Request Details

Route
/robots.txt GET
Timestamp
Sep 12, 2026 10:21 PM
Duration
10.0 ms
Status
200
Response Size
160 Bytes
Error
No

Performance Breakdown

Database
53.1% (5 queries)
View Rendering
39.2%
Application Logic
7.7%
Other Operations
0.0%
Total Operations
8
Slowest Operation
38.0 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 32.5ms 65.0ms 97.5ms 130.0ms

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
DELETE FROM comments WHERE created_at < ? 7 ms 70.0%
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... 8 ms 80.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 16 ms 160.0%
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... 22 ms 220.0%
robots.txt#index 10 ms 100.0%
SELECT name FROM users 16 ms 160.0%
posts/show 13 ms 130.0%
users/index 38 ms 380.0%