Request Details

Route
/error_prone GET
Timestamp
Sep 14, 2026 10:30 AM
Duration
23.32 ms
Status
204
Response Size
1.1 KB
Error
No

Performance Breakdown

Database
40.7% (10 queries)
View Rendering
24.0%
Application Logic
35.4%
Other Operations
0.0%
Total Operations
20
Slowest Operation
36.0 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 82.4ms 164.8ms 247.2ms 329.6ms

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 14 ms 60.0%
posts/show 5 ms 21.4%
home#errors 23 ms 100.0%
home#errors 23 ms 100.0%
posts/show 18 ms 77.2%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 10 ms 42.9%
posts/show 6 ms 25.7%
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... 24 ms 102.9%
SELECT * FROM users WHERE id = ? 3 ms 12.9%
posts/show 36 ms 154.4%
SELECT * FROM posts WHERE created_at > ? 11 ms 47.2%
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... 8 ms 34.3%
home#errors 23 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 35 ms 150.1%
home#errors 23 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 11 ms 47.2%
home#errors 23 ms 100.0%
SELECT * FROM users WHERE id = ? 20 ms 85.8%
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 8.6%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 10 ms 42.9%