Request Details

Route
/slow GET
Timestamp
Sep 10, 2026 8:18 PM
Duration
308.67 ms
Status
204
Response Size
160 KB
Error
No

Performance Breakdown

Database
5.4% (7 queries)
View Rendering
3.5%
Application Logic
91.1%
Other Operations
0.0%
Total Operations
17
Slowest Operation
308.67 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 592.7ms 1185.3ms 1778.0ms 2370.7ms

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
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 3 ms 1.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 31 ms 10.0%
home#slow 309 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... 21 ms 6.8%
home/index 32 ms 10.4%
posts/show 19 ms 6.2%
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... 11 ms 3.6%
home#slow 309 ms 100.0%
home#slow 309 ms 100.0%
home#slow 309 ms 100.0%
home#slow 309 ms 100.0%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 25 ms 8.1%
home#slow 309 ms 100.0%
home#slow 309 ms 100.0%
users/index 32 ms 10.4%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 21 ms 6.8%
SELECT * FROM users WHERE id = ? 15 ms 4.9%