Request Details

Route
/slow GET
Timestamp
Sep 14, 2026 9:38 AM
Duration
222.56 ms
Status
201
Response Size
87 KB
Error
No

Performance Breakdown

Database
10.0% (10 queries)
View Rendering
10.2%
Application Logic
79.8%
Other Operations
0.0%
Total Operations
29
Slowest Operation
222.56 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 627.5ms 1255.0ms 1882.5ms 2510.0ms

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 223 ms 100.0%
SELECT * FROM users WHERE id = ? 26 ms 11.7%
home/index 26 ms 11.7%
posts/show 34 ms 15.3%
SELECT * FROM users WHERE id = ? 19 ms 8.5%
home#slow 223 ms 100.0%
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 > ? 31 ms 13.9%
layouts/application 15 ms 6.7%
home/index 16 ms 7.2%
home/index 39 ms 17.5%
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... 34 ms 15.3%
home#slow 223 ms 100.0%
home#slow 223 ms 100.0%
posts/show 40 ms 18.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 34 ms 15.3%
home/index 27 ms 12.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 32 ms 14.4%
home/index 32 ms 14.4%
home#slow 223 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 1 ms 0.4%
home#slow 223 ms 100.0%
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 > ? 34 ms 15.3%
posts/show 7 ms 3.1%
SELECT id, name FROM users WHERE email = ? 26 ms 11.7%
home#slow 223 ms 100.0%
SELECT * FROM users WHERE id = ? 14 ms 6.3%
home#slow 223 ms 100.0%
home#slow 223 ms 100.0%
users/index 20 ms 9.0%