Request Details

Route
/slow GET
Timestamp
Sep 21, 2026 6:32 AM
Duration
322.71 ms
Status
204
Response Size
87 KB
Error
No

Performance Breakdown

Database
2.3% (5 queries)
View Rendering
3.9%
Application Logic
93.7%
Other Operations
0.0%
Total Operations
28
Slowest Operation
322.71 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 1205.3ms 2410.5ms 3615.8ms 4821.0ms

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 323 ms 100.0%
home/index 8 ms 2.5%
users/index 19 ms 5.9%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 29 ms 9.0%
home#slow 323 ms 100.0%
users/index 22 ms 6.8%
SELECT name FROM users 31 ms 9.6%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 31 ms 9.6%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 5 ms 1.5%
home/index 9 ms 2.8%
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... 17 ms 5.3%
home/index 21 ms 6.5%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%
users/index 37 ms 11.5%
users/index 26 ms 8.1%
posts/show 40 ms 12.4%
posts/show 8 ms 2.5%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%
home#slow 323 ms 100.0%