Request Details

Route
/slow GET
Timestamp
Sep 10, 2026 10:07 PM
Duration
194.39 ms
Status
201
Response Size
170 KB
Error
No

Performance Breakdown

Database
9.2% (8 queries)
View Rendering
9.8%
Application Logic
81.0%
Other Operations
0.0%
Total Operations
24
Slowest Operation
194.39 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 480.0ms 960.0ms 1440.1ms 1920.1ms

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 36 ms 18.5%
posts/show 12 ms 6.2%
home#slow 194 ms 100.0%
layouts/application 31 ms 15.9%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 16 ms 8.2%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 26 ms 13.4%
home#slow 194 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... 16 ms 8.2%
layouts/application 37 ms 19.0%
home#slow 194 ms 100.0%
home/index 13 ms 6.7%
users/index 23 ms 11.8%
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... 35 ms 18.0%
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... 9 ms 4.6%
layouts/application 9 ms 4.6%
users/index 27 ms 13.9%
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... 27 ms 13.9%
home#slow 194 ms 100.0%
home#slow 194 ms 100.0%
home#slow 194 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... 17 ms 8.7%
home#slow 194 ms 100.0%
home#slow 194 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 31 ms 15.9%