Request Details

Route
/api_simple GET
Timestamp
Sep 22, 2026 7:41 PM
Duration
10.0 ms
Status
201
Response Size
2.1 KB
Error
No

Performance Breakdown

Database
55.8% (4 queries)
View Rendering
31.4%
Application Logic
12.8%
Other Operations
0.0%
Total Operations
8
Slowest Operation
36.0 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 39.0ms 78.0ms 117.0ms 156.0ms

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 13 ms 130.0%
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... 21 ms 210.0%
home#api_simple 10 ms 100.0%
home#api_simple 10 ms 100.0%
layouts/application 36 ms 360.0%
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... 24 ms 240.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 320.0%
SELECT name FROM users 10 ms 100.0%