Request Details

Route
/slow GET
Timestamp
Sep 16, 2026 7:30 AM
Duration
577.83 ms
Status
204
Response Size
200 KB
Error
No

Performance Breakdown

Database
2.6% (11 queries)
View Rendering
2.5%
Application Logic
94.9%
Other Operations
0.0%
Total Operations
29
Slowest Operation
577.83 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 1674.3ms 3348.6ms 5022.9ms 6697.2ms

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
users/index 31 ms 5.4%
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... 31 ms 5.4%
home#slow 578 ms 100.0%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 13 ms 2.2%
home#slow 578 ms 100.0%
home#slow 578 ms 100.0%
SELECT * FROM users WHERE id = ? 24 ms 4.2%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 19 ms 3.3%
SELECT * FROM users WHERE id = ? 5 ms 0.9%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 1 ms 0.2%
layouts/application 35 ms 6.1%
layouts/application 26 ms 4.5%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 16 ms 2.8%
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... 1 ms 0.2%
INSERT INTO posts (user_id, title, content, published, created_at, updated_at) VALUES (?, ?, ?, ?, ?, ?) 28 ms 4.8%
home#slow 578 ms 100.0%
home#slow 578 ms 100.0%
posts/show 8 ms 1.4%
home#slow 578 ms 100.0%
SELECT * FROM users WHERE id = ? 34 ms 5.9%
home#slow 578 ms 100.0%
home/index 8 ms 1.4%
home#slow 578 ms 100.0%
home/index 21 ms 3.6%
users/index 39 ms 6.7%
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... 1 ms 0.2%
home#slow 578 ms 100.0%
home#slow 578 ms 100.0%
home#slow 578 ms 100.0%