Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 1:50 AM
Duration
443.86 ms
Status
200
Response Size
86 KB
Error
No

Performance Breakdown

Database
3.7% (7 queries)
View Rendering
6.4%
Application Logic
89.9%
Other Operations
0.0%
Total Operations
20
Slowest Operation
443.86 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 740.5ms 1481.1ms 2221.6ms 2962.1ms

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
posts/show 30 ms 6.8%
home#slow 444 ms 100.0%
home#slow 444 ms 100.0%
layouts/application 26 ms 5.9%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 15 ms 3.4%
users/index 31 ms 7.0%
home#slow 444 ms 100.0%
home/index 23 ms 5.2%
home#slow 444 ms 100.0%
home#slow 444 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 28 ms 6.3%
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... 19 ms 4.3%
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... 7 ms 1.6%
DELETE FROM posts WHERE id = ? 31 ms 7.0%
home#slow 444 ms 100.0%
home/index 13 ms 2.9%
SELECT * FROM users WHERE id = ? 3 ms 0.7%
layouts/application 34 ms 7.7%
users/index 32 ms 7.2%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 7 ms 1.6%