Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 10:30 AM
Duration
262.93 ms
Status
200
Response Size
49 KB
Error
No

Performance Breakdown

Database
14.9% (4 queries)
View Rendering
20.7%
Application Logic
64.4%
Other Operations
0.0%
Total Operations
13
Slowest Operation
262.93 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 204.2ms 408.4ms 612.6ms 816.9ms

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 33 ms 12.6%
layouts/application 5 ms 1.9%
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... 30 ms 11.4%
home#api_complex 263 ms 100.0%
posts/show 31 ms 11.8%
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... 27 ms 10.3%
home/index 19 ms 7.2%
home/index 33 ms 12.6%
users/index 15 ms 5.7%
home#api_complex 263 ms 100.0%
SELECT * FROM users WHERE id = ? 31 ms 11.8%
posts/show 33 ms 12.6%
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... 34 ms 12.9%