Request Details

Route
/slow GET
Timestamp
Sep 19, 2026 11:43 PM
Duration
280.3 ms
Status
200
Response Size
61 KB
Error
No

Performance Breakdown

Database
2.9% (3 queries)
View Rendering
4.1%
Application Logic
93.0%
Other Operations
0.0%
Total Operations
18
Slowest Operation
280.3 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 753.5ms 1507.0ms 2260.5ms 3014.0ms

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 280 ms 100.0%
home#slow 280 ms 100.0%
users/index 5 ms 1.8%
home#slow 280 ms 100.0%
home/index 38 ms 13.6%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 11.4%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 33 ms 11.8%
posts/show 28 ms 10.0%
home#slow 280 ms 100.0%
home#slow 280 ms 100.0%
layouts/application 25 ms 8.9%
users/index 29 ms 10.3%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 21 ms 7.5%
home#slow 280 ms 100.0%
home#slow 280 ms 100.0%
home#slow 280 ms 100.0%
home#slow 280 ms 100.0%
home#slow 280 ms 100.0%