Request Details

Route
/sign_in GET|POST
Timestamp
Sep 22, 2026 1:39 PM
Duration
58.49 ms
Status
201
Response Size
4 KB
Error
No

Performance Breakdown

Database
8.7% (2 queries)
View Rendering
40.2%
Application Logic
51.1%
Other Operations
0.0%
Total Operations
8
Slowest Operation
58.49 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 57.2ms 114.5ms 171.7ms 229.0ms

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
layouts/application 33 ms 56.4%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 16 ms 27.4%
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... 4 ms 6.8%
layouts/application 20 ms 34.2%
home/index 24 ms 41.0%
sessions#new 58 ms 100.0%
sessions#new 58 ms 100.0%
users/index 15 ms 25.6%