Request Details

Route
/slow GET
Timestamp
Sep 17, 2026 7:45 AM
Duration
280.81 ms
Status
201
Response Size
170 KB
Error
No

Performance Breakdown

Database
5.2% (7 queries)
View Rendering
11.3%
Application Logic
83.5%
Other Operations
0.0%
Total Operations
28
Slowest Operation
280.81 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 588.4ms 1176.8ms 1765.2ms 2353.7ms

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
home#slow 281 ms 100.0%
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... 28 ms 10.0%
users/index 5 ms 1.8%
home/index 24 ms 8.5%
home/index 39 ms 13.9%
home#slow 281 ms 100.0%
layouts/application 19 ms 6.8%
home#slow 281 ms 100.0%
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 > ? 12 ms 4.3%
home/index 16 ms 5.7%
users/index 19 ms 6.8%
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... 22 ms 7.8%
layouts/application 10 ms 3.6%
home#slow 281 ms 100.0%
home/index 15 ms 5.3%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 12 ms 4.3%
home#slow 281 ms 100.0%
home#slow 281 ms 100.0%
users/index 19 ms 6.8%
posts/show 20 ms 7.1%
layouts/application 29 ms 10.3%
home/index 25 ms 8.9%
users/index 9 ms 3.2%
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 2.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 7 ms 2.5%
posts/show 17 ms 6.1%
home#slow 281 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 34 ms 12.1%