Request Details

Route
/api_complex GET
Timestamp
Sep 17, 2026 6:12 AM
Duration
256.99 ms
Status
201
Response Size
52 KB
Error
No

Performance Breakdown

Database
5.5% (5 queries)
View Rendering
6.9%
Application Logic
87.7%
Other Operations
0.0%
Total Operations
18
Slowest Operation
256.99 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 513.0ms 1026.0ms 1538.9ms 2051.9ms

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/index 30 ms 11.7%
SELECT * FROM users WHERE id = ? 2 ms 0.8%
layouts/application 6 ms 2.3%
home#api_complex 257 ms 100.0%
SELECT id, name FROM users WHERE email = ? 21 ms 8.2%
posts/show 32 ms 12.5%
home#api_complex 257 ms 100.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 30 ms 11.7%
layouts/application 12 ms 4.7%
home#api_complex 257 ms 100.0%
home#api_complex 257 ms 100.0%
home#api_complex 257 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... 35 ms 13.6%
home#api_complex 257 ms 100.0%
posts/show 33 ms 12.8%
home#api_complex 257 ms 100.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 24 ms 9.3%
layouts/application 28 ms 10.9%