Request Details

Route
/slow GET
Timestamp
Sep 11, 2026 6:42 AM
Duration
313.29 ms
Status
201
Response Size
46 KB
Error
No

Performance Breakdown

Database
3.7% (8 queries)
View Rendering
4.7%
Application Logic
91.7%
Other Operations
0.0%
Total Operations
25
Slowest Operation
313.29 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 854.5ms 1709.0ms 2563.5ms 3417.9ms

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 313 ms 100.0%
home/index 24 ms 7.7%
home#slow 313 ms 100.0%
home#slow 313 ms 100.0%
SELECT id, name FROM users WHERE email = ? 27 ms 8.6%
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... 1 ms 0.3%
home#slow 313 ms 100.0%
home#slow 313 ms 100.0%
users/index 35 ms 11.2%
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 > ? 3 ms 1.0%
SELECT name FROM users 27 ms 8.6%
SELECT * FROM posts WHERE title LIKE ? AND content LIKE ? AND LOWER(title) LIKE ? AND UPPER(content) LIKE ? 9 ms 2.9%
home/index 26 ms 8.3%
home#slow 313 ms 100.0%
home#slow 313 ms 100.0%
home#slow 313 ms 100.0%
users/index 30 ms 9.6%
home#slow 313 ms 100.0%
SELECT * FROM posts WHERE created_at > ? 24 ms 7.7%
posts/show 28 ms 8.9%
layouts/application 8 ms 2.6%
users/index 8 ms 2.6%
home#slow 313 ms 100.0%
SELECT id, name, email FROM users WHERE id = ? 22 ms 7.0%
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... 13 ms 4.1%