Request Details

Route
/robots.txt GET
Timestamp
Sep 21, 2026 2:58 PM
Duration
10.0 ms
Status
503
Response Size
705 Bytes
Error
Yes

Performance Breakdown

Database
43.8% (3 queries)
View Rendering
44.4%
Application Logic
11.8%
Other Operations
0.0%
Total Operations
8
Slowest Operation
39.0 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 42.3ms 84.5ms 126.8ms 169.0ms

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
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... 20 ms 200.0%
home/index 39 ms 390.0%
home/index 29 ms 290.0%
robots.txt#index 10 ms 100.0%
SELECT name FROM users 20 ms 200.0%
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... 34 ms 340.0%
posts/show 7 ms 70.0%
robots.txt#index 10 ms 100.0%