Request Details

Route
/slow GET
Timestamp
Sep 13, 2026 10:01 AM
Duration
237.34 ms
Status
200
Response Size
150 KB
Error
No

Performance Breakdown

Database
6.7% (6 queries)
View Rendering
12.1%
Application Logic
81.3%
Other Operations
0.0%
Total Operations
16
Slowest Operation
237.34 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 292.1ms 584.2ms 876.3ms 1168.3ms

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 237 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 2 ms 0.8%
home#slow 237 ms 100.0%
SELECT * FROM users WHERE id = ? 5 ms 2.1%
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... 24 ms 10.1%
DELETE FROM comments WHERE created_at < ? 20 ms 8.4%
layouts/application 6 ms 2.5%
home/index 23 ms 9.7%
posts/show 32 ms 13.5%
home#slow 237 ms 100.0%
posts/show 30 ms 12.6%
home#slow 237 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 25 ms 10.5%
posts/show 17 ms 7.2%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 2 ms 0.8%
posts/show 33 ms 13.9%