Request Details

Route
/slow GET
Timestamp
Sep 18, 2026 6:41 PM
Duration
277.16 ms
Status
200
Response Size
160 KB
Error
No

Performance Breakdown

Database
2.0% (2 queries)
View Rendering
5.6%
Application Logic
92.4%
Other Operations
0.0%
Total Operations
19
Slowest Operation
277.16 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 674.9ms 1349.7ms 2024.6ms 2699.4ms

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
layouts/application 18 ms 6.5%
users/index 29 ms 10.5%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 31 ms 11.2%
home/index 36 ms 13.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 24 ms 8.7%
layouts/application 26 ms 9.4%
layouts/application 11 ms 4.0%
users/index 11 ms 4.0%
home#slow 277 ms 100.0%
home#slow 277 ms 100.0%
home#slow 277 ms 100.0%
layouts/application 14 ms 5.1%
home#slow 277 ms 100.0%
posts/show 5 ms 1.8%
home#slow 277 ms 100.0%
home#slow 277 ms 100.0%
home#slow 277 ms 100.0%
home#slow 277 ms 100.0%
home#slow 277 ms 100.0%