Request Details

Route
/slow GET
Timestamp
Sep 20, 2026 10:53 AM
Duration
400.69 ms
Status
200
Response Size
150 KB
Error
No

Performance Breakdown

Database
6.4% (8 queries)
View Rendering
5.2%
Application Logic
88.4%
Other Operations
0.0%
Total Operations
20
Slowest Operation
400.69 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 679.8ms 1359.6ms 2039.3ms 2719.1ms

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 401 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 23 ms 5.7%
users/index 17 ms 4.2%
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... 20 ms 5.0%
users/index 31 ms 7.7%
home#slow 401 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 30 ms 7.5%
home#slow 401 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 7 ms 1.7%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 16 ms 4.0%
layouts/application 34 ms 8.5%
SELECT name FROM users 32 ms 8.0%
UPDATE posts SET view_count = view_count + ? WHERE published = ? 27 ms 6.7%
home#slow 401 ms 100.0%
layouts/application 36 ms 9.0%
home/index 10 ms 2.5%
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... 19 ms 4.7%
home/index 13 ms 3.2%
home#slow 401 ms 100.0%
home#slow 401 ms 100.0%