Request Details

Route
/slow GET
Timestamp
Sep 09, 2026 5:06 PM
Duration
360.39 ms
Status
204
Response Size
190 KB
Error
No

Performance Breakdown

Database
5.4% (10 queries)
View Rendering
9.3%
Application Logic
85.2%
Other Operations
0.0%
Total Operations
30
Slowest Operation
360.39 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 845.5ms 1691.0ms 2536.6ms 3382.1ms

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 = ? 5 ms 1.4%
layouts/application 14 ms 3.9%
layouts/application 38 ms 10.5%
home/index 35 ms 9.7%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 32 ms 8.9%
layouts/application 36 ms 10.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 5.3%
SELECT id, name FROM users WHERE email = ? 5 ms 1.4%
home#slow 360 ms 100.0%
home/index 33 ms 9.2%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 12 ms 3.3%
users/index 22 ms 6.1%
home#slow 360 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... 22 ms 6.1%
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... 26 ms 7.2%
layouts/application 30 ms 8.3%
SELECT name FROM users 29 ms 8.0%
home#slow 360 ms 100.0%
users/index 19 ms 5.3%
home#slow 360 ms 100.0%
home/index 35 ms 9.7%
posts/show 27 ms 7.5%
home#slow 360 ms 100.0%
posts/show 10 ms 2.8%
home#slow 360 ms 100.0%
layouts/application 17 ms 4.7%
home#slow 360 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... 4 ms 1.1%
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... 29 ms 8.0%
home#slow 360 ms 100.0%