Request Details

Route
/api_simple GET
Timestamp
Sep 22, 2026 10:28 AM
Duration
14.53 ms
Status
204
Response Size
1.8 KB
Error
No

Performance Breakdown

Database
4.4% (2 queries)
View Rendering
63.4%
Application Logic
32.2%
Other Operations
0.0%
Total Operations
8
Slowest Operation
38.0 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 33.9ms 67.8ms 101.7ms 135.6ms

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
layouts/application 27 ms 185.8%
layouts/application 38 ms 261.5%
home#api_simple 15 ms 100.0%
home#api_simple 15 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... 5 ms 34.4%
users/index 21 ms 144.5%
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 > ? 1 ms 6.9%
home#api_simple 15 ms 100.0%