Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 2:21 PM
Duration
110.87 ms
Status
200
Response Size
18 KB
Error
No

Performance Breakdown

Database
5.5% (7 queries)
View Rendering
12.2%
Application Logic
82.3%
Other Operations
0.0%
Total Operations
21
Slowest Operation
110.87 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 235.8ms 471.5ms 707.3ms 943.1ms

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#api_complex 111 ms 100.0%
SELECT * FROM users WHERE id = ? 13 ms 11.7%
layouts/application 17 ms 15.3%
home#api_complex 111 ms 100.0%
SELECT name FROM users 3 ms 2.7%
home#api_complex 111 ms 100.0%
users/index 18 ms 16.2%
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... 14 ms 12.6%
home#api_complex 111 ms 100.0%
layouts/application 17 ms 15.3%
posts/show 5 ms 4.5%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 1 ms 0.9%
SELECT * FROM posts WHERE created_at > ? 6 ms 5.4%
home#api_complex 111 ms 100.0%
home#api_complex 111 ms 100.0%
home#api_complex 111 ms 100.0%
layouts/application 38 ms 34.3%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 1 ms 0.9%
users/index 14 ms 12.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 14 ms 12.6%
posts/show 6 ms 5.4%