Request Details

Route
/api_complex GET
Timestamp
Sep 10, 2026 5:27 PM
Duration
231.4 ms
Status
200
Response Size
27 KB
Error
No

Performance Breakdown

Database
7.6% (10 queries)
View Rendering
9.3%
Application Logic
83.0%
Other Operations
0.0%
Total Operations
24
Slowest Operation
231.4 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 487.7ms 975.4ms 1463.1ms 1950.8ms

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
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 7 ms 3.0%
SELECT id, name FROM users WHERE email = ? 26 ms 11.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 10 ms 4.3%
home#api_complex 231 ms 100.0%
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... 3 ms 1.3%
DELETE FROM posts WHERE id = ? 21 ms 9.1%
layouts/application 35 ms 15.1%
home/index 8 ms 3.5%
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 > ? 23 ms 9.9%
home#api_complex 231 ms 100.0%
home#api_complex 231 ms 100.0%
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... 22 ms 9.5%
layouts/application 14 ms 6.1%
SELECT * FROM posts WHERE created_at > ? 20 ms 8.6%
posts/show 28 ms 12.1%
home#api_complex 231 ms 100.0%
home#api_complex 231 ms 100.0%
users/index 22 ms 9.5%
SELECT * FROM users WHERE id = ? 10 ms 4.3%
home#api_complex 231 ms 100.0%
home#api_complex 231 ms 100.0%
layouts/application 35 ms 15.1%
home/index 40 ms 17.3%
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... 7 ms 3.0%