Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 7:33 AM
Duration
78.39 ms
Status
204
Response Size
48 KB
Error
No

Performance Breakdown

Database
11.3% (5 queries)
View Rendering
22.9%
Application Logic
65.8%
Other Operations
0.0%
Total Operations
14
Slowest Operation
78.39 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 119.1ms 238.3ms 357.4ms 476.5ms

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
posts/show 31 ms 39.5%
users/index 16 ms 20.4%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 3 ms 3.8%
home#api_complex 78 ms 100.0%
home#api_complex 78 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 8 ms 10.2%
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 > ? 7 ms 8.9%
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... 9 ms 11.5%
home/index 9 ms 11.5%
SELECT * FROM users WHERE id = ? 27 ms 34.4%
home#api_complex 78 ms 100.0%
users/index 35 ms 44.7%
home#api_complex 78 ms 100.0%
layouts/application 18 ms 23.0%