Request Details

Route
/api_complex GET
Timestamp
Sep 20, 2026 2:27 PM
Duration
164.35 ms
Status
200
Response Size
12 KB
Error
No

Performance Breakdown

Database
15.3% (3 queries)
View Rendering
22.4%
Application Logic
62.3%
Other Operations
0.0%
Total Operations
10
Slowest Operation
164.35 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 131.9ms 263.9ms 395.8ms 527.7ms

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 WHERE id = ? 13 ms 7.9%
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... 34 ms 20.7%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 34 ms 20.7%
home/index 14 ms 8.5%
home/index 30 ms 18.3%
layouts/application 9 ms 5.5%
users/index 33 ms 20.1%
home/index 32 ms 19.5%
home#api_complex 164 ms 100.0%
home#api_complex 164 ms 100.0%