Request Details

Route
/comments POST
Timestamp
Sep 22, 2026 3:57 PM
Duration
28.83 ms
Status
200
Response Size
16 KB
Error
No

Performance Breakdown

Database
14.5% (3 queries)
View Rendering
33.4%
Application Logic
52.1%
Other Operations
0.0%
Total Operations
7
Slowest Operation
28.83 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 27.7ms 55.3ms 83.0ms 110.7ms

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 WHERE id = ? 3 ms 10.4%
users/index 19 ms 65.9%
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... 10 ms 34.7%
users/index 18 ms 62.4%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 3 ms 10.4%
comments#create 29 ms 100.0%
comments#create 29 ms 100.0%