Request Details

Route
/slow GET
Timestamp
Sep 20, 2026 1:17 AM
Duration
481.55 ms
Status
204
Response Size
110 KB
Error
No

Performance Breakdown

Database
2.2% (4 queries)
View Rendering
5.4%
Application Logic
92.4%
Other Operations
0.0%
Total Operations
23
Slowest Operation
481.55 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 1172.0ms 2344.0ms 3516.0ms 4687.9ms

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
home#slow 482 ms 100.0%
users/index 33 ms 6.9%
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... 29 ms 6.0%
posts/show 38 ms 7.9%
layouts/application 35 ms 7.3%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 24 ms 5.0%
home#slow 482 ms 100.0%
layouts/application 7 ms 1.5%
home#slow 482 ms 100.0%
users/index 23 ms 4.8%
layouts/application 17 ms 3.5%
home#slow 482 ms 100.0%
home#slow 482 ms 100.0%
users/index 26 ms 5.4%
layouts/application 24 ms 5.0%
posts/show 12 ms 2.5%
home#slow 482 ms 100.0%
home#slow 482 ms 100.0%
home#slow 482 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 35 ms 7.3%
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... 13 ms 2.7%
home#slow 482 ms 100.0%
home/index 38 ms 7.9%