Request Details

Route
/slow GET
Timestamp
Sep 14, 2026 9:40 AM
Duration
496.86 ms
Status
200
Response Size
82 KB
Error
No

Performance Breakdown

Database
6.6% (11 queries)
View Rendering
2.7%
Application Logic
90.7%
Other Operations
0.0%
Total Operations
19
Slowest Operation
496.86 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 684.6ms 1369.2ms 2053.7ms 2738.3ms

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
home#slow 497 ms 100.0%
SELECT posts.* FROM posts WHERE title LIKE ? OR content LIKE ? 16 ms 3.2%
SELECT id, name, email FROM users WHERE id = ? 2 ms 0.4%
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... 19 ms 3.8%
home/index 8 ms 1.6%
home#slow 497 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... 1 ms 0.2%
SELECT name FROM users 27 ms 5.4%
home#slow 497 ms 100.0%
home#slow 497 ms 100.0%
SELECT id, name FROM users WHERE email = ? 3 ms 0.6%
SELECT * FROM users WHERE id = ? 29 ms 5.8%
SELECT * FROM (SELECT users.id, users.name, users.email, COUNT(posts.id) as post_count FROM users LEFT JOIN posts ON users.id = posts.user_id WHERE users.active = ? GROUP BY users.id) as user_posts JOIN (SELECT user_id, COUNT(*) as comment_count FROM c... 21 ms 4.2%
layouts/application 31 ms 6.2%
SELECT * FROM users LEFT JOIN posts ON users.id = posts.user_id LEFT JOIN comments ON posts.id = comments.post_id LEFT JOIN tags ON posts.id = tags.post_id LEFT JOIN categories ON posts.category_id = categories.id WHERE users.active = ? AND posts.publi... 29 ms 5.8%
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... 24 ms 4.8%
home/index 35 ms 7.0%
home#slow 497 ms 100.0%
DELETE FROM comments WHERE created_at < ? 9 ms 1.8%