Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 9:30 AM
Duration
64.17 ms
Status
204
Response Size
1.7 KB
Error
No

Performance Breakdown

Database
27.7% (6 queries)
View Rendering
30.1%
Application Logic
42.3%
Other Operations
0.0%
Total Operations
14
Slowest Operation
64.17 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 113.9ms 227.8ms 341.6ms 455.5ms

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
home/index 38 ms 59.2%
home/index 23 ms 35.8%
layouts/application 20 ms 31.2%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 25 ms 39.0%
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... 16 ms 24.9%
users/index 30 ms 46.8%
home#errors 64 ms 100.0%
posts/show 26 ms 40.5%
SELECT * FROM posts WHERE created_at > ? 22 ms 34.3%
SELECT name FROM users 35 ms 54.5%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 26.5%
home#errors 64 ms 100.0%
home#errors 64 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... 11 ms 17.1%