Request Details

Route
/slow GET
Timestamp
Sep 17, 2026 12:07 PM
Duration
207.38 ms
Status
204
Response Size
130 KB
Error
No

Performance Breakdown

Database
4.8% (5 queries)
View Rendering
2.9%
Application Logic
92.2%
Other Operations
0.0%
Total Operations
16
Slowest Operation
207.38 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 449.8ms 899.5ms 1349.3ms 1799.1ms

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
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 6 ms 2.9%
home#slow 207 ms 100.0%
home#slow 207 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... 24 ms 11.6%
home#slow 207 ms 100.0%
users/index 12 ms 5.8%
home#slow 207 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 27 ms 13.0%
home#slow 207 ms 100.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 7 ms 3.4%
home/index 24 ms 11.6%
users/index 17 ms 8.2%
home#slow 207 ms 100.0%
home#slow 207 ms 100.0%
home#slow 207 ms 100.0%
DELETE FROM posts WHERE id = ? 23 ms 11.1%