Request Details

Route
/api_simple GET
Timestamp
Sep 22, 2026 8:31 PM
Duration
39.03 ms
Status
201
Response Size
1.2 KB
Error
No

Performance Breakdown

Database
24.8% (3 queries)
View Rendering
27.9%
Application Logic
47.3%
Other Operations
0.0%
Total Operations
7
Slowest Operation
39.03 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 41.3ms 82.5ms 123.8ms 165.1ms

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_simple 39 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 10 ms 25.6%
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... 27 ms 69.2%
layouts/application 9 ms 23.1%
home#api_simple 39 ms 100.0%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 4 ms 10.2%
layouts/application 37 ms 94.8%