Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 1:34 AM
Duration
183.99 ms
Status
204
Response Size
33 KB
Error
No

Performance Breakdown

Database
9.5% (6 queries)
View Rendering
11.3%
Application Logic
79.2%
Other Operations
0.0%
Total Operations
13
Slowest Operation
183.99 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 232.2ms 464.5ms 696.7ms 929.0ms

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 * FROM posts WHERE created_at > ? 2 ms 1.1%
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... 18 ms 9.8%
SELECT id, name FROM users WHERE email = ? 19 ms 10.3%
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... 1 ms 0.5%
home#api_complex 184 ms 100.0%
home#api_complex 184 ms 100.0%
home#api_complex 184 ms 100.0%
users/index 32 ms 17.4%
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... 16 ms 8.7%
SELECT * FROM posts WHERE created_at > ? 32 ms 17.4%
layouts/application 38 ms 20.7%
posts/show 35 ms 19.0%
home#api_complex 184 ms 100.0%