Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 2:33 PM
Duration
166.71 ms
Status
204
Response Size
46 KB
Error
No

Performance Breakdown

Database
15.6% (7 queries)
View Rendering
18.8%
Application Logic
65.6%
Other Operations
0.0%
Total Operations
18
Slowest Operation
166.71 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 190.5ms 381.1ms 571.6ms 762.1ms

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/index 5 ms 3.0%
layouts/application 27 ms 16.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 9 ms 5.4%
SELECT * FROM users WHERE id = ? 35 ms 21.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 10 ms 6.0%
posts/show 15 ms 9.0%
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... 13 ms 7.8%
users/index 26 ms 15.6%
posts/show 38 ms 22.8%
SELECT * FROM users WHERE id = ? 2 ms 1.2%
users/index 10 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... 18 ms 10.8%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 32 ms 19.2%
posts/show 12 ms 7.2%
home#api_complex 167 ms 100.0%
layouts/application 10 ms 6.0%
home#api_complex 167 ms 100.0%
home#api_complex 167 ms 100.0%