Request Details

Route
/api_complex GET
Timestamp
Sep 22, 2026 3:02 PM
Duration
181.26 ms
Status
204
Response Size
76 KB
Error
No

Performance Breakdown

Database
1.4% (2 queries)
View Rendering
16.8%
Application Logic
81.8%
Other Operations
0.0%
Total Operations
16
Slowest Operation
181.26 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 276.8ms 553.7ms 830.5ms 1107.3ms

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
UPDATE posts SET view_count = view_count + ? WHERE published = ? 8 ms 4.4%
posts/show 22 ms 12.1%
home/index 19 ms 10.5%
users/index 25 ms 13.8%
home#api_complex 181 ms 100.0%
home#api_complex 181 ms 100.0%
users/index 20 ms 11.0%
home/index 12 ms 6.6%
home/index 19 ms 10.5%
posts/show 28 ms 15.4%
layouts/application 13 ms 7.2%
home#api_complex 181 ms 100.0%
home#api_complex 181 ms 100.0%
users/index 28 ms 15.4%
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... 7 ms 3.9%
home#api_complex 181 ms 100.0%