Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 8:27 PM
Duration
138.07 ms
Status
200
Response Size
38 KB
Error
No

Performance Breakdown

Database
17.4% (7 queries)
View Rendering
25.5%
Application Logic
57.1%
Other Operations
0.0%
Total Operations
18
Slowest Operation
138.07 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 181.3ms 362.6ms 543.9ms 725.2ms

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 user_id = ? ORDER BY created_at DESC LIMIT ? 14 ms 10.1%
posts/show 14 ms 10.1%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 3 ms 2.2%
home#api_complex 138 ms 100.0%
home#api_complex 138 ms 100.0%
SELECT name FROM users 34 ms 24.6%
home/index 33 ms 23.9%
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... 30 ms 21.7%
SELECT name FROM users 16 ms 11.6%
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... 28 ms 20.3%
users/index 15 ms 10.9%
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... 1 ms 0.7%
home/index 25 ms 18.1%
home/index 33 ms 23.9%
home/index 33 ms 23.9%
layouts/application 17 ms 12.3%
layouts/application 15 ms 10.9%
home#api_complex 138 ms 100.0%