Request Details

Route
/comments POST
Timestamp
Sep 22, 2026 11:37 PM
Duration
36.89 ms
Status
204
Response Size
17 KB
Error
No

Performance Breakdown

Database
17.0% (2 queries)
View Rendering
54.5%
Application Logic
28.5%
Other Operations
0.0%
Total Operations
8
Slowest Operation
39.0 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 64.7ms 129.4ms 194.1ms 258.8ms

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
home/index 39 ms 105.7%
home/index 31 ms 84.0%
comments#create 37 ms 100.0%
SELECT name FROM users 23 ms 62.3%
posts/show 34 ms 92.2%
layouts/application 37 ms 100.3%
comments#create 37 ms 100.0%
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... 21 ms 56.9%