Request Details

Route
/api_complex GET
Timestamp
Sep 21, 2026 6:21 PM
Duration
87.19 ms
Status
204
Response Size
51 KB
Error
No

Performance Breakdown

Database
7.6% (4 queries)
View Rendering
7.4%
Application Logic
85.0%
Other Operations
0.0%
Total Operations
16
Slowest Operation
87.19 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 205.1ms 410.3ms 615.4ms 820.6ms

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
users/index 10 ms 11.5%
users/index 16 ms 18.3%
users/index 13 ms 14.9%
home#api_complex 87 ms 100.0%
home#api_complex 87 ms 100.0%
home#api_complex 87 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 > ? 11 ms 12.6%
SELECT * FROM users WHERE id = ? 19 ms 21.8%
home#api_complex 87 ms 100.0%
home#api_complex 87 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... 23 ms 26.4%
home/index 22 ms 25.2%
home#api_complex 87 ms 100.0%
home#api_complex 87 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 9 ms 10.3%
home#api_complex 87 ms 100.0%