Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 3:55 PM
Duration
196.35 ms
Status
204
Response Size
17 KB
Error
No

Performance Breakdown

Database
2.8% (4 queries)
View Rendering
7.7%
Application Logic
89.5%
Other Operations
0.0%
Total Operations
24
Slowest Operation
196.35 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 658.1ms 1316.1ms 1974.2ms 2632.2ms

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 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... 21 ms 10.7%
users/index 35 ms 17.8%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
layouts/application 30 ms 15.3%
home/index 28 ms 14.3%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
users/index 16 ms 8.1%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
posts/show 11 ms 5.6%
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 16.3%
home#api_complex 196 ms 100.0%
layouts/application 15 ms 7.6%
home#api_complex 196 ms 100.0%
users/index 39 ms 19.9%
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... 14 ms 7.1%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
layouts/application 28 ms 14.3%
SELECT * FROM posts WHERE created_at > ? 7 ms 3.6%
home#api_complex 196 ms 100.0%