Request Details

Route
/api_complex GET
Timestamp
Sep 09, 2026 10:54 AM
Duration
89.18 ms
Status
201
Response Size
60 KB
Error
No

Performance Breakdown

Database
7.6% (4 queries)
View Rendering
22.8%
Application Logic
69.7%
Other Operations
0.0%
Total Operations
20
Slowest Operation
89.18 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 224.1ms 448.1ms 672.2ms 896.2ms

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
users/index 27 ms 30.3%
home#api_complex 89 ms 100.0%
layouts/application 11 ms 12.3%
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... 17 ms 19.1%
home/index 37 ms 41.5%
home#api_complex 89 ms 100.0%
home#api_complex 89 ms 100.0%
home/index 30 ms 33.6%
home#api_complex 89 ms 100.0%
SELECT id, name FROM users WHERE email = ? 18 ms 20.2%
home/index 25 ms 28.0%
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... 5 ms 5.6%
home#api_complex 89 ms 100.0%
home#api_complex 89 ms 100.0%
posts/show 17 ms 19.1%
users/index 21 ms 23.5%
users/index 11 ms 12.3%
SELECT * FROM users WHERE id = ? 28 ms 31.4%
users/index 25 ms 28.0%
home#api_complex 89 ms 100.0%