Request Details

Route
/slow GET
Timestamp
Sep 13, 2026 10:22 PM
Duration
406.63 ms
Status
201
Response Size
100 KB
Error
No

Performance Breakdown

Database
6.4% (8 queries)
View Rendering
3.9%
Application Logic
89.7%
Other Operations
0.0%
Total Operations
19
Slowest Operation
406.63 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 680.2ms 1360.4ms 2040.6ms 2720.8ms

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 407 ms 100.0%
home#slow 407 ms 100.0%
home#slow 407 ms 100.0%
home#slow 407 ms 100.0%
home/index 29 ms 7.1%
SELECT posts.title, posts.content, users.name FROM posts JOIN users ON posts.user_id = users.id WHERE posts.published = ? 23 ms 5.7%
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... 32 ms 7.9%
home#slow 407 ms 100.0%
SELECT * FROM comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 22 ms 5.4%
SELECT * FROM users WHERE id = ? 3 ms 0.7%
home#slow 407 ms 100.0%
users/index 32 ms 7.9%
posts/show 11 ms 2.7%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 35 ms 8.6%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 23 ms 5.7%
home/index 10 ms 2.5%
SELECT name FROM users 30 ms 7.4%
layouts/application 25 ms 6.1%
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... 6 ms 1.5%