Request Details

Route
/slow GET
Timestamp
Sep 19, 2026 8:51 PM
Duration
179.02 ms
Status
200
Response Size
77 KB
Error
No

Performance Breakdown

Database
9.8% (10 queries)
View Rendering
14.1%
Application Logic
76.1%
Other Operations
0.0%
Total Operations
25
Slowest Operation
179.02 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 411.5ms 823.1ms 1234.6ms 1646.1ms

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
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 17 ms 9.5%
home#slow 179 ms 100.0%
home#slow 179 ms 100.0%
users/index 34 ms 19.0%
SELECT COUNT(*) FROM comments WHERE post_id = ? 21 ms 11.7%
users/index 6 ms 3.4%
posts/show 22 ms 12.3%
posts/show 38 ms 21.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 33 ms 18.4%
home#slow 179 ms 100.0%
layouts/application 31 ms 17.3%
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... 25 ms 14.0%
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... 4 ms 2.2%
posts/show 33 ms 18.4%
home#slow 179 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 22 ms 12.3%
home#slow 179 ms 100.0%
DELETE FROM comments WHERE created_at < ? 13 ms 7.3%
home#slow 179 ms 100.0%
home/index 35 ms 19.6%
layouts/application 33 ms 18.4%
home#slow 179 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 18 ms 10.1%
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... 6 ms 3.4%
SELECT COUNT(*) FROM comments WHERE post_id = ? 2 ms 1.1%