Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 5:10 PM
Duration
322.84 ms
Status
201
Response Size
53 KB
Error
No

Performance Breakdown

Database
2.1% (3 queries)
View Rendering
6.6%
Application Logic
91.4%
Other Operations
0.0%
Total Operations
15
Slowest Operation
322.84 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 530.0ms 1060.0ms 1590.0ms 2120.0ms

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 323 ms 100.0%
home#slow 323 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 1 ms 0.3%
posts/show 39 ms 12.1%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 19 ms 5.9%
home#slow 323 ms 100.0%
home/index 8 ms 2.5%
home#slow 323 ms 100.0%
layouts/application 18 ms 5.6%
SELECT * FROM users WHERE id = ? 24 ms 7.4%
home/index 8 ms 2.5%
posts/show 29 ms 9.0%
home#slow 323 ms 100.0%
posts/show 37 ms 11.5%
home#slow 323 ms 100.0%