Request Details

Route
/api_complex GET
Timestamp
Sep 20, 2026 1:05 AM
Duration
119.31 ms
Status
204
Response Size
38 KB
Error
No

Performance Breakdown

Database
5.5% (4 queries)
View Rendering
12.8%
Application Logic
81.7%
Other Operations
0.0%
Total Operations
18
Slowest Operation
119.31 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 255.6ms 511.1ms 766.7ms 1022.2ms

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
posts/show 9 ms 7.5%
home#api_complex 119 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... 8 ms 6.7%
home#api_complex 119 ms 100.0%
layouts/application 14 ms 11.7%
home#api_complex 119 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 5 ms 4.2%
users/index 9 ms 7.5%
home#api_complex 119 ms 100.0%
home/index 39 ms 32.7%
home/index 16 ms 13.4%
users/index 34 ms 28.5%
SELECT name FROM users 9 ms 7.5%
posts/show 10 ms 8.4%
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... 34 ms 28.5%
home#api_complex 119 ms 100.0%
home#api_complex 119 ms 100.0%
home#api_complex 119 ms 100.0%