Request Details

Route
/robots.txt GET
Timestamp
Sep 16, 2026 5:59 PM
Duration
10.0 ms
Status
200
Response Size
100 Bytes
Error
No

Performance Breakdown

Database
45.3% (3 queries)
View Rendering
54.7%
Application Logic
0.0%
Other Operations
0.0%
Total Operations
6
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
View
Database
0.0ms 40.3ms 80.5ms 120.8ms 161.0ms

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
layouts/application 36 ms 360.0%
home/index 22 ms 220.0%
users/index 30 ms 300.0%
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... 29 ms 290.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 15 ms 150.0%
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... 29 ms 290.0%