Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 9:10 PM
Duration
82.19 ms
Status
201
Response Size
71 KB
Error
No

Performance Breakdown

Database
18.2% (9 queries)
View Rendering
9.8%
Application Logic
72.1%
Other Operations
0.0%
Total Operations
20
Slowest Operation
82.19 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 199.6ms 399.2ms 598.7ms 798.3ms

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 82 ms 100.0%
layouts/application 26 ms 31.6%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 27 ms 32.9%
home#api_complex 82 ms 100.0%
users/index 19 ms 23.1%
home#api_complex 82 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... 1 ms 1.2%
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... 30 ms 36.5%
posts/show 13 ms 15.8%
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... 8 ms 9.7%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 23 ms 28.0%
home#api_complex 82 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 22 ms 26.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 6 ms 7.3%
home#api_complex 82 ms 100.0%
users/index 20 ms 24.3%
home#api_complex 82 ms 100.0%
home#api_complex 82 ms 100.0%
DELETE FROM posts WHERE id = ? 18 ms 21.9%
SELECT * FROM users WHERE id = ? 10 ms 12.2%