Request Details

Route
/slow GET
Timestamp
Sep 14, 2026 9:17 AM
Duration
339.26 ms
Status
204
Response Size
80 KB
Error
No

Performance Breakdown

Database
3.7% (6 queries)
View Rendering
3.2%
Application Logic
93.1%
Other Operations
0.0%
Total Operations
21
Slowest Operation
339.26 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 819.6ms 1639.2ms 2458.7ms 3278.3ms

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 comments WHERE post_id = ? ORDER BY created_at DESC LIMIT ? 5 ms 1.5%
home/index 14 ms 4.1%
home#slow 339 ms 100.0%
posts/show 21 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... 23 ms 6.8%
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 > ? 11 ms 3.2%
home#slow 339 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 28 ms 8.3%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 32 ms 9.4%
SELECT * FROM posts WHERE created_at > ? 22 ms 6.5%
layouts/application 8 ms 2.4%
home#slow 339 ms 100.0%
home#slow 339 ms 100.0%
home#slow 339 ms 100.0%
home/index 26 ms 7.7%
home#slow 339 ms 100.0%
posts/show 6 ms 1.8%
home#slow 339 ms 100.0%
home#slow 339 ms 100.0%
home#slow 339 ms 100.0%
users/index 29 ms 8.5%