Request Details

Route
/comments POST
Timestamp
Sep 09, 2026 9:11 AM
Duration
27.69 ms
Status
201
Response Size
10 KB
Error
No

Performance Breakdown

Database
51.5% (3 queries)
View Rendering
24.0%
Application Logic
24.6%
Other Operations
0.0%
Total Operations
6
Slowest Operation
30.0 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 28.2ms 56.3ms 84.5ms 112.7ms

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
home/index 8 ms 28.9%
SELECT id, name, email FROM users WHERE id = ? 30 ms 108.3%
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... 3 ms 10.8%
comments#create 28 ms 100.0%
home/index 19 ms 68.6%
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... 25 ms 90.3%