Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 2:12 AM
Duration
129.81 ms
Status
200
Response Size
62 KB
Error
No

Performance Breakdown

Database
7.5% (3 queries)
View Rendering
30.4%
Application Logic
62.1%
Other Operations
0.0%
Total Operations
13
Slowest Operation
129.81 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 156.9ms 313.7ms 470.6ms 627.4ms

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
layouts/application 21 ms 16.2%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 6 ms 4.6%
layouts/application 32 ms 24.7%
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... 6 ms 4.6%
layouts/application 35 ms 27.0%
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... 35 ms 27.0%
home#api_complex 130 ms 100.0%
home#api_complex 130 ms 100.0%
layouts/application 16 ms 12.3%
home#api_complex 130 ms 100.0%
layouts/application 40 ms 30.8%
users/index 13 ms 10.0%
posts/show 34 ms 26.2%