Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 1:30 PM
Duration
375.97 ms
Status
201
Response Size
63 KB
Error
No

Performance Breakdown

Database
6.2% (6 queries)
View Rendering
8.7%
Application Logic
85.1%
Other Operations
0.0%
Total Operations
16
Slowest Operation
375.97 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 331.5ms 663.0ms 994.4ms 1325.9ms

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
users/index 40 ms 10.6%
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 4.3%
SELECT * FROM users WHERE id = ? 20 ms 5.3%
users/index 11 ms 2.9%
home/index 5 ms 1.3%
SELECT * FROM users WHERE id = ? 5 ms 1.3%
home#slow 376 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... 10 ms 2.7%
users/index 21 ms 5.6%
users/index 8 ms 2.1%
home#slow 376 ms 100.0%
home#slow 376 ms 100.0%
posts/show 11 ms 2.9%
users/index 20 ms 5.3%
SELECT * FROM posts WHERE created_at > ? 16 ms 4.3%
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... 15 ms 4.0%