Request Details

Route
/error_prone GET
Timestamp
Sep 11, 2026 4:58 AM
Duration
43.09 ms
Status
503
Response Size
1.2 KB
Error
Yes

Performance Breakdown

Database
30.0% (7 queries)
View Rendering
35.9%
Application Logic
34.0%
Other Operations
0.0%
Total Operations
20
Slowest Operation
43.09 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 126.6ms 253.2ms 379.8ms 506.4ms

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
home/index 27 ms 62.7%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 12 ms 27.8%
home#errors 43 ms 100.0%
home#errors 43 ms 100.0%
posts/show 22 ms 51.1%
SELECT name FROM users 28 ms 65.0%
home/index 23 ms 53.4%
home#errors 43 ms 100.0%
layouts/application 30 ms 69.6%
layouts/application 23 ms 53.4%
home#errors 43 ms 100.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 22 ms 51.1%
posts/show 7 ms 16.2%
posts/show 27 ms 62.7%
posts/show 8 ms 18.6%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 35 ms 81.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 17 ms 39.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 10 ms 23.2%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 28 ms 65.0%
home/index 15 ms 34.8%