Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 2:01 AM
Duration
603.94 ms
Status
200
Response Size
110 KB
Error
No

Performance Breakdown

Database
3.7% (10 queries)
View Rendering
3.8%
Application Logic
92.5%
Other Operations
0.0%
Total Operations
28
Slowest Operation
603.94 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 1468.4ms 2936.7ms 4405.1ms 5873.4ms

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/index 33 ms 5.5%
home/index 25 ms 4.1%
home/index 24 ms 4.0%
posts/show 32 ms 5.3%
home#slow 604 ms 100.0%
home#slow 604 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 28 ms 4.6%
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... 21 ms 3.5%
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 3.1%
home#slow 604 ms 100.0%
home/index 13 ms 2.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 20 ms 3.3%
home#slow 604 ms 100.0%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 33 ms 5.5%
posts/show 16 ms 2.6%
home#slow 604 ms 100.0%
layouts/application 15 ms 2.5%
SELECT * FROM posts WHERE created_at > ? 6 ms 1.0%
posts/show 40 ms 6.6%
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 > ? 23 ms 3.8%
home#slow 604 ms 100.0%
home#slow 604 ms 100.0%
home#slow 604 ms 100.0%
SELECT * FROM users WHERE id = ? 6 ms 1.0%
home/index 23 ms 3.8%
home#slow 604 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 > ? 35 ms 5.8%
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... 26 ms 4.3%