Request Details

Route
/api_complex GET
Timestamp
Sep 14, 2026 9:51 PM
Duration
110.36 ms
Status
200
Response Size
50 KB
Error
No

Performance Breakdown

Database
7.2% (8 queries)
View Rendering
6.1%
Application Logic
86.7%
Other Operations
0.0%
Total Operations
25
Slowest Operation
110.36 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 350.0ms 700.0ms 1049.9ms 1399.9ms

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
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... 8 ms 7.2%
home#api_complex 110 ms 100.0%
home#api_complex 110 ms 100.0%
home#api_complex 110 ms 100.0%
home#api_complex 110 ms 100.0%
SELECT name FROM users 16 ms 14.5%
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 19.9%
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... 25 ms 22.7%
home#api_complex 110 ms 100.0%
home#api_complex 110 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... 24 ms 21.7%
users/index 13 ms 11.8%
home#api_complex 110 ms 100.0%
SELECT name FROM users 1 ms 0.9%
home/index 14 ms 12.7%
home#api_complex 110 ms 100.0%
home/index 5 ms 4.5%
home#api_complex 110 ms 100.0%
home/index 11 ms 10.0%
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 > ? 2 ms 1.8%
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... 3 ms 2.7%
home#api_complex 110 ms 100.0%
home#api_complex 110 ms 100.0%
layouts/application 6 ms 5.4%
layouts/application 36 ms 32.6%