Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 3:36 AM
Duration
148.78 ms
Status
204
Response Size
28 KB
Error
No

Performance Breakdown

Database
3.7% (2 queries)
View Rendering
7.9%
Application Logic
88.4%
Other Operations
0.0%
Total Operations
13
Slowest Operation
148.78 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 294.6ms 589.2ms 883.8ms 1178.5ms

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
layouts/application 28 ms 18.8%
home#api_complex 149 ms 100.0%
home#api_complex 149 ms 100.0%
layouts/application 29 ms 19.5%
posts/show 12 ms 8.1%
home#api_complex 149 ms 100.0%
home#api_complex 149 ms 100.0%
layouts/application 24 ms 16.1%
home#api_complex 149 ms 100.0%
home#api_complex 149 ms 100.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 35 ms 23.5%
home#api_complex 149 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 9 ms 6.0%