Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 10:43 PM
Duration
199.61 ms
Status
201
Response Size
42 KB
Error
No

Performance Breakdown

Database
8.5% (5 queries)
View Rendering
7.2%
Application Logic
84.4%
Other Operations
0.0%
Total Operations
10
Slowest Operation
199.61 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 177.5ms 354.9ms 532.4ms 709.8ms

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
SELECT * FROM posts WHERE created_at > ? 18 ms 9.0%
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... 10 ms 5.0%
posts/show 25 ms 12.5%
layouts/application 26 ms 13.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 6 ms 3.0%
home#api_complex 200 ms 100.0%
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... 2 ms 1.0%
SELECT * FROM posts WHERE created_at > ? 24 ms 12.0%
home#api_complex 200 ms 100.0%
home#api_complex 200 ms 100.0%