Request Details

Route
/slow GET
Timestamp
Sep 15, 2026 9:58 PM
Duration
176.85 ms
Status
200
Response Size
77 KB
Error
No

Performance Breakdown

Database
1.9% (2 queries)
View Rendering
13.8%
Application Logic
84.3%
Other Operations
0.0%
Total Operations
18
Slowest Operation
176.85 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 367.0ms 734.0ms 1101.0ms 1468.0ms

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
users/index 35 ms 19.8%
layouts/application 31 ms 17.5%
home/index 22 ms 12.4%
layouts/application 11 ms 6.2%
SELECT * FROM users WHERE id = ? 14 ms 7.9%
home#slow 177 ms 100.0%
home#slow 177 ms 100.0%
home#slow 177 ms 100.0%
home#slow 177 ms 100.0%
home/index 23 ms 13.0%
users/index 17 ms 9.6%
home#slow 177 ms 100.0%
home#slow 177 ms 100.0%
home#slow 177 ms 100.0%
users/index 17 ms 9.6%
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... 14 ms 7.9%
home/index 7 ms 4.0%
home/index 39 ms 22.1%