Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 8:02 AM
Duration
105.3 ms
Status
200
Response Size
24 KB
Error
No

Performance Breakdown

Database
9.2% (4 queries)
View Rendering
18.6%
Application Logic
72.2%
Other Operations
0.0%
Total Operations
21
Slowest Operation
105.3 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 255.3ms 510.6ms 765.8ms 1021.1ms

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 105 ms 100.0%
home#api_complex 105 ms 100.0%
home#api_complex 105 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... 20 ms 19.0%
posts/show 5 ms 4.7%
users/index 13 ms 12.3%
layouts/application 36 ms 34.2%
home#api_complex 105 ms 100.0%
layouts/application 33 ms 31.3%
home#api_complex 105 ms 100.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 21 ms 19.9%
layouts/application 16 ms 15.2%
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... 27 ms 25.6%
users/index 10 ms 9.5%
layouts/application 25 ms 23.7%
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... 26 ms 24.7%
home#api_complex 105 ms 100.0%
users/index 32 ms 30.4%
users/index 7 ms 6.6%
home#api_complex 105 ms 100.0%
posts/show 13 ms 12.3%