Request Details

Route
/api_complex GET
Timestamp
Sep 18, 2026 10:24 PM
Duration
213.81 ms
Status
201
Response Size
56 KB
Error
No

Performance Breakdown

Database
2.7% (4 queries)
View Rendering
4.7%
Application Logic
92.6%
Other Operations
0.0%
Total Operations
16
Slowest Operation
213.81 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 404.2ms 808.3ms 1212.5ms 1616.7ms

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 214 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 16 ms 7.5%
posts/show 12 ms 5.6%
home#api_complex 214 ms 100.0%
home#api_complex 214 ms 100.0%
posts/show 19 ms 8.9%
layouts/application 7 ms 3.3%
home#api_complex 214 ms 100.0%
SELECT name FROM users 16 ms 7.5%
layouts/application 9 ms 4.2%
home#api_complex 214 ms 100.0%
users/index 29 ms 13.6%
home#api_complex 214 ms 100.0%
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... 11 ms 5.1%
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... 1 ms 0.5%
home#api_complex 214 ms 100.0%