Request Details

Route
/api/v1/users GET
Timestamp
Sep 10, 2026 6:42 AM
Duration
49.15 ms
Status
500
Response Size
1.3 KB
Error
Yes

Performance Breakdown

Database
24.2% (2 queries)
View Rendering
34.0%
Application Logic
41.8%
Other Operations
0.0%
Total Operations
7
Slowest Operation
49.15 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 58.8ms 117.7ms 176.5ms 235.3ms

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
api/v1/users#index 49 ms 100.0%
users/index 24 ms 48.8%
posts/show 26 ms 52.9%
home/index 30 ms 61.0%
api/v1/users#index 49 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... 35 ms 71.2%
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... 22 ms 44.8%