Request Details

Route
/comments POST
Timestamp
Sep 21, 2026 9:01 PM
Duration
39.33 ms
Status
200
Response Size
11 KB
Error
No

Performance Breakdown

Database
17.1% (2 queries)
View Rendering
58.1%
Application Logic
24.8%
Other Operations
0.0%
Total Operations
8
Slowest Operation
39.33 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 39.6ms 79.2ms 118.7ms 158.3ms

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
users/index 29 ms 73.7%
SELECT * FROM posts WHERE created_at > ? 25 ms 63.6%
posts/show 7 ms 17.8%
posts/show 20 ms 50.9%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 2 ms 5.1%
comments#create 39 ms 100.0%
users/index 16 ms 40.7%
users/index 20 ms 50.9%