Request Details

Route
/error_prone GET
Timestamp
Sep 17, 2026 12:02 PM
Duration
21.78 ms
Status
201
Response Size
1.2 KB
Error
No

Performance Breakdown

Database
29.2% (7 queries)
View Rendering
51.3%
Application Logic
19.5%
Other Operations
0.0%
Total Operations
17
Slowest Operation
37.0 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 83.8ms 167.7ms 251.5ms 335.3ms

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
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 20 ms 91.8%
layouts/application 12 ms 55.1%
posts/show 37 ms 169.9%
home/index 29 ms 133.2%
users/index 13 ms 59.7%
layouts/application 27 ms 124.0%
posts/show 32 ms 146.9%
SELECT * FROM posts WHERE created_at > ? 8 ms 36.7%
home#errors 22 ms 100.0%
SELECT * FROM users WHERE id = ? 4 ms 18.4%
home#errors 22 ms 100.0%
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... 2 ms 9.2%
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... 25 ms 114.8%
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... 21 ms 96.4%
home#errors 22 ms 100.0%
SELECT * FROM users WHERE id = ? 18 ms 82.7%
home/index 22 ms 101.0%