Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 1:54 PM
Duration
183.48 ms
Status
200
Response Size
180 KB
Error
No

Performance Breakdown

Database
5.0% (6 queries)
View Rendering
4.5%
Application Logic
90.5%
Other Operations
0.0%
Total Operations
18
Slowest Operation
183.48 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 405.5ms 810.9ms 1216.4ms 1621.8ms

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 183 ms 100.0%
layouts/application 16 ms 8.7%
home#slow 183 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 10 ms 5.5%
home/index 15 ms 8.2%
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... 11 ms 6.0%
layouts/application 6 ms 3.3%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 19 ms 10.4%
home#slow 183 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... 7 ms 3.8%
SELECT * FROM users WHERE id = ? 32 ms 17.4%
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... 2 ms 1.1%
home/index 36 ms 19.6%
home#slow 183 ms 100.0%
home#slow 183 ms 100.0%
home#slow 183 ms 100.0%
home#slow 183 ms 100.0%
home#slow 183 ms 100.0%