Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 8:13 PM
Duration
270.3 ms
Status
201
Response Size
28 KB
Error
No

Performance Breakdown

Database
5.0% (7 queries)
View Rendering
3.3%
Application Logic
91.7%
Other Operations
0.0%
Total Operations
17
Slowest Operation
270.3 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 516.0ms 1032.1ms 1548.1ms 2064.1ms

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
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... 11 ms 4.1%
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... 10 ms 3.7%
home#api_complex 270 ms 100.0%
home#api_complex 270 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 31 ms 11.5%
users/index 14 ms 5.2%
home/index 35 ms 12.9%
home#api_complex 270 ms 100.0%
posts/show 20 ms 7.4%
home#api_complex 270 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... 15 ms 5.5%
home#api_complex 270 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 0.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 8.1%
home#api_complex 270 ms 100.0%
home#api_complex 270 ms 100.0%
SELECT * FROM users WHERE id = ? 13 ms 4.8%