Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 8:59 AM
Duration
261.97 ms
Status
200
Response Size
27 KB
Error
No

Performance Breakdown

Database
5.0% (4 queries)
View Rendering
1.0%
Application Logic
94.0%
Other Operations
0.0%
Total Operations
10
Slowest Operation
261.97 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 348.5ms 696.9ms 1045.4ms 1393.8ms

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 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... 7 ms 2.7%
home#api_complex 262 ms 100.0%
layouts/application 14 ms 5.3%
home#api_complex 262 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 30 ms 11.5%
SELECT name FROM users 23 ms 8.8%
home#api_complex 262 ms 100.0%
SELECT * FROM users WHERE id = ? 10 ms 3.8%
home#api_complex 262 ms 100.0%
home#api_complex 262 ms 100.0%