Request Details

Route
/sign_in GET|POST
Timestamp
Sep 21, 2026 8:57 PM
Duration
59.82 ms
Status
204
Response Size
5.1 KB
Error
No

Performance Breakdown

Database
23.5% (3 queries)
View Rendering
39.5%
Application Logic
37.0%
Other Operations
0.0%
Total Operations
6
Slowest Operation
59.82 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 40.5ms 80.9ms 121.4ms 161.8ms

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
sessions#new 60 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... 4 ms 6.7%
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... 2 ms 3.3%
SELECT name FROM users 32 ms 53.5%
users/index 33 ms 55.2%
layouts/application 31 ms 51.8%