Request Details

Route
/slow GET
Timestamp
Sep 12, 2026 5:39 AM
Duration
278.35 ms
Status
200
Response Size
160 KB
Error
No

Performance Breakdown

Database
9.3% (10 queries)
View Rendering
8.6%
Application Logic
82.1%
Other Operations
0.0%
Total Operations
27
Slowest Operation
278.35 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 593.6ms 1187.2ms 1780.8ms 2374.5ms

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
layouts/application 21 ms 7.5%
home#slow 278 ms 100.0%
home#slow 278 ms 100.0%
users/index 13 ms 4.7%
SELECT users.*, posts.*, comments.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, AVG(posts.view_count) as avg_views, MAX(comments.created_at) as latest_comment FROM users LEFT JOIN posts ON users.id = posts.use... 26 ms 9.3%
SELECT * FROM users WHERE id = ? 13 ms 4.7%
home/index 30 ms 10.8%
home#slow 278 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 26 ms 9.3%
users/index 11 ms 4.0%
home/index 15 ms 5.4%
home#slow 278 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 21 ms 7.5%
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... 17 ms 6.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 33 ms 11.9%
home#slow 278 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 10.4%
posts/show 20 ms 7.2%
home/index 8 ms 2.9%
layouts/application 9 ms 3.2%
SELECT name FROM users 18 ms 6.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 35 ms 12.6%
layouts/application 37 ms 13.3%
posts/show 40 ms 14.4%
home#slow 278 ms 100.0%
SELECT name FROM users 4 ms 1.4%
home#slow 278 ms 100.0%