Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 6:32 PM
Duration
334.98 ms
Status
201
Response Size
85 KB
Error
No

Performance Breakdown

Database
5.8% (9 queries)
View Rendering
12.6%
Application Logic
81.6%
Other Operations
0.0%
Total Operations
30
Slowest Operation
334.98 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 615.5ms 1231.0ms 1846.4ms 2461.9ms

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 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... 22 ms 6.6%
home/index 18 ms 5.4%
layouts/application 5 ms 1.5%
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... 16 ms 4.8%
users/index 34 ms 10.1%
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... 18 ms 5.4%
layouts/application 5 ms 1.5%
home#slow 335 ms 100.0%
home#slow 335 ms 100.0%
layouts/application 28 ms 8.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 6 ms 1.8%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 24 ms 7.2%
posts/show 30 ms 9.0%
home#slow 335 ms 100.0%
users/index 19 ms 5.7%
home/index 12 ms 3.6%
users/index 36 ms 10.7%
posts/show 11 ms 3.3%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 12 ms 3.6%
layouts/application 20 ms 6.0%
posts/show 23 ms 6.9%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 2 ms 0.6%
posts/show 34 ms 10.1%
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 > ? 10 ms 3.0%
home#slow 335 ms 100.0%
users/index 13 ms 3.9%
home#slow 335 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... 32 ms 9.6%
home#slow 335 ms 100.0%
posts/show 22 ms 6.6%