Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 6:20 AM
Duration
422.57 ms
Status
204
Response Size
200 KB
Error
No

Performance Breakdown

Database
3.0% (6 queries)
View Rendering
4.3%
Application Logic
92.7%
Other Operations
0.0%
Total Operations
24
Slowest Operation
422.57 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 1139.7ms 2279.4ms 3419.1ms 4558.7ms

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 DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 26 ms 6.2%
users/index 38 ms 9.0%
layouts/application 19 ms 4.5%
home/index 34 ms 8.0%
home#slow 423 ms 100.0%
home#slow 423 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 20 ms 4.7%
home#slow 423 ms 100.0%
posts/show 12 ms 2.8%
home#slow 423 ms 100.0%
layouts/application 11 ms 2.6%
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... 4 ms 0.9%
home#slow 423 ms 100.0%
home#slow 423 ms 100.0%
layouts/application 40 ms 9.5%
home#slow 423 ms 100.0%
home#slow 423 ms 100.0%
home#slow 423 ms 100.0%
posts/show 5 ms 1.2%
SELECT name FROM users 28 ms 6.6%
home#slow 423 ms 100.0%
users/index 35 ms 8.3%
SELECT * FROM users WHERE id = ? 31 ms 7.3%
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 7.1%