Request Details

Route
/api_complex GET
Timestamp
Sep 16, 2026 4:44 AM
Duration
179.17 ms
Status
200
Response Size
68 KB
Error
No

Performance Breakdown

Database
5.1% (6 queries)
View Rendering
11.4%
Application Logic
83.5%
Other Operations
0.0%
Total Operations
17
Slowest Operation
179.17 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 268.2ms 536.4ms 804.6ms 1072.8ms

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 10 ms 5.6%
home#api_complex 179 ms 100.0%
home#api_complex 179 ms 100.0%
users/index 29 ms 16.2%
home/index 6 ms 3.3%
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... 21 ms 11.7%
home#api_complex 179 ms 100.0%
home#api_complex 179 ms 100.0%
SELECT * FROM users WHERE id = ? 3 ms 1.7%
layouts/application 9 ms 5.0%
posts/show 38 ms 21.2%
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 > ? 20 ms 11.2%
home#api_complex 179 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 4 ms 2.2%
layouts/application 30 ms 16.7%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 1 ms 0.6%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 6 ms 3.3%