Request Details

Route
/api_complex GET
Timestamp
Sep 23, 2026 1:15 AM
Duration
245.22 ms
Status
204
Response Size
55 KB
Error
No

Performance Breakdown

Database
7.9% (4 queries)
View Rendering
2.9%
Application Logic
89.2%
Other Operations
0.0%
Total Operations
10
Slowest Operation
245.22 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 275.0ms 549.9ms 824.9ms 1099.9ms

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 245 ms 100.0%
home#api_complex 245 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 10 ms 4.1%
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... 33 ms 13.5%
home/index 11 ms 4.5%
home#api_complex 245 ms 100.0%
posts/show 21 ms 8.6%
home#api_complex 245 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... 16 ms 6.5%
SELECT name FROM users 28 ms 11.4%