Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 11:44 PM
Duration
182.14 ms
Status
204
Response Size
45 KB
Error
No

Performance Breakdown

Database
8.4% (4 queries)
View Rendering
19.2%
Application Logic
72.4%
Other Operations
0.0%
Total Operations
14
Slowest Operation
182.14 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 188.6ms 377.2ms 565.8ms 754.4ms

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
home#api_complex 182 ms 100.0%
posts/show 33 ms 18.1%
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... 17 ms 9.3%
home/index 30 ms 16.5%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 29 ms 15.9%
users/index 17 ms 9.3%
posts/show 17 ms 9.3%
home#api_complex 182 ms 100.0%
users/index 6 ms 3.3%
home/index 20 ms 11.0%
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... 3 ms 1.6%
home/index 22 ms 12.1%
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... 14 ms 7.7%
home#api_complex 182 ms 100.0%