Request Details

Route
/api_complex GET
Timestamp
Sep 15, 2026 12:48 PM
Duration
244.89 ms
Status
200
Response Size
73 KB
Error
No

Performance Breakdown

Database
4.8% (6 queries)
View Rendering
10.0%
Application Logic
85.2%
Other Operations
0.0%
Total Operations
19
Slowest Operation
244.89 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 431.3ms 862.7ms 1294.0ms 1725.3ms

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
layouts/application 29 ms 11.8%
home#api_complex 245 ms 100.0%
home/index 29 ms 11.8%
users/index 22 ms 9.0%
home#api_complex 245 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 11 ms 4.5%
home#api_complex 245 ms 100.0%
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... 15 ms 6.1%
home#api_complex 245 ms 100.0%
home/index 27 ms 11.0%
layouts/application 29 ms 11.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 3 ms 1.2%
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 0.4%
home/index 14 ms 5.7%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 34 ms 13.9%
home#api_complex 245 ms 100.0%
home#api_complex 245 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... 19 ms 7.8%
users/index 23 ms 9.4%