Request Details

Route
/slow GET
Timestamp
Sep 13, 2026 7:39 AM
Duration
470.45 ms
Status
201
Response Size
85 KB
Error
No

Performance Breakdown

Database
1.6% (8 queries)
View Rendering
1.9%
Application Logic
96.5%
Other Operations
0.0%
Total Operations
28
Slowest Operation
470.45 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 1585.0ms 3169.9ms 4754.9ms 6339.8ms

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#slow 470 ms 100.0%
home/index 5 ms 1.1%
home#slow 470 ms 100.0%
users/index 11 ms 2.3%
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 > ? 18 ms 3.8%
posts/show 11 ms 2.3%
home#slow 470 ms 100.0%
SELECT * FROM users WHERE id = ? 32 ms 6.8%
home#slow 470 ms 100.0%
home/index 13 ms 2.8%
home#slow 470 ms 100.0%
home#slow 470 ms 100.0%
home#slow 470 ms 100.0%
home#slow 470 ms 100.0%
home#slow 470 ms 100.0%
home#slow 470 ms 100.0%
posts/show 10 ms 2.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 1 ms 0.2%
home#slow 470 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 18 ms 3.8%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 1 ms 0.2%
home#slow 470 ms 100.0%
users/index 35 ms 7.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 2 ms 0.4%
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 > ? 24 ms 5.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 5 ms 1.1%
layouts/application 38 ms 8.1%
home#slow 470 ms 100.0%