Request Details

Route
/api_simple GET
Timestamp
Sep 23, 2026 12:59 AM
Duration
31.68 ms
Status
201
Response Size
1.8 KB
Error
No

Performance Breakdown

Database
29.1% (4 queries)
View Rendering
0.0%
Application Logic
70.9%
Other Operations
0.0%
Total Operations
8
Slowest Operation
31.68 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
Database
0.0ms 44.7ms 89.4ms 134.0ms 178.7ms

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
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... 27 ms 85.2%
home#api_simple 32 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... 6 ms 18.9%
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... 13 ms 41.0%
home#api_simple 32 ms 100.0%
home#api_simple 32 ms 100.0%
DELETE FROM comments WHERE created_at < ? 6 ms 18.9%
home#api_simple 32 ms 100.0%