Request Details

Route
/slow GET
Timestamp
Sep 12, 2026 12:56 AM
Duration
286.4 ms
Status
201
Response Size
130 KB
Error
No

Performance Breakdown

Database
2.9% (5 queries)
View Rendering
7.7%
Application Logic
89.4%
Other Operations
0.0%
Total Operations
22
Slowest Operation
286.4 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 721.2ms 1442.3ms 2163.5ms 2884.6ms

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
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 8 ms 2.8%
users/index 35 ms 12.2%
posts/show 29 ms 10.1%
home#slow 286 ms 100.0%
home#slow 286 ms 100.0%
home#slow 286 ms 100.0%
home#slow 286 ms 100.0%
home/index 36 ms 12.6%
home#slow 286 ms 100.0%
home/index 17 ms 5.9%
home#slow 286 ms 100.0%
posts/show 33 ms 11.5%
layouts/application 36 ms 12.6%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 11 ms 3.8%
home#slow 286 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 5 ms 1.7%
home#slow 286 ms 100.0%
home#slow 286 ms 100.0%
home/index 28 ms 9.8%
home/index 9 ms 3.1%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 30 ms 10.5%
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... 30 ms 10.5%