Request Details

Route
/comments POST
Timestamp
Sep 11, 2026 4:18 PM
Duration
16.12 ms
Status
204
Response Size
15 KB
Error
No

Performance Breakdown

Database
39.5% (3 queries)
View Rendering
51.1%
Application Logic
9.4%
Other Operations
0.0%
Total Operations
8
Slowest Operation
36.0 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 43.0ms 86.1ms 129.1ms 172.1ms

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 15 ms 93.0%
comments#create 16 ms 100.0%
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 > ? 31 ms 192.3%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 12 ms 74.4%
SELECT * FROM posts WHERE created_at > ? 25 ms 155.0%
home/index 13 ms 80.6%
layouts/application 24 ms 148.8%
posts/show 36 ms 223.3%