Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 10:39 PM
Duration
404.66 ms
Status
201
Response Size
58 KB
Error
No

Performance Breakdown

Database
2.8% (8 queries)
View Rendering
7.1%
Application Logic
90.2%
Other Operations
0.0%
Total Operations
27
Slowest Operation
404.66 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 897.6ms 1795.1ms 2692.7ms 3590.3ms

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 405 ms 100.0%
home#slow 405 ms 100.0%
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... 28 ms 6.9%
home#slow 405 ms 100.0%
posts/show 17 ms 4.2%
home#slow 405 ms 100.0%
posts/show 10 ms 2.5%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 3 ms 0.7%
home#slow 405 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 > ? 2 ms 0.5%
layouts/application 38 ms 9.4%
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... 23 ms 5.7%
posts/show 25 ms 6.2%
home/index 33 ms 8.2%
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... 23 ms 5.7%
SELECT name FROM users 2 ms 0.5%
users/index 23 ms 5.7%
layouts/application 26 ms 6.4%
home#slow 405 ms 100.0%
posts/show 29 ms 7.2%
home#slow 405 ms 100.0%
home#slow 405 ms 100.0%
layouts/application 5 ms 1.2%
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... 16 ms 4.0%
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... 2 ms 0.5%
home/index 18 ms 4.4%
home/index 30 ms 7.4%