Request Details

Route
/error_prone GET
Timestamp
Sep 18, 2026 4:27 AM
Duration
86.78 ms
Status
200
Response Size
2.5 KB
Error
No

Performance Breakdown

Database
21.2% (6 queries)
View Rendering
17.2%
Application Logic
61.6%
Other Operations
0.0%
Total Operations
18
Slowest Operation
86.78 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 176.0ms 351.9ms 527.9ms 703.9ms

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
home#errors 87 ms 100.0%
layouts/application 13 ms 15.0%
posts/show 18 ms 20.7%
home#errors 87 ms 100.0%
users/index 7 ms 8.1%
users/index 32 ms 36.9%
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... 28 ms 32.3%
layouts/application 25 ms 28.8%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 21.9%
layouts/application 8 ms 9.2%
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 > ? 29 ms 33.4%
home#errors 87 ms 100.0%
home#errors 87 ms 100.0%
SELECT * FROM users WHERE id = ? 10 ms 11.5%
home#errors 87 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 > ? 29 ms 33.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 34 ms 39.2%
layouts/application 18 ms 20.7%