Request Details

Route
/api_complex GET
Timestamp
Sep 16, 2026 2:31 PM
Duration
241.58 ms
Status
204
Response Size
21 KB
Error
No

Performance Breakdown

Database
4.6% (3 queries)
View Rendering
9.2%
Application Logic
86.2%
Other Operations
0.0%
Total Operations
15
Slowest Operation
241.58 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 420.6ms 841.2ms 1261.8ms 1682.5ms

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 242 ms 100.0%
home#api_complex 242 ms 100.0%
users/index 33 ms 13.7%
SELECT * FROM posts WHERE created_at > ? 23 ms 9.5%
home#api_complex 242 ms 100.0%
home#api_complex 242 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... 26 ms 10.8%
layouts/application 21 ms 8.7%
home/index 31 ms 12.8%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 12.0%
home#api_complex 242 ms 100.0%
home#api_complex 242 ms 100.0%
users/index 21 ms 8.7%
layouts/application 39 ms 16.1%
home/index 10 ms 4.1%