Request Details

Route
/api_simple GET
Timestamp
Sep 15, 2026 11:43 PM
Duration
11.46 ms
Status
204
Response Size
281 Bytes
Error
No

Performance Breakdown

Database
64.9% (5 queries)
View Rendering
24.9%
Application Logic
10.2%
Other Operations
0.0%
Total Operations
7
Slowest Operation
28.0 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 28.1ms 56.2ms 84.3ms 112.5ms

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 name FROM users 27 ms 235.6%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 8 ms 69.8%
SELECT * FROM posts WHERE created_at > ? 18 ms 157.1%
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 > ? 4 ms 34.9%
home#api_simple 11 ms 100.0%
layouts/application 28 ms 244.4%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 16 ms 139.6%