Request Details

Route
/api_complex GET
Timestamp
Sep 11, 2026 2:02 AM
Duration
169.46 ms
Status
200
Response Size
55 KB
Error
No

Performance Breakdown

Database
2.9% (3 queries)
View Rendering
6.5%
Application Logic
90.5%
Other Operations
0.0%
Total Operations
19
Slowest Operation
169.46 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 467.9ms 935.8ms 1403.7ms 1871.6ms

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 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... 34 ms 20.1%
home#api_complex 169 ms 100.0%
home#api_complex 169 ms 100.0%
home#api_complex 169 ms 100.0%
home#api_complex 169 ms 100.0%
posts/show 31 ms 18.3%
home#api_complex 169 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 10.0%
home#api_complex 169 ms 100.0%
users/index 15 ms 8.9%
home#api_complex 169 ms 100.0%
users/index 19 ms 11.2%
home#api_complex 169 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... 4 ms 2.4%
home/index 11 ms 6.5%
users/index 13 ms 7.7%
home#api_complex 169 ms 100.0%
home/index 33 ms 19.5%
home#api_complex 169 ms 100.0%