Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 3:26 AM
Duration
430.81 ms
Status
204
Response Size
53 KB
Error
No

Performance Breakdown

Database
6.5% (13 queries)
View Rendering
2.9%
Application Logic
90.6%
Other Operations
0.0%
Total Operations
28
Slowest Operation
430.81 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 1188.5ms 2377.0ms 3565.6ms 4754.1ms

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 431 ms 100.0%
posts/show 24 ms 5.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 35 ms 8.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 27 ms 6.3%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 30 ms 7.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 30 ms 7.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 31 ms 7.2%
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... 10 ms 2.3%
layouts/application 34 ms 7.9%
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... 2 ms 0.5%
home/index 32 ms 7.4%
home#slow 431 ms 100.0%
home#slow 431 ms 100.0%
posts/show 22 ms 5.1%
home#slow 431 ms 100.0%
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... 30 ms 7.0%
home#slow 431 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 > ? 19 ms 4.4%
home#slow 431 ms 100.0%
home#slow 431 ms 100.0%
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 5.1%
home#slow 431 ms 100.0%
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... 21 ms 4.9%
SELECT COUNT(*) FROM comments WHERE post_id = ? 18 ms 4.2%
home#slow 431 ms 100.0%
home#slow 431 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... 35 ms 8.1%
posts/show 24 ms 5.6%