Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 1:27 PM
Duration
115.84 ms
Status
200
Response Size
6.6 KB
Error
No

Performance Breakdown

Database
11.9% (8 queries)
View Rendering
12.4%
Application Logic
75.7%
Other Operations
0.0%
Total Operations
20
Slowest Operation
115.84 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 267.7ms 535.4ms 803.2ms 1070.9ms

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
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... 2 ms 1.7%
posts/show 37 ms 31.9%
home#errors 116 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... 4 ms 3.5%
layouts/application 9 ms 7.8%
home#errors 116 ms 100.0%
home#errors 116 ms 100.0%
home/index 13 ms 11.2%
layouts/application 34 ms 29.4%
home#errors 116 ms 100.0%
home#errors 116 ms 100.0%
posts/show 40 ms 34.5%
home#errors 116 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... 23 ms 19.9%
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 > ? 25 ms 21.6%
home#errors 116 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 31 ms 26.8%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 4 ms 3.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 21.6%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 13 ms 11.2%