Request Details

Route
/slow GET
Timestamp
Sep 18, 2026 6:37 AM
Duration
168.7 ms
Status
204
Response Size
100 KB
Error
No

Performance Breakdown

Database
5.1% (5 queries)
View Rendering
10.5%
Application Logic
84.4%
Other Operations
0.0%
Total Operations
17
Slowest Operation
168.7 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 299.8ms 599.6ms 899.4ms 1199.2ms

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 posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 4 ms 2.4%
home#slow 169 ms 100.0%
home/index 9 ms 5.3%
users/index 26 ms 15.4%
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... 30 ms 17.8%
home#slow 169 ms 100.0%
users/index 12 ms 7.1%
home/index 32 ms 19.0%
home#slow 169 ms 100.0%
home#slow 169 ms 100.0%
SELECT * FROM users WHERE id = ? 13 ms 7.7%
home#slow 169 ms 100.0%
home/index 25 ms 14.8%
home#slow 169 ms 100.0%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 7 ms 4.1%
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 > ? 7 ms 4.1%
layouts/application 22 ms 13.0%