Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 4:38 PM
Duration
159.18 ms
Status
200
Response Size
44 KB
Error
No

Performance Breakdown

Database
7.3% (4 queries)
View Rendering
7.6%
Application Logic
85.0%
Other Operations
0.0%
Total Operations
10
Slowest Operation
159.18 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 187.2ms 374.4ms 561.5ms 748.7ms

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
home#api_complex 159 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 26 ms 16.3%
home#api_complex 159 ms 100.0%
home#api_complex 159 ms 100.0%
home/index 34 ms 21.4%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 10.7%
home#api_complex 159 ms 100.0%
home/index 23 ms 14.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 9 ms 5.7%
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 > ? 3 ms 1.9%