Request Details

Route
/error_prone GET
Timestamp
Sep 22, 2026 3:52 PM
Duration
49.45 ms
Status
200
Response Size
6.8 KB
Error
No

Performance Breakdown

Database
25.2% (6 queries)
View Rendering
29.9%
Application Logic
44.9%
Other Operations
0.0%
Total Operations
17
Slowest Operation
49.45 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 137.8ms 275.6ms 413.4ms 551.3ms

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... 13 ms 26.3%
SELECT * FROM users WHERE id = ? 35 ms 70.8%
home#errors 49 ms 100.0%
home#errors 49 ms 100.0%
home/index 34 ms 68.8%
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... 18 ms 36.4%
home/index 10 ms 20.2%
home#errors 49 ms 100.0%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 34 ms 68.8%
layouts/application 18 ms 36.4%
users/index 39 ms 78.9%
home/index 26 ms 52.6%
posts/show 38 ms 76.8%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 10 ms 20.2%
home#errors 49 ms 100.0%
home#errors 49 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 58.6%