Request Details

Route
/slow GET
Timestamp
Sep 16, 2026 6:23 PM
Duration
330.07 ms
Status
201
Response Size
150 KB
Error
No

Performance Breakdown

Database
3.3% (3 queries)
View Rendering
2.6%
Application Logic
94.1%
Other Operations
0.0%
Total Operations
15
Slowest Operation
330.07 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 614.1ms 1228.3ms 1842.4ms 2456.5ms

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 330 ms 100.0%
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... 30 ms 9.1%
home/index 12 ms 3.6%
home#slow 330 ms 100.0%
users/index 22 ms 6.7%
home#slow 330 ms 100.0%
layouts/application 12 ms 3.6%
SELECT id, name FROM users WHERE email = ? 33 ms 10.0%
home/index 6 ms 1.8%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 18 ms 5.5%
home#slow 330 ms 100.0%
home/index 13 ms 3.9%
home#slow 330 ms 100.0%
home#slow 330 ms 100.0%
home#slow 330 ms 100.0%