Request Details

Route
/api_complex GET
Timestamp
Sep 14, 2026 4:04 PM
Duration
216.23 ms
Status
204
Response Size
42 KB
Error
No

Performance Breakdown

Database
4.7% (4 queries)
View Rendering
8.1%
Application Logic
87.2%
Other Operations
0.0%
Total Operations
13
Slowest Operation
216.23 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 309.8ms 619.6ms 929.4ms 1239.2ms

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 * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 8.8%
home#api_complex 216 ms 100.0%
layouts/application 32 ms 14.8%
posts/show 17 ms 7.9%
home/index 12 ms 5.5%
posts/show 39 ms 18.0%
SELECT * FROM posts WHERE created_at > ? 2 ms 0.9%
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... 13 ms 6.0%
home#api_complex 216 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... 24 ms 11.1%
home#api_complex 216 ms 100.0%
home#api_complex 216 ms 100.0%
home#api_complex 216 ms 100.0%