Request Details

Route
/error_prone GET
Timestamp
Sep 21, 2026 7:39 PM
Duration
45.85 ms
Status
204
Response Size
5 KB
Error
No

Performance Breakdown

Database
31.9% (7 queries)
View Rendering
17.3%
Application Logic
50.8%
Other Operations
0.0%
Total Operations
16
Slowest Operation
45.85 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 112.8ms 225.6ms 338.4ms 451.3ms

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... 29 ms 63.2%
home#errors 46 ms 100.0%
users/index 9 ms 19.6%
SELECT name FROM users 6 ms 13.1%
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... 11 ms 24.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 23 ms 50.2%
users/index 24 ms 52.3%
users/index 27 ms 58.9%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 33 ms 72.0%
home#errors 46 ms 100.0%
SELECT * FROM users WHERE id = ? 21 ms 45.8%
home#errors 46 ms 100.0%
home#errors 46 ms 100.0%
users/index 18 ms 39.3%
home#errors 46 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 21 ms 45.8%