Request Details

Route
/api_complex GET
Timestamp
Sep 11, 2026 5:11 AM
Duration
226.72 ms
Status
204
Response Size
52 KB
Error
No

Performance Breakdown

Database
7.0% (7 queries)
View Rendering
4.8%
Application Logic
88.2%
Other Operations
0.0%
Total Operations
20
Slowest Operation
226.72 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 514.2ms 1028.4ms 1542.6ms 2056.8ms

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 227 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... 27 ms 11.9%
layouts/application 5 ms 2.2%
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... 28 ms 12.4%
home#api_complex 227 ms 100.0%
layouts/application 28 ms 12.4%
home#api_complex 227 ms 100.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 9 ms 4.0%
home#api_complex 227 ms 100.0%
posts/show 15 ms 6.6%
posts/show 23 ms 10.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 7 ms 3.1%
home#api_complex 227 ms 100.0%
home#api_complex 227 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 30 ms 13.2%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 26 ms 11.5%
home#api_complex 227 ms 100.0%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 17 ms 7.5%
home/index 28 ms 12.4%
home#api_complex 227 ms 100.0%