Request Details

Route
/api_complex GET
Timestamp
Sep 19, 2026 2:41 AM
Duration
282.39 ms
Status
201
Response Size
33 KB
Error
No

Performance Breakdown

Database
1.1% (4 queries)
View Rendering
4.4%
Application Logic
94.4%
Other Operations
0.0%
Total Operations
25
Slowest Operation
282.39 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 1046.9ms 2093.7ms 3140.6ms 4187.5ms

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
users/index 23 ms 8.1%
home#api_complex 282 ms 100.0%
home#api_complex 282 ms 100.0%
users/index 18 ms 6.4%
home#api_complex 282 ms 100.0%
home#api_complex 282 ms 100.0%
users/index 21 ms 7.4%
home#api_complex 282 ms 100.0%
home#api_complex 282 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 1 ms 0.4%
users/index 30 ms 10.6%
home#api_complex 282 ms 100.0%
SELECT * FROM users WHERE id = ? 16 ms 5.7%
home#api_complex 282 ms 100.0%
home#api_complex 282 ms 100.0%
home#api_complex 282 ms 100.0%
home#api_complex 282 ms 100.0%
home#api_complex 282 ms 100.0%
users/index 40 ms 14.2%
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 5.0%
home#api_complex 282 ms 100.0%
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 6.0%
home/index 31 ms 11.0%
layouts/application 23 ms 8.1%
home#api_complex 282 ms 100.0%