Request Details

Route
/sign_in GET|POST
Timestamp
Sep 22, 2026 6:53 PM
Duration
52.88 ms
Status
204
Response Size
9.4 KB
Error
No

Performance Breakdown

Database
2.5% (2 queries)
View Rendering
22.1%
Application Logic
75.4%
Other Operations
0.0%
Total Operations
8
Slowest Operation
52.88 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 70.1ms 140.3ms 210.4ms 280.5ms

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
layouts/application 38 ms 71.9%
sessions#new 53 ms 100.0%
sessions#new 53 ms 100.0%
sessions#new 53 ms 100.0%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 3 ms 5.7%
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... 4 ms 7.6%
sessions#new 53 ms 100.0%
layouts/application 24 ms 45.4%