Request Details

Route
/comments POST
Timestamp
Sep 09, 2026 7:42 AM
Duration
28.43 ms
Status
200
Response Size
16 KB
Error
No

Performance Breakdown

Database
24.0% (4 queries)
View Rendering
0.0%
Application Logic
76.0%
Other Operations
0.0%
Total Operations
8
Slowest Operation
28.43 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
Database
0.0ms 37.4ms 74.9ms 112.3ms 149.7ms

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
comments#create 28 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 12 ms 42.2%
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... 5 ms 17.6%
comments#create 28 ms 100.0%
comments#create 28 ms 100.0%
comments#create 28 ms 100.0%
SELECT * FROM users WHERE id = ? 8 ms 28.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 11 ms 38.7%