Request Details

Route
/slow GET
Timestamp
Sep 16, 2026 11:51 PM
Duration
425.96 ms
Status
204
Response Size
69 KB
Error
No

Performance Breakdown

Database
3.1% (7 queries)
View Rendering
6.7%
Application Logic
90.2%
Other Operations
0.0%
Total Operations
24
Slowest Operation
425.96 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 944.7ms 1889.3ms 2834.0ms 3778.7ms

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
layouts/application 39 ms 9.2%
home/index 19 ms 4.5%
home/index 38 ms 8.9%
home#slow 426 ms 100.0%
home#slow 426 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... 3 ms 0.7%
UPDATE posts SET title = ?, content = ?, updated_at = ? WHERE id = ? 19 ms 4.5%
home#slow 426 ms 100.0%
posts/show 21 ms 4.9%
home#slow 426 ms 100.0%
DELETE FROM posts WHERE id = ? 13 ms 3.1%
home/index 19 ms 4.5%
home#slow 426 ms 100.0%
posts/show 26 ms 6.1%
layouts/application 25 ms 5.9%
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 > ? 18 ms 4.2%
home#slow 426 ms 100.0%
home/index 26 ms 6.1%
home#slow 426 ms 100.0%
posts/show 40 ms 9.4%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 15 ms 3.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 18 ms 4.2%
home#slow 426 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 32 ms 7.5%