Request Details

Route
/api_complex GET
Timestamp
Sep 10, 2026 3:45 PM
Duration
335.16 ms
Status
200
Response Size
35 KB
Error
No

Performance Breakdown

Database
15.0% (8 queries)
View Rendering
6.6%
Application Logic
78.5%
Other Operations
0.0%
Total Operations
14
Slowest Operation
335.16 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 320.4ms 640.7ms 961.1ms 1281.5ms

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 335 ms 100.0%
layouts/application 40 ms 11.9%
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... 27 ms 8.1%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 20 ms 6.0%
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... 16 ms 4.8%
posts/show 7 ms 2.1%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 24 ms 7.2%
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... 35 ms 10.4%
home/index 37 ms 11.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 26 ms 7.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 9.5%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 12 ms 3.6%
home#api_complex 335 ms 100.0%
home#api_complex 335 ms 100.0%