Request Details

Route
/slow GET
Timestamp
Sep 20, 2026 8:24 AM
Duration
228.19 ms
Status
200
Response Size
220 KB
Error
No

Performance Breakdown

Database
7.6% (8 queries)
View Rendering
8.4%
Application Logic
84.0%
Other Operations
0.0%
Total Operations
22
Slowest Operation
228.19 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 475.3ms 950.7ms 1426.0ms 1901.4ms

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 228 ms 100.0%
layouts/application 29 ms 12.7%
home#slow 228 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 7 ms 3.1%
layouts/application 32 ms 14.0%
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... 2 ms 0.9%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 12 ms 5.3%
posts/show 17 ms 7.4%
home#slow 228 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... 34 ms 14.9%
posts/show 19 ms 8.3%
SELECT * FROM users WHERE id = ? 30 ms 13.1%
home#slow 228 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 24 ms 10.5%
layouts/application 18 ms 7.9%
home#slow 228 ms 100.0%
posts/show 14 ms 6.1%
layouts/application 30 ms 13.1%
home#slow 228 ms 100.0%
home#slow 228 ms 100.0%
DELETE FROM posts WHERE id = ? 34 ms 14.9%
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... 2 ms 0.9%