Request Details

Route
/slow GET
Timestamp
Sep 12, 2026 3:24 PM
Duration
297.29 ms
Status
204
Response Size
120 KB
Error
No

Performance Breakdown

Database
4.1% (8 queries)
View Rendering
5.3%
Application Logic
90.6%
Other Operations
0.0%
Total Operations
23
Slowest Operation
297.29 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 656.3ms 1312.7ms 1969.0ms 2625.3ms

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
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 10 ms 3.4%
layouts/application 19 ms 6.4%
layouts/application 5 ms 1.7%
SELECT id, name, email FROM users WHERE id = ? 14 ms 4.7%
SELECT name FROM users 3 ms 1.0%
home#slow 297 ms 100.0%
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... 20 ms 6.7%
DELETE FROM posts WHERE id = ? 5 ms 1.7%
home#slow 297 ms 100.0%
users/index 34 ms 11.4%
posts/show 21 ms 7.1%
layouts/application 14 ms 4.7%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 25 ms 8.4%
home#slow 297 ms 100.0%
home#slow 297 ms 100.0%
home#slow 297 ms 100.0%
posts/show 22 ms 7.4%
SELECT users.* FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id WHERE users.active = ? AND posts.published = ? AND comments.approved = ? OR users.created_at > ? AND posts.created_at > ? AND commen... 2 ms 0.7%
home#slow 297 ms 100.0%
home/index 25 ms 8.4%
home#slow 297 ms 100.0%
home#slow 297 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 28 ms 9.4%