Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 8:50 AM
Duration
55.62 ms
Status
200
Response Size
5.5 KB
Error
No

Performance Breakdown

Database
31.9% (4 queries)
View Rendering
17.3%
Application Logic
50.7%
Other Operations
0.0%
Total Operations
9
Slowest Operation
55.62 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 82.2ms 164.4ms 246.6ms 328.9ms

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
users/index 38 ms 68.3%
home#errors 56 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 23 ms 41.4%
home#errors 56 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... 33 ms 59.3%
home#errors 56 ms 100.0%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 25 ms 44.9%
home/index 19 ms 34.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 24 ms 43.2%