Request Details

Route
/slow GET
Timestamp
Sep 13, 2026 7:27 PM
Duration
215.73 ms
Status
201
Response Size
140 KB
Error
No

Performance Breakdown

Database
4.8% (9 queries)
View Rendering
5.8%
Application Logic
89.4%
Other Operations
0.0%
Total Operations
25
Slowest Operation
215.73 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 603.1ms 1206.1ms 1809.2ms 2412.3ms

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 users WHERE id = ? 1 ms 0.5%
home#slow 216 ms 100.0%
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... 29 ms 13.4%
home#slow 216 ms 100.0%
posts/show 24 ms 11.1%
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... 16 ms 7.4%
home#slow 216 ms 100.0%
layouts/application 24 ms 11.1%
layouts/application 27 ms 12.5%
home#slow 216 ms 100.0%
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... 14 ms 6.5%
home#slow 216 ms 100.0%
posts/show 25 ms 11.6%
home#slow 216 ms 100.0%
SELECT * FROM users WHERE id = ? 3 ms 1.4%
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... 4 ms 1.9%
SELECT name FROM users 2 ms 0.9%
layouts/application 20 ms 9.3%
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... 25 ms 11.6%
home#slow 216 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 21 ms 9.7%
layouts/application 20 ms 9.3%
home#slow 216 ms 100.0%
home#slow 216 ms 100.0%
home#slow 216 ms 100.0%