Request Details

Route
/error_prone GET
Timestamp
Sep 09, 2026 9:47 AM
Duration
59.08 ms
Status
204
Response Size
5.3 KB
Error
No

Performance Breakdown

Database
26.2% (8 queries)
View Rendering
29.0%
Application Logic
44.8%
Other Operations
0.0%
Total Operations
19
Slowest Operation
59.08 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 131.8ms 263.7ms 395.5ms 527.3ms

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
home/index 13 ms 22.0%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 18 ms 30.5%
home/index 39 ms 66.0%
DELETE FROM comments WHERE created_at < ? 26 ms 44.0%
home/index 10 ms 16.9%
home#errors 59 ms 100.0%
home#errors 59 ms 100.0%
SELECT name FROM users 2 ms 3.4%
DELETE FROM posts WHERE id = ? 2 ms 3.4%
home/index 23 ms 38.9%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 31 ms 52.5%
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... 23 ms 38.9%
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... 4 ms 6.8%
home#errors 59 ms 100.0%
users/index 28 ms 47.4%
posts/show 19 ms 32.2%
home/index 21 ms 35.5%
home#errors 59 ms 100.0%
SELECT name FROM users 32 ms 54.2%