Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 12:11 AM
Duration
126.34 ms
Status
204
Response Size
45 KB
Error
No

Performance Breakdown

Database
10.9% (4 queries)
View Rendering
16.3%
Application Logic
72.8%
Other Operations
0.0%
Total Operations
12
Slowest Operation
126.34 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 173.6ms 347.2ms 520.8ms 694.4ms

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 33 ms 26.1%
home#api_complex 126 ms 100.0%
home#api_complex 126 ms 100.0%
home#api_complex 126 ms 100.0%
layouts/application 32 ms 25.3%
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... 32 ms 25.3%
home#api_complex 126 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 6 ms 4.7%
SELECT name FROM users 33 ms 26.1%
users/index 13 ms 10.3%
home/index 35 ms 27.7%
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... 5 ms 4.0%