Request Details

Route
/slow GET
Timestamp
Sep 21, 2026 8:22 PM
Duration
409.32 ms
Status
201
Response Size
72 KB
Error
No

Performance Breakdown

Database
1.7% (5 queries)
View Rendering
4.5%
Application Logic
93.8%
Other Operations
0.0%
Total Operations
27
Slowest Operation
409.32 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 1309.2ms 2618.4ms 3927.6ms 5236.9ms

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.*, 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 0.5%
posts/show 35 ms 8.6%
home#slow 409 ms 100.0%
posts/show 13 ms 3.2%
layouts/application 6 ms 1.5%
home#slow 409 ms 100.0%
home#slow 409 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 28 ms 6.8%
home#slow 409 ms 100.0%
posts/show 37 ms 9.0%
home#slow 409 ms 100.0%
posts/show 14 ms 3.4%
home#slow 409 ms 100.0%
home#slow 409 ms 100.0%
home#slow 409 ms 100.0%
layouts/application 6 ms 1.5%
users/index 31 ms 7.6%
layouts/application 27 ms 6.6%
home#slow 409 ms 100.0%
home#slow 409 ms 100.0%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 10 ms 2.4%
home#slow 409 ms 100.0%
home#slow 409 ms 100.0%
posts/show 38 ms 9.3%
layouts/application 29 ms 7.1%
SELECT name FROM users 22 ms 5.4%
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... 27 ms 6.6%