Request Details

Route
/slow GET
Timestamp
Sep 09, 2026 6:22 AM
Duration
157.52 ms
Status
201
Response Size
150 KB
Error
No

Performance Breakdown

Database
6.9% (6 queries)
View Rendering
10.4%
Application Logic
82.7%
Other Operations
0.0%
Total Operations
16
Slowest Operation
157.52 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 238.2ms 476.3ms 714.5ms 952.6ms

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
users/index 27 ms 17.1%
home#slow 158 ms 100.0%
home#slow 158 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 11 ms 7.0%
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 > ? 2 ms 1.3%
layouts/application 12 ms 7.6%
home/index 14 ms 8.9%
SELECT * FROM posts WHERE created_at > ? 10 ms 6.3%
users/index 32 ms 20.3%
home#slow 158 ms 100.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 20 ms 12.7%
home#slow 158 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 21 ms 13.3%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 2 ms 1.3%
posts/show 14 ms 8.9%
home#slow 158 ms 100.0%