Request Details

Route
/api_complex GET
Timestamp
Sep 14, 2026 6:01 AM
Duration
158.54 ms
Status
200
Response Size
41 KB
Error
No

Performance Breakdown

Database
7.8% (7 queries)
View Rendering
4.1%
Application Logic
88.2%
Other Operations
0.0%
Total Operations
22
Slowest Operation
158.54 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 449.6ms 899.2ms 1348.8ms 1798.4ms

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 posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 13 ms 8.2%
home#api_complex 159 ms 100.0%
posts/show 5 ms 3.2%
home#api_complex 159 ms 100.0%
posts/show 22 ms 13.9%
home#api_complex 159 ms 100.0%
home#api_complex 159 ms 100.0%
home#api_complex 159 ms 100.0%
SELECT name FROM users 23 ms 14.5%
SELECT * FROM users WHERE id = ? 23 ms 14.5%
home#api_complex 159 ms 100.0%
home#api_complex 159 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 11 ms 6.9%
layouts/application 5 ms 3.2%
users/index 7 ms 4.4%
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... 14 ms 8.8%
layouts/application 34 ms 21.4%
home#api_complex 159 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... 31 ms 19.6%
home#api_complex 159 ms 100.0%
home#api_complex 159 ms 100.0%
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 15.8%