Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 4:38 AM
Duration
473.95 ms
Status
200
Response Size
82 KB
Error
No

Performance Breakdown

Database
4.0% (8 queries)
View Rendering
6.5%
Application Logic
89.5%
Other Operations
0.0%
Total Operations
24
Slowest Operation
473.95 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 794.4ms 1588.9ms 2383.3ms 3177.7ms

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 474 ms 100.0%
home/index 11 ms 2.3%
home/index 19 ms 4.0%
home#slow 474 ms 100.0%
home#slow 474 ms 100.0%
home/index 32 ms 6.8%
layouts/application 9 ms 1.9%
SELECT name FROM users 11 ms 2.3%
home#slow 474 ms 100.0%
users/index 26 ms 5.5%
home#slow 474 ms 100.0%
home#slow 474 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 35 ms 7.4%
users/index 24 ms 5.1%
SELECT * FROM users WHERE id = ? 19 ms 4.0%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 14 ms 3.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 28 ms 5.9%
users/index 37 ms 7.8%
SELECT name FROM users 6 ms 1.3%
posts/show 17 ms 3.6%
DELETE FROM comments WHERE created_at < ? 5 ms 1.1%
layouts/application 19 ms 4.0%
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... 10 ms 2.1%
posts/show 12 ms 2.5%