Request Details

Route
/slow GET
Timestamp
Sep 12, 2026 9:30 PM
Duration
164.44 ms
Status
201
Response Size
100 KB
Error
No

Performance Breakdown

Database
6.5% (8 queries)
View Rendering
8.1%
Application Logic
85.3%
Other Operations
0.0%
Total Operations
28
Slowest Operation
164.44 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 626.2ms 1252.4ms 1878.6ms 2504.7ms

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 164 ms 100.0%
home#slow 164 ms 100.0%
users/index 40 ms 24.3%
home/index 22 ms 13.4%
home#slow 164 ms 100.0%
layouts/application 9 ms 5.5%
posts/show 39 ms 23.7%
home#slow 164 ms 100.0%
home/index 31 ms 18.9%
SELECT name FROM users 34 ms 20.7%
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... 1 ms 0.6%
home#slow 164 ms 100.0%
home#slow 164 ms 100.0%
home#slow 164 ms 100.0%
home#slow 164 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... 29 ms 17.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 29 ms 17.6%
home/index 23 ms 14.0%
home#slow 164 ms 100.0%
users/index 40 ms 24.3%
home#slow 164 ms 100.0%
home#slow 164 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... 5 ms 3.0%
home#slow 164 ms 100.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 33 ms 20.1%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 10 ms 6.1%
home#slow 164 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 22 ms 13.4%