Request Details

Route
/slow GET
Timestamp
Sep 09, 2026 11:26 PM
Duration
1617.73 ms
Status
204
Response Size
71 KB
Error
No

Performance Breakdown

Database
0.4% (2 queries)
View Rendering
2.1%
Application Logic
97.6%
Other Operations
0.0%
Total Operations
17
Slowest Operation
1617.73 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 2486.6ms 4973.2ms 7459.8ms 9946.4ms

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
posts/show 36 ms 2.2%
posts/show 15 ms 0.9%
users/index 28 ms 1.7%
home#slow 1618 ms 100.0%
home#slow 1618 ms 100.0%
posts/show 18 ms 1.1%
posts/show 26 ms 1.6%
posts/show 15 ms 0.9%
SELECT * FROM posts WHERE created_at > ? 34 ms 2.1%
home/index 31 ms 1.9%
home#slow 1618 ms 100.0%
home/index 30 ms 1.9%
home#slow 1618 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 2 ms 0.1%
home#slow 1618 ms 100.0%
users/index 5 ms 0.3%
home#slow 1618 ms 100.0%