Request Details

Route
/slow GET
Timestamp
Sep 13, 2026 7:08 PM
Duration
239.28 ms
Status
204
Response Size
140 KB
Error
No

Performance Breakdown

Database
2.4% (6 queries)
View Rendering
4.6%
Application Logic
92.9%
Other Operations
0.0%
Total Operations
28
Slowest Operation
239.28 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 965.5ms 1931.1ms 2896.6ms 3862.2ms

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 239 ms 100.0%
home#slow 239 ms 100.0%
users/index 32 ms 13.4%
home#slow 239 ms 100.0%
home#slow 239 ms 100.0%
home#slow 239 ms 100.0%
users/index 21 ms 8.8%
home#slow 239 ms 100.0%
SELECT * FROM users WHERE id = ? 17 ms 7.1%
home#slow 239 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 5 ms 2.1%
layouts/application 27 ms 11.3%
home#slow 239 ms 100.0%
home#slow 239 ms 100.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 8 ms 3.3%
home#slow 239 ms 100.0%
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 7.9%
users/index 24 ms 10.0%
SELECT name FROM users 11 ms 4.6%
home#slow 239 ms 100.0%
home/index 16 ms 6.7%
home#slow 239 ms 100.0%
home#slow 239 ms 100.0%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 34 ms 14.2%
home#slow 239 ms 100.0%
home/index 35 ms 14.6%
home#slow 239 ms 100.0%
users/index 24 ms 10.0%