Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 7:08 AM
Duration
84.86 ms
Status
201
Response Size
3 KB
Error
No

Performance Breakdown

Database
10.4% (3 queries)
View Rendering
17.3%
Application Logic
72.3%
Other Operations
0.0%
Total Operations
10
Slowest Operation
84.86 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 117.4ms 234.7ms 352.1ms 469.4ms

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 * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 14 ms 16.5%
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... 24 ms 28.3%
users/index 37 ms 43.6%
home/index 33 ms 38.9%
home#errors 85 ms 100.0%
home#errors 85 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 11 ms 13.0%
home#errors 85 ms 100.0%
home#errors 85 ms 100.0%
posts/show 11 ms 13.0%