Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 4:48 PM
Duration
136.99 ms
Status
204
Response Size
65 KB
Error
No

Performance Breakdown

Database
8.0% (4 queries)
View Rendering
1.2%
Application Logic
90.8%
Other Operations
0.0%
Total Operations
10
Slowest Operation
136.99 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 188.5ms 377.0ms 565.5ms 753.9ms

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 137 ms 100.0%
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... 27 ms 19.7%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 14 ms 10.2%
SELECT name FROM users 15 ms 10.9%
posts/show 9 ms 6.6%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 4 ms 2.9%
home#api_complex 137 ms 100.0%
home#api_complex 137 ms 100.0%
home#api_complex 137 ms 100.0%
home#api_complex 137 ms 100.0%