Request Details

Route
/api_complex GET
Timestamp
Sep 21, 2026 10:55 PM
Duration
157.8 ms
Status
204
Response Size
67 KB
Error
No

Performance Breakdown

Database
6.3% (8 queries)
View Rendering
3.9%
Application Logic
89.8%
Other Operations
0.0%
Total Operations
22
Slowest Operation
157.8 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 439.2ms 878.5ms 1317.7ms 1757.0ms

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... 24 ms 15.2%
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... 6 ms 3.8%
home#api_complex 158 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 5 ms 3.2%
home#api_complex 158 ms 100.0%
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... 22 ms 13.9%
home#api_complex 158 ms 100.0%
home#api_complex 158 ms 100.0%
layouts/application 36 ms 22.8%
SELECT name FROM users 16 ms 10.1%
home#api_complex 158 ms 100.0%
SELECT * FROM users WHERE id = ? 7 ms 4.4%
home#api_complex 158 ms 100.0%
posts/show 11 ms 7.0%
home#api_complex 158 ms 100.0%
home#api_complex 158 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 13 ms 8.2%
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... 18 ms 11.4%
home/index 16 ms 10.1%
layouts/application 5 ms 3.2%
home#api_complex 158 ms 100.0%
home#api_complex 158 ms 100.0%