Request Details

Route
/slow GET
Timestamp
Sep 12, 2026 6:16 PM
Duration
310.07 ms
Status
200
Response Size
170 KB
Error
No

Performance Breakdown

Database
1.3% (3 queries)
View Rendering
5.9%
Application Logic
92.7%
Other Operations
0.0%
Total Operations
19
Slowest Operation
310.07 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 668.6ms 1337.3ms 2005.9ms 2674.5ms

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 21 ms 6.8%
home#slow 310 ms 100.0%
home#slow 310 ms 100.0%
home#slow 310 ms 100.0%
home#slow 310 ms 100.0%
home#slow 310 ms 100.0%
users/index 11 ms 3.5%
home/index 25 ms 8.1%
SELECT id, name, email FROM users WHERE id = ? 16 ms 5.2%
home#slow 310 ms 100.0%
posts/show 29 ms 9.4%
home#slow 310 ms 100.0%
home#slow 310 ms 100.0%
layouts/application 5 ms 1.6%
posts/show 38 ms 12.3%
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 > ? 13 ms 4.2%
home/index 14 ms 4.5%
users/index 15 ms 4.8%
SELECT * FROM posts WHERE created_at > ? 7 ms 2.3%