Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 5:58 PM
Duration
151.0 ms
Status
200
Response Size
60 KB
Error
No

Performance Breakdown

Database
1.9% (2 queries)
View Rendering
15.4%
Application Logic
82.8%
Other Operations
0.0%
Total Operations
12
Slowest Operation
151.0 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 228.0ms 456.0ms 684.0ms 912.0ms

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 35 ms 23.2%
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... 12 ms 7.9%
home#api_complex 151 ms 100.0%
home/index 37 ms 24.5%
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... 5 ms 3.3%
home#api_complex 151 ms 100.0%
posts/show 28 ms 18.5%
home#api_complex 151 ms 100.0%
layouts/application 6 ms 4.0%
home#api_complex 151 ms 100.0%
home/index 34 ms 22.5%
home#api_complex 151 ms 100.0%