Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 6:44 AM
Duration
353.6 ms
Status
204
Response Size
83 KB
Error
No

Performance Breakdown

Database
2.6% (6 queries)
View Rendering
4.6%
Application Logic
92.8%
Other Operations
0.0%
Total Operations
30
Slowest Operation
353.6 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 1048.4ms 2096.8ms 3145.2ms 4193.6ms

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 354 ms 100.0%
users/index 11 ms 3.1%
layouts/application 10 ms 2.8%
users/index 6 ms 1.7%
home#slow 354 ms 100.0%
home#slow 354 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... 8 ms 2.3%
home#slow 354 ms 100.0%
home/index 27 ms 7.6%
home#slow 354 ms 100.0%
posts/show 12 ms 3.4%
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... 26 ms 7.4%
layouts/application 5 ms 1.4%
home/index 15 ms 4.2%
users/index 21 ms 5.9%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 28 ms 7.9%
posts/show 33 ms 9.3%
home#slow 354 ms 100.0%
home/index 24 ms 6.8%
posts/show 11 ms 3.1%
home#slow 354 ms 100.0%
home#slow 354 ms 100.0%
home#slow 354 ms 100.0%
layouts/application 14 ms 4.0%
home#slow 354 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 27 ms 7.6%
home#slow 354 ms 100.0%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 18 ms 5.1%
SELECT * FROM posts WHERE created_at > ? 2 ms 0.6%
home/index 6 ms 1.7%