Request Details

Route
/slow GET
Timestamp
Sep 22, 2026 11:18 PM
Duration
521.6 ms
Status
204
Response Size
100 KB
Error
No

Performance Breakdown

Database
2.7% (6 queries)
View Rendering
5.0%
Application Logic
92.4%
Other Operations
0.0%
Total Operations
24
Slowest Operation
521.6 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 1129.5ms 2258.9ms 3388.4ms 4517.8ms

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
users/index 20 ms 3.8%
home/index 6 ms 1.2%
layouts/application 18 ms 3.5%
home#slow 522 ms 100.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 23 ms 4.4%
home#slow 522 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 5 ms 1.0%
home#slow 522 ms 100.0%
home#slow 522 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 8 ms 1.5%
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... 28 ms 5.4%
home#slow 522 ms 100.0%
home#slow 522 ms 100.0%
home/index 40 ms 7.7%
users/index 40 ms 7.7%
home/index 12 ms 2.3%
home#slow 522 ms 100.0%
posts/show 6 ms 1.2%
posts/show 34 ms 6.5%
posts/show 29 ms 5.6%
SELECT * FROM posts WHERE user_id = ? ORDER BY created_at DESC LIMIT ? 25 ms 4.8%
layouts/application 20 ms 3.8%
home#slow 522 ms 100.0%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 31 ms 5.9%