Request Details

Route
/comments POST
Timestamp
Sep 12, 2026 5:39 AM
Duration
16.49 ms
Status
200
Response Size
11 KB
Error
No

Performance Breakdown

Database
23.2% (2 queries)
View Rendering
34.2%
Application Logic
42.6%
Other Operations
0.0%
Total Operations
8
Slowest Operation
32.0 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 38.7ms 77.5ms 116.2ms 155.0ms

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
comments#create 16 ms 100.0%
posts/show 32 ms 194.0%
comments#create 16 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 14 ms 84.9%
comments#create 16 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 133.4%
comments#create 16 ms 100.0%
posts/show 21 ms 127.3%