Request Details

Route
/error_prone GET
Timestamp
Sep 23, 2026 7:39 AM
Duration
53.21 ms
Status
201
Response Size
2.9 KB
Error
No

Performance Breakdown

Database
25.4% (8 queries)
View Rendering
32.5%
Application Logic
42.2%
Other Operations
0.0%
Total Operations
17
Slowest Operation
53.21 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 126.2ms 252.4ms 378.6ms 504.8ms

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 35 ms 65.8%
SELECT * FROM posts WHERE created_at > ? 26 ms 48.9%
home#errors 53 ms 100.0%
home#errors 53 ms 100.0%
SELECT name FROM users 1 ms 1.9%
SELECT * FROM users WHERE id = ? 19 ms 35.7%
home#errors 53 ms 100.0%
layouts/application 29 ms 54.5%
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... 15 ms 28.2%
users/index 23 ms 43.2%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 20 ms 37.6%
posts/show 37 ms 69.5%
SELECT * FROM users WHERE id = ? 21 ms 39.5%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 2 ms 3.8%
users/index 40 ms 75.2%
DELETE FROM comments WHERE created_at < ? 24 ms 45.1%
home#errors 53 ms 100.0%