Request Details

Route
/users/:id GET
Timestamp
Sep 10, 2026 4:35 AM
Duration
253.21 ms
Status
204
Response Size
14 KB
Error
No

Performance Breakdown

Database
15.2% (5 queries)
View Rendering
0.0%
Application Logic
84.8%
Other Operations
0.0%
Total Operations
7
Slowest Operation
253.21 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
Database
0.0ms 149.4ms 298.7ms 448.1ms 597.4ms

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 4 ms 1.6%
SELECT * FROM posts WHERE created_at > ? 9 ms 3.6%
users#show 253 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 25 ms 9.9%
users#show 253 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... 33 ms 13.0%
SELECT id, name FROM users WHERE email = ? 20 ms 7.9%