Request Details

Route
/slow GET
Timestamp
Sep 11, 2026 12:42 AM
Duration
376.93 ms
Status
201
Response Size
230 KB
Error
No

Performance Breakdown

Database
10.0% (6 queries)
View Rendering
10.7%
Application Logic
79.3%
Other Operations
0.0%
Total Operations
16
Slowest Operation
376.93 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 356.4ms 712.9ms 1069.3ms 1425.8ms

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 377 ms 100.0%
users/index 13 ms 3.4%
home/index 27 ms 7.2%
SELECT * FROM users WHERE id = ? 24 ms 6.4%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 23 ms 6.1%
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... 24 ms 6.4%
posts/show 31 ms 8.2%
home#slow 377 ms 100.0%
home#slow 377 ms 100.0%
DELETE FROM posts WHERE id = ? 19 ms 5.0%
users/index 7 ms 1.9%
SELECT * FROM users WHERE id = ? 20 ms 5.3%
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... 32 ms 8.5%
users/index 31 ms 8.2%
layouts/application 5 ms 1.3%
posts/show 39 ms 10.3%