Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 8:39 AM
Duration
149.13 ms
Status
200
Response Size
26 KB
Error
No

Performance Breakdown

Database
18.4% (5 queries)
View Rendering
4.5%
Application Logic
77.1%
Other Operations
0.0%
Total Operations
11
Slowest Operation
149.13 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 193.4ms 386.8ms 580.1ms 773.5ms

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 149 ms 100.0%
SELECT name FROM users 33 ms 22.1%
home#api_complex 149 ms 100.0%
users/index 13 ms 8.7%
home/index 22 ms 14.8%
home#api_complex 149 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 14.8%
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... 33 ms 22.1%
home#api_complex 149 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 21.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 14.8%