Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 11:31 PM
Duration
137.57 ms
Status
200
Response Size
19 KB
Error
No

Performance Breakdown

Database
19.8% (6 queries)
View Rendering
12.1%
Application Logic
68.1%
Other Operations
0.0%
Total Operations
12
Slowest Operation
137.57 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 151.4ms 302.8ms 454.3ms 605.7ms

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 138 ms 100.0%
home#api_complex 138 ms 100.0%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 5 ms 3.6%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 33 ms 24.0%
posts/show 29 ms 21.1%
SELECT * FROM users WHERE id = ? 5 ms 3.6%
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 23.3%
SELECT * FROM users WHERE id = ? 28 ms 20.4%
posts/show 10 ms 7.3%
home#api_complex 138 ms 100.0%
home/index 34 ms 24.7%
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... 17 ms 12.4%