Request Details

Route
/slow GET
Timestamp
Sep 11, 2026 2:10 PM
Duration
488.58 ms
Status
201
Response Size
73 KB
Error
No

Performance Breakdown

Database
2.0% (2 queries)
View Rendering
6.4%
Application Logic
91.6%
Other Operations
0.0%
Total Operations
15
Slowest Operation
488.58 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 533.3ms 1066.7ms 1600.0ms 2133.3ms

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
SELECT * FROM posts WHERE created_at > ? 29 ms 5.9%
posts/show 11 ms 2.3%
posts/show 8 ms 1.6%
posts/show 31 ms 6.3%
home/index 33 ms 6.8%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 13 ms 2.7%
home#slow 489 ms 100.0%
home#slow 489 ms 100.0%
layouts/application 5 ms 1.0%
layouts/application 12 ms 2.5%
home#slow 489 ms 100.0%
posts/show 19 ms 3.9%
home/index 6 ms 1.2%
home/index 12 ms 2.5%
home#slow 489 ms 100.0%