Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 11:42 PM
Duration
72.76 ms
Status
201
Response Size
74 KB
Error
No

Performance Breakdown

Database
7.9% (2 queries)
View Rendering
21.5%
Application Logic
70.6%
Other Operations
0.0%
Total Operations
14
Slowest Operation
72.76 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 154.6ms 309.3ms 463.9ms 618.5ms

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/index 32 ms 44.0%
home#api_complex 73 ms 100.0%
users/index 19 ms 26.1%
layouts/application 36 ms 49.5%
home#api_complex 73 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... 21 ms 28.9%
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... 28 ms 38.5%
home/index 7 ms 9.6%
home#api_complex 73 ms 100.0%
layouts/application 19 ms 26.1%
home#api_complex 73 ms 100.0%
home#api_complex 73 ms 100.0%
home#api_complex 73 ms 100.0%
users/index 20 ms 27.5%