Request Details

Route
/slow GET
Timestamp
Sep 19, 2026 7:39 PM
Duration
350.79 ms
Status
204
Response Size
89 KB
Error
No

Performance Breakdown

Database
5.4% (8 queries)
View Rendering
5.6%
Application Logic
88.9%
Other Operations
0.0%
Total Operations
24
Slowest Operation
350.79 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 690.4ms 1380.8ms 2071.1ms 2761.5ms

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 351 ms 100.0%
home/index 29 ms 8.3%
posts/show 18 ms 5.1%
posts/show 17 ms 4.8%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 2 ms 0.6%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 1 ms 0.3%
home#slow 351 ms 100.0%
home#slow 351 ms 100.0%
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 > ? 25 ms 7.1%
home#slow 351 ms 100.0%
home/index 25 ms 7.1%
layouts/application 8 ms 2.3%
SELECT name FROM users 4 ms 1.1%
SELECT name FROM users 32 ms 9.1%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 31 ms 8.8%
home#slow 351 ms 100.0%
posts/show 23 ms 6.6%
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 > ? 31 ms 8.8%
home#slow 351 ms 100.0%
posts/show 16 ms 4.6%
users/index 13 ms 3.7%
SELECT users.*, COUNT(DISTINCT posts.id) as post_count, COUNT(DISTINCT comments.id) as comment_count, SUM(posts.view_count) as total_views, AVG(posts.view_count) as avg_views, MIN(posts.created_at) as first_post, MAX(posts.created_at) as latest_post FR... 24 ms 6.8%
home#slow 351 ms 100.0%
posts/show 7 ms 2.0%