_complex 186 ms 100.0%
home#api_complex 186 ms 100.0%
home#api_complex 186 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 13.4%
home/index 40 ms 21.5%
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... 1 ms 0.5%
home/index 26 ms 14.0%
users/index 11 ms 5.9%
home#api_complex 186 ms 100.0%