View All Products
Compute
Storage
Networking
Databases
Services
Developer Tools
Industries
Pricing
Community
Engage With Us
Community ▶ Questions ▶ High I/O After Migration
Log in to Ask a Question

High I/O After Migration

performance

I was recently migrated from UML to Xen and since then, I have been getting I/O rate threshold e-mails that indicate about a 15x increase in I/O. It's not log rotation. Has anyone else seen this?

4 Replies

What's your current average IO? It might be that your threshold is too low.

@hybinet:

What's your current average IO? It might be that your threshold is too low.

I had the threshold set at 250 and would rarely get alerts above that. Now I get alerts that it is around 1600. This may or may not be a concern, but it is directly related to the migration.

I forget the exact details (it has been awhile), but UML and Xen do use different units for I/O measurement. I want to say UML used operations/second while Xen uses bytes/second, but don't quote me on that. A factor of 10 difference is typical.

IIRC, newly deployed Xen linodes these days have the I/O threshold set to 2000 by default. So according to Xen standards, 1600 might be just fine. Just a guess.

Reply

Please enter an answer
Tips:

You can mention users to notify them: @username

You can use Markdown to format your question. For more examples see the Markdown Cheatsheet.

> I’m a blockquote.

I’m a blockquote.

[I'm a link] (https://www.google.com)

I'm a link

**I am bold** I am bold

*I am italicized* I am italicized

Log in to Reply
Community Code of Conduct