Request Details

Route
/slow GET
Timestamp
Sep 11, 2026 5:29 PM
Duration
270.76 ms
Status
204
Response Size
140 KB
Error
No

Performance Breakdown

Database
7.6% (5 queries)
View Rendering
13.7%
Application Logic
78.7%
Other Operations
0.0%
Total Operations
16
Slowest Operation
270.76 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 344.0ms 688.0ms 1032.0ms 1376.0ms

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/index 11 ms 4.1%
users/index 29 ms 10.7%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 27 ms 10.0%
home#slow 271 ms 100.0%
SELECT * FROM users WHERE id = ? 11 ms 4.1%
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... 16 ms 5.9%
layouts/application 34 ms 12.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 30 ms 11.1%
home#slow 271 ms 100.0%
users/index 27 ms 10.0%
home#slow 271 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 21 ms 7.8%
posts/show 21 ms 7.8%
posts/show 36 ms 13.3%
users/index 30 ms 11.1%
home#slow 271 ms 100.0%