Request Details

Route
/slow GET
Timestamp
Sep 16, 2026 9:07 AM
Duration
152.45 ms
Status
200
Response Size
160 KB
Error
No

Performance Breakdown

Database
3.1% (4 queries)
View Rendering
10.5%
Application Logic
86.4%
Other Operations
0.0%
Total Operations
21
Slowest Operation
152.45 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 441.1ms 882.2ms 1323.4ms 1764.5ms

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 152 ms 100.0%
users/index 37 ms 24.3%
home/index 19 ms 12.5%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 23 ms 15.1%
home#slow 152 ms 100.0%
home#slow 152 ms 100.0%
home#slow 152 ms 100.0%
posts/show 16 ms 10.5%
home#slow 152 ms 100.0%
users/index 27 ms 17.7%
home#slow 152 ms 100.0%
SELECT * FROM users WHERE id = ? 18 ms 11.8%
home#slow 152 ms 100.0%
posts/show 29 ms 19.0%
home#slow 152 ms 100.0%
home/index 27 ms 17.7%
home#slow 152 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 3 ms 2.0%
users/index 31 ms 20.3%
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... 10 ms 6.6%
home#slow 152 ms 100.0%