Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 10:33 AM
Duration
195.74 ms
Status
201
Response Size
47 KB
Error
No

Performance Breakdown

Database
4.4% (5 queries)
View Rendering
5.5%
Application Logic
90.2%
Other Operations
0.0%
Total Operations
22
Slowest Operation
195.74 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 597.0ms 1194.1ms 1791.1ms 2388.2ms

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
posts/show 9 ms 4.6%
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... 33 ms 16.9%
home#api_complex 196 ms 100.0%
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... 23 ms 11.8%
home#api_complex 196 ms 100.0%
layouts/application 6 ms 3.1%
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... 33 ms 16.9%
users/index 36 ms 18.4%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
posts/show 34 ms 17.4%
home/index 33 ms 16.9%
home#api_complex 196 ms 100.0%
SELECT name FROM users 13 ms 6.6%
home#api_complex 196 ms 100.0%
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 > ? 2 ms 1.0%
layouts/application 13 ms 6.6%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%
home#api_complex 196 ms 100.0%