Request Details

Route
/api_complex GET
Timestamp
Sep 13, 2026 9:27 AM
Duration
134.14 ms
Status
200
Response Size
61 KB
Error
No

Performance Breakdown

Database
12.9% (5 queries)
View Rendering
12.2%
Application Logic
75.0%
Other Operations
0.0%
Total Operations
12
Slowest Operation
134.14 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 178.9ms 357.8ms 536.7ms 715.6ms

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 35 ms 26.1%
home/index 26 ms 19.4%
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... 28 ms 20.9%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 25 ms 18.6%
home#api_complex 134 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... 19 ms 14.2%
SELECT name FROM users 12 ms 8.9%
SELECT name FROM users 8 ms 6.0%
users/index 26 ms 19.4%
home#api_complex 134 ms 100.0%
home#api_complex 134 ms 100.0%
home#api_complex 134 ms 100.0%