Request Details

Route
/slow GET
Timestamp
Sep 23, 2026 2:30 AM
Duration
347.67 ms
Status
204
Response Size
43 KB
Error
No

Performance Breakdown

Database
1.7% (5 queries)
View Rendering
3.7%
Application Logic
94.6%
Other Operations
0.0%
Total Operations
18
Slowest Operation
347.67 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 735.1ms 1470.2ms 2205.3ms 2940.4ms

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 348 ms 100.0%
home#slow 348 ms 100.0%
home/index 8 ms 2.3%
SELECT * FROM posts WHERE created_at > ? 12 ms 3.5%
layouts/application 20 ms 5.8%
home#slow 348 ms 100.0%
home#slow 348 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... 1 ms 0.3%
SELECT DISTINCT users.*, posts.*, comments.* FROM users, posts, comments WHERE users.id = posts.user_id AND posts.id = comments.post_id AND users.created_at > ? AND posts.created_at > ? AND comments.created_at > ? 12 ms 3.5%
home#slow 348 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 19 ms 5.5%
users/index 6 ms 1.7%
home#slow 348 ms 100.0%
home#slow 348 ms 100.0%
layouts/application 40 ms 11.5%
home/index 35 ms 10.1%
home#slow 348 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 6 ms 1.7%