Request Details

Route
/users POST
Timestamp
Sep 13, 2026 11:48 AM
Duration
20.62 ms
Status
503
Response Size
2.9 KB
Error
Yes

Performance Breakdown

Database
23.0% (2 queries)
View Rendering
52.0%
Application Logic
25.0%
Other Operations
0.0%
Total Operations
8
Slowest Operation
34.0 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 41.3ms 82.6ms 123.9ms 165.2ms

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
layouts/application 10 ms 48.5%
layouts/application 33 ms 160.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 4 ms 19.4%
users#create 21 ms 100.0%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 34 ms 164.9%
layouts/application 31 ms 150.4%
layouts/application 12 ms 58.2%
users#create 21 ms 100.0%