Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 8:41 PM
Duration
140.22 ms
Status
200
Response Size
47 KB
Error
No

Performance Breakdown

Database
8.2% (5 queries)
View Rendering
7.3%
Application Logic
84.4%
Other Operations
0.0%
Total Operations
15
Slowest Operation
140.22 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 249.1ms 498.2ms 747.2ms 996.3ms

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
SELECT * FROM posts WHERE created_at > ? 8 ms 5.7%
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... 19 ms 13.6%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 9 ms 6.4%
home#api_complex 140 ms 100.0%
SELECT * FROM users WHERE id = ? 30 ms 21.4%
SELECT * FROM posts WHERE created_at > ? 16 ms 11.4%
home#api_complex 140 ms 100.0%
layouts/application 21 ms 15.0%
users/index 21 ms 15.0%
layouts/application 20 ms 14.3%
home#api_complex 140 ms 100.0%
home#api_complex 140 ms 100.0%
posts/show 11 ms 7.8%
home#api_complex 140 ms 100.0%
home#api_complex 140 ms 100.0%