Request Details

Route
/api_complex GET
Timestamp
Sep 14, 2026 10:38 PM
Duration
182.21 ms
Status
200
Response Size
29 KB
Error
No

Performance Breakdown

Database
2.9% (3 queries)
View Rendering
6.9%
Application Logic
90.2%
Other Operations
0.0%
Total Operations
21
Slowest Operation
182.21 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 555.6ms 1111.1ms 1666.7ms 2222.3ms

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 182 ms 100.0%
posts/show 25 ms 13.7%
home#api_complex 182 ms 100.0%
layouts/application 11 ms 6.0%
home#api_complex 182 ms 100.0%
home#api_complex 182 ms 100.0%
layouts/application 9 ms 4.9%
layouts/application 17 ms 9.3%
home#api_complex 182 ms 100.0%
home#api_complex 182 ms 100.0%
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... 33 ms 18.1%
layouts/application 31 ms 17.0%
home#api_complex 182 ms 100.0%
home/index 21 ms 11.5%
home#api_complex 182 ms 100.0%
home#api_complex 182 ms 100.0%
home/index 40 ms 22.0%
home#api_complex 182 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... 7 ms 3.8%
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... 24 ms 13.2%
home#api_complex 182 ms 100.0%