Request Details

Route
/api_complex GET
Timestamp
Sep 21, 2026 5:45 AM
Duration
280.21 ms
Status
204
Response Size
12 KB
Error
No

Performance Breakdown

Database
4.2% (4 queries)
View Rendering
7.0%
Application Logic
88.8%
Other Operations
0.0%
Total Operations
14
Slowest Operation
280.21 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 394.5ms 789.0ms 1183.5ms 1578.1ms

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#api_complex 280 ms 100.0%
home#api_complex 280 ms 100.0%
home#api_complex 280 ms 100.0%
home/index 8 ms 2.9%
DELETE FROM comments WHERE created_at < ? 2 ms 0.7%
home#api_complex 280 ms 100.0%
home#api_complex 280 ms 100.0%
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... 32 ms 11.4%
users/index 6 ms 2.1%
layouts/application 30 ms 10.7%
posts/show 38 ms 13.6%
SELECT name FROM users 26 ms 9.3%
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... 6 ms 2.1%
layouts/application 29 ms 10.3%