Request Details

Route
/api_complex GET
Timestamp
Sep 14, 2026 9:18 PM
Duration
249.84 ms
Status
200
Response Size
43 KB
Error
No

Performance Breakdown

Database
12.8% (5 queries)
View Rendering
12.9%
Application Logic
74.3%
Other Operations
0.0%
Total Operations
10
Slowest Operation
249.84 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 168.2ms 336.3ms 504.5ms 672.7ms

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
layouts/application 34 ms 13.6%
users/index 15 ms 6.0%
SELECT * FROM posts WHERE created_at > ? 26 ms 10.4%
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... 1 ms 0.4%
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... 22 ms 8.8%
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 > ? 13 ms 5.2%
SELECT * FROM users WHERE id = ? 24 ms 9.6%
home#api_complex 250 ms 100.0%
home#api_complex 250 ms 100.0%
layouts/application 38 ms 15.2%